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Execution via MSSQL xp_cmdshell Stored Procedure
Identifies execution via MSSQL xp_cmdshell stored procedure. Malicious users may attempt to elevate their privileges by using xp_cmdshell, which is disabled by default, thus, it's important to review the context of it's use.
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Identifies registry modifications related to the Windows Security Support Provider (SSP) configuration. Adversaries may abuse this to establish persistence in an environment.
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An adversary can use the Background Intelligent Transfer Service (BITS) SetNotifyCmdLine method to execute a program that runs after a job finishes transferring data or after a job enters a specified state in order to persist on a system.
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Detects the successful hijack of Microsoft Compatibility Appraiser scheduled task to establish persistence with an integrity level of system.
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Persistence via Update Orchestrator Service Hijack
Oct 11, 2024 · Domain: Endpoint OS: Windows Use Case: Threat Detection Tactic: Persistence Tactic: Privilege Escalation Use Case: Vulnerability Resources: Investigation Guide Data Source: Elastic Endgame Data Source: Elastic Defend Data Source: Microsoft Defender for Endpoint Data Source: Sysmon Data Source: SentinelOne ·Identifies potential hijacking of the Microsoft Update Orchestrator Service to establish persistence with an integrity level of SYSTEM.
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An adversary can use Windows Management Instrumentation (WMI) to install event filters, providers, consumers, and bindings that execute code when a defined event occurs. Adversaries may use the capabilities of WMI to subscribe to an event and execute arbitrary code when that event occurs, providing persistence on a system.
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The Application Shim was created to allow for backward compatibility of software as the operating system codebase changes over time. This Windows functionality has been abused by attackers to stealthily gain persistence and arbitrary code execution in legitimate Windows processes.
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Identifies modification of the Time Provider. Adversaries may establish persistence by registering and enabling a malicious DLL as a time provider. Windows uses the time provider architecture to obtain accurate time stamps from other network devices or clients in the network. Time providers are implemented in the form of a DLL file which resides in the System32 folder. The service W32Time initiates during the startup of Windows and loads w32time.dll.
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Identifies the creation of a suspicious ImagePath value. This could be an indication of an adversary attempting to stealthily persist or escalate privileges through abnormal service creation.
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User Account Creation
Identifies attempts to create new users. This is sometimes done by attackers to increase access or establish persistence on a system or domain.
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Identifies the addition of a Netsh Helper DLL, netsh.exe supports the addition of these DLLs to extend its functionality. Attackers may abuse this mechanism to execute malicious payloads every time the utility is executed, which can be done by administrators or a scheduled task.
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Identifies the use of the Exchange PowerShell cmdlet, Set-CASMailbox, to add a new ActiveSync allowed device. Adversaries may target user email to collect sensitive information.
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Identifies the modification of the Microsoft Office "Office Test" Registry key, a registry location that can be used to specify a DLL which will be executed every time an MS Office application is started. Attackers can abuse this to gain persistence on a compromised host.
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Detects attempts to establish persistence on an endpoint by abusing Microsoft Office add-ins.
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Detects attempts to establish persistence on an endpoint by installing a rogue Microsoft Outlook VBA Template.
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Identifies the creation or modification of a PowerShell profile. PowerShell profile is a script that is executed when PowerShell starts to customize the user environment, which can be abused by attackers to persist in a environment where PowerShell is common.
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Identifies script engines creating files in the Startup folder, or the creation of script files in the Startup folder. Adversaries may abuse this technique to maintain persistence in an environment.
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Windows contains accessibility features that may be launched with a key combination before a user has logged in. An adversary can modify the way these programs are launched to get a command prompt or backdoor without logging in to the system.
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Identifies files written to or modified in the startup folder by commonly abused processes. Adversaries may use this technique to maintain persistence.
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Identifies processes modifying the services registry key directly, instead of through the expected Windows APIs. This could be an indication of an adversary attempting to stealthily persist through abnormal service creation or modification of an existing service.
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Identifies the install of browser extensions. Malicious browser extensions can be installed via app store downloads masquerading as legitimate extensions, social engineering, or by an adversary that has already compromised a system.
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Identifies the creation of a hidden local user account by appending the dollar sign to the account name. This is sometimes done by attackers to increase access to a system and avoid appearing in the results of accounts listing using the net users command.
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The Debugger and SilentProcessExit registry keys can allow an adversary to intercept the execution of files, causing a different process to be executed. This functionality can be abused by an adversary to establish persistence.
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Identifies the installation of custom Application Compatibility Shim databases. This Windows functionality has been abused by attackers to stealthily gain persistence and arbitrary code execution in legitimate Windows processes.
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Identifies suspicious file creations in the startup folder of a remote system. An adversary could abuse this to move laterally by dropping a malicious script or executable that will be executed after a reboot or user logon.
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A job can be used to schedule programs or scripts to be executed at a specified date and time. Adversaries may abuse task scheduling functionality to facilitate initial or recurring execution of malicious code.
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Registry Persistence via AppInit DLL
AppInit DLLs are dynamic-link libraries (DLLs) that are loaded into every process that creates a user interface (loads user32.dll) on Microsoft Windows operating systems. The AppInit DLL mechanism is used to load custom code into user-mode processes, allowing for the customization of the user interface and the behavior of Windows-based applications. Attackers who add those DLLs to the registry locations can execute code with elevated privileges, similar to process injection, and provide a solid and constant persistence on the machine.
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Identifies a remote file copy attempt to a hidden network share. This may indicate lateral movement or data staging activity.
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Suspicious Startup Shell Folder Modification
Identifies suspicious startup shell folder modifications to change the default Startup directory in order to bypass detections monitoring file creation in the Windows Startup folder.
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Unusual Child Process of dns.exe
Oct 11, 2024 · Domain: Endpoint OS: Windows Use Case: Threat Detection Tactic: Lateral Movement Resources: Investigation Guide Data Source: Elastic Endgame Use Case: Vulnerability Data Source: Elastic Defend Data Source: System Data Source: Microsoft Defender for Endpoint Data Source: Sysmon Data Source: SentinelOne ·Identifies an unexpected process spawning from dns.exe, the process responsible for Windows DNS server services, which may indicate activity related to remote code execution or other forms of exploitation.
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Identifies execution from the Remote Desktop Protocol (RDP) shared mountpoint tsclient on the target host. This may indicate a lateral movement attempt.
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Microsoft Exchange Server UM Spawning Suspicious Processes
Oct 11, 2024 · Domain: Endpoint OS: Windows Use Case: Threat Detection Tactic: Initial Access Tactic: Lateral Movement Data Source: Elastic Endgame Use Case: Vulnerability Data Source: Elastic Defend Data Source: System Data Source: Microsoft Defender for Endpoint Data Source: Sysmon Data Source: SentinelOne ·Identifies suspicious processes being spawned by the Microsoft Exchange Server Unified Messaging (UM) service. This activity has been observed exploiting CVE-2021-26857.
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Identifies suspicious processes being spawned by the Microsoft Exchange Server worker process (w3wp). This activity may indicate exploitation activity or access to an existing web shell backdoor.
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Identifies the use of net.exe to mount a WebDav or hidden remote share. This may indicate lateral movement or preparation for data exfiltration.
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Identifies NullSessionPipe registry modifications that specify which pipes can be accessed anonymously. This could be indicative of adversary lateral movement preparation by making the added pipe available to everyone.
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Identifies the modification of the Remote Desktop Protocol (RDP) Shadow registry or the execution of processes indicative of an active RDP shadowing session. An adversary may abuse the RDP Shadowing feature to spy on or control other users active RDP sessions.
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RDP Enabled via Registry
Identifies registry write modifications to enable Remote Desktop Protocol (RDP) access. This could be indicative of adversary lateral movement preparation.
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Identifies suspicious processes being spawned by the ScreenConnect server process (ScreenConnect.Service.exe). This activity may indicate exploitation activity or access to an existing web shell backdoor.
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Identifies a suspicious Windows explorer child process. Explorer.exe can be abused to launch malicious scripts or executables from a trusted parent process.
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Suspicious MS Office Child Process
Oct 11, 2024 · Domain: Endpoint OS: Windows Use Case: Threat Detection Tactic: Initial Access Tactic: Defense Evasion Tactic: Execution Resources: Investigation Guide Data Source: Elastic Endgame Data Source: Elastic Defend Data Source: System Data Source: Microsoft Defender for Endpoint Data Source: Sysmon Data Source: SentinelOne ·Identifies suspicious child processes of frequently targeted Microsoft Office applications (Word, PowerPoint, Excel). These child processes are often launched during exploitation of Office applications or from documents with malicious macros.
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Identifies use of the wbadmin.exe to delete the backup catalog. Ransomware and other malware may do this to prevent system recovery.
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Microsoft Exchange Server UM Writing Suspicious Files
Identifies suspicious files being written by the Microsoft Exchange Server Unified Messaging (UM) service. This activity has been observed exploiting CVE-2021-26858.
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Identifies use of bcdedit.exe to delete boot configuration data. This tactic is sometimes used as by malware or an attacker as a destructive technique.
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Suspicious Execution from INET Cache
Identifies the execution of a process with arguments pointing to the INetCache Folder. Adversaries may deliver malicious content via WININET during initial access.
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Identifies execution of common Microsoft Office applications to launch an Office Add-In from a suspicious path or with an unusual parent process. This may indicate an attempt to get initial access via a malicious phishing MS Office Add-In.
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Identifies suspicious processes being spawned by the JetBrain TeamCity process. This activity could be related to JetBrains remote code execution vulnerabilities.
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Identifies use of vssadmin.exe for shadow copy deletion or resizing on endpoints. This commonly occurs in tandem with ransomware or other destructive attacks.
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Volume Shadow Copy Deletion via PowerShell
Oct 11, 2024 · Domain: Endpoint OS: Windows Use Case: Threat Detection Tactic: Impact Tactic: Execution Resources: Investigation Guide Data Source: Elastic Endgame Data Source: Elastic Defend Data Source: System Data Source: Microsoft Defender for Endpoint Data Source: Sysmon Data Source: SentinelOne ·Identifies the use of the Win32_ShadowCopy class and related cmdlets to achieve shadow copy deletion. This commonly occurs in tandem with ransomware or other destructive attacks.
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Volume Shadow Copy Deletion via WMIC
Oct 11, 2024 · Domain: Endpoint OS: Windows Use Case: Threat Detection Tactic: Impact Tactic: Execution Resources: Investigation Guide Data Source: Elastic Endgame Data Source: Elastic Defend Data Source: System Data Source: Microsoft Defender for Endpoint Data Source: Sysmon Data Source: SentinelOne ·Identifies use of wmic.exe for shadow copy deletion on endpoints. This commonly occurs in tandem with ransomware or other destructive attacks.
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Windows Script Executing PowerShell
Identifies a PowerShell process launched by either cscript.exe or wscript.exe. Observing Windows scripting processes executing a PowerShell script, may be indicative of malicious activity.
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Conhost Spawned By Suspicious Parent Process
Oct 11, 2024 · Domain: Endpoint OS: Windows Use Case: Threat Detection Tactic: Execution Tactic: Defense Evasion Tactic: Privilege Escalation Resources: Investigation Guide Data Source: Elastic Endgame Data Source: Elastic Defend Data Source: Sysmon Data Source: Microsoft Defender for Endpoint Data Source: SentinelOne ·Detects when the Console Window Host (conhost.exe) process is spawned by a suspicious parent process, which could be indicative of code injection.
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Identifies native Windows host and network enumeration commands spawned by the Windows Management Instrumentation Provider Service (WMIPrvSE).
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Execution from Unusual Directory - Command Line
Oct 11, 2024 · Domain: Endpoint OS: Windows Use Case: Threat Detection Tactic: Execution Tactic: Defense Evasion Resources: Investigation Guide Data Source: Elastic Endgame Data Source: Elastic Defend Data Source: System Data Source: Microsoft Defender for Endpoint Data Source: Sysmon Data Source: SentinelOne ·Identifies process execution from suspicious default Windows directories. This may be abused by adversaries to hide malware in trusted paths.
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Identifies the creation, change, or deletion of a DLL module within a Windows SxS local folder. Adversaries may abuse shared modules to execute malicious payloads by instructing the Windows module loader to load DLLs from arbitrary local paths.
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Managed Object Format (MOF) files can be compiled locally or remotely through mofcomp.exe. Attackers may leverage MOF files to build their own namespaces and classes into the Windows Management Instrumentation (WMI) repository, or establish persistence using WMI Event Subscription.
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Compiled HTML files (.chm) are commonly distributed as part of the Microsoft HTML Help system. Adversaries may conceal malicious code in a CHM file and deliver it to a victim for execution. CHM content is loaded by the HTML Help executable program (hh.exe).
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Identifies suspicious command execution (cmd) via Windows Management Instrumentation (WMI) on a remote host. This could be indicative of adversary lateral movement.
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Suspicious PDF Reader Child Process
Oct 11, 2024 · Domain: Endpoint OS: Windows Use Case: Threat Detection Tactic: Execution Tactic: Initial Access Resources: Investigation Guide Data Source: Elastic Endgame Data Source: Elastic Defend Data Source: System Data Source: Microsoft Defender for Endpoint Data Source: Sysmon Data Source: SentinelOne ·Identifies suspicious child processes of PDF reader applications. These child processes are often launched via exploitation of PDF applications or social engineering.
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Identifies suspicious psexec activity which is executing from the psexec service that has been renamed, possibly to evade detection.
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Unusual Execution via Microsoft Common Console File
Identifies the execution of a child process from a Microsoft Common Console file. Adversaries may embed a malicious command in an MSC file in order to trick victims into executing malicious commands.
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This rule detects the Active Directory query tool, AdFind.exe. AdFind has legitimate purposes, but it is frequently leveraged by threat actors to perform post-exploitation Active Directory reconnaissance. The AdFind tool has been observed in Trickbot, Ryuk, Maze, and FIN6 campaigns. For Winlogbeat, this rule requires Sysmon.
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Identifies command shell activity started via RunDLL32, which is commonly abused by attackers to host malicious code.
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Identifies the use of dsquery.exe for domain trust discovery purposes. Adversaries may use this command-line utility to enumerate trust relationships that may be used for Lateral Movement opportunities in Windows multi-domain forest environments.
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Identifies the use of nltest.exe for domain trust discovery purposes. Adversaries may use this command-line utility to enumerate domain trusts and gain insight into trust relationships, as well as the state of Domain Controller (DC) replication in a Microsoft Windows NT Domain.
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Identifies instances of lower privilege accounts enumerating Administrator accounts or groups using built-in Windows tools.
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Windows Component Object Model (COM) is an inter-process communication (IPC) component of the native Windows application programming interface (API) that enables interaction between software objects or executable code. Xwizard can be used to run a COM object created in registry to evade defensive counter measures.
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Detects the usage of gpresult.exe to query group policy objects. Attackers may query group policy objects during the reconnaissance phase after compromising a system to gain a better understanding of the active directory environment and possible methods to escalate privileges or move laterally.
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Identifies use of the Windows file system utility (fsutil.exe) to gather information about attached peripheral devices and components connected to a computer system.
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Detects changes to the registry that indicates the install of a new Windows Subsystem for Linux distribution by name. Adversaries may enable and use WSL for Linux to avoid detection.
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Detects attempts to install or use Kali Linux via Windows Subsystem for Linux. Adversaries may enable and use WSL for Linux to avoid detection.
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Detects attempts to execute a program on the host from the Windows Subsystem for Linux. Adversaries may enable and use WSL for Linux to avoid detection.
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Identifies the execution of a process with a single character process name, differing from the original file name. This is often done by adversaries while staging, executing temporary utilities, or trying to bypass security detections based on the process name.
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Identifies the use of Windows Work Folders to execute a potentially masqueraded control.exe file in the current working directory. Misuse of Windows Work Folders could indicate malicious activity.
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Detects Linux Bash commands from the the Windows Subsystem for Linux. Adversaries may enable and use WSL for Linux to avoid detection.
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Identifies a suspicious child process of the Windows virtual system process, which could indicate code injection.
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Unusual Executable File Creation by a System Critical Process
Identifies an unexpected executable file being created or modified by a Windows system critical process, which may indicate activity related to remote code execution or other forms of exploitation.
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Identifies suspicious creation of Alternate Data Streams on highly targeted files. This is uncommon for legitimate files and sometimes done by adversaries to hide malware.
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Identifies processes running from an Alternate Data Stream. This is uncommon for legitimate processes and sometimes done by adversaries to hide malware.
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Detects attempts to enable the Windows Subsystem for Linux using Microsoft Dism utility. Adversaries may enable and use WSL for Linux to avoid detection.
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Identifies the creation of an Alternate Data Stream (ADS) at a volume root directory, which can indicate the attempt to hide tools and malware, as ADSs created in this directory are not displayed by system utilities.
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Identifies changes to the DNS Global Query Block List (GQBL), a security feature that prevents the resolution of certain DNS names often exploited in attacks like WPAD spoofing. Attackers with certain privileges, such as DNSAdmins, can modify or disable the GQBL, allowing exploitation of hosts running WPAD with default settings for privilege escalation and lateral movement.
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Detects file name patterns generated by the use of Sysinternals SDelete utility to securely delete a file via multiple file overwrite and rename operations.
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Identifies attempts to enable the Windows scheduled tasks AT command via the registry. Attackers may use this method to move laterally or persist locally. The AT command has been deprecated since Windows 8 and Windows Server 2012, but still exists for backwards compatibility.
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Identifies modifications to the registered Subject Interface Package (SIP) providers. SIP providers are used by the Windows cryptographic system to validate file signatures on the system. This may be an attempt to bypass signature validation checks or inject code into critical processes.
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Identifies a SolarWinds binary modifying the start type of a service to be disabled. An adversary may abuse this technique to manipulate relevant security services.
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Suspicious CertUtil Commands
Identifies suspicious commands being used with certutil.exe. CertUtil is a native Windows component which is part of Certificate Services. CertUtil is often abused by attackers to live off the land for stealthier command and control or data exfiltration.
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Identifies a suspicious managed code hosting process which could indicate code injection or other form of suspicious code execution.
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Identifies potential abuse of the Microsoft Diagnostics Troubleshooting Wizard (MSDT) to proxy malicious command or binary execution via malicious process arguments.
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Windows Firewall Disabled via PowerShell
Oct 11, 2024 · Domain: Endpoint OS: Windows Use Case: Threat Detection Tactic: Defense Evasion Tactic: Execution Resources: Investigation Guide Data Source: Elastic Endgame Data Source: Elastic Defend Data Source: System Data Source: Microsoft Defender for Endpoint Data Source: Sysmon Data Source: SentinelOne ·Identifies when the Windows Firewall is disabled using PowerShell cmdlets, which can help attackers evade network constraints, like internet and network lateral communication restrictions.
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Identifies registry write modifications to hide an encoded portable executable. This could be indicative of adversary defense evasion by avoiding the storing of malicious content directly on disk.
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Masquerading can allow an adversary to evade defenses and better blend in with the environment. One way it occurs is when the name or location of a file is manipulated as a means of tricking a user into executing what they think is a benign file type but is actually executable code.
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IIS HTTP Logging Disabled
Identifies when Internet Information Services (IIS) HTTP Logging is disabled on a server. An attacker with IIS server access via a webshell or other mechanism can disable HTTP Logging as an effective anti-forensics measure.
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Identifies when one or more features on Microsoft Defender are disabled. Adversaries may disable or tamper with Microsoft Defender features to evade detection and conceal malicious behavior.
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Microsoft Office Products offer options for users and developers to control the security settings for running and using Macros. Adversaries may abuse these security settings to modify the default behavior of the Office Application to trust future macros and/or disable security warnings, which could increase their chances of establishing persistence.
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Identifies process execution from suspicious default Windows directories. This is sometimes done by adversaries to hide malware in trusted paths.
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Identifies execution from a directory masquerading as the Windows Program Files directories. These paths are trusted and usually host trusted third party programs. An adversary may leverage masquerading, along with low privileges to bypass detections allowlisting those folders.
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Identifies a suspicious AutoIt process execution. Malware written as an AutoIt script tends to rename the AutoIt executable to avoid detection.
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A suspicious Endpoint Security parent process was detected. This may indicate a process hollowing or other form of code injection.
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Suspicious WerFault Child Process
A suspicious WerFault child process was detected, which may indicate an attempt to run via the SilentProcessExit registry key manipulation. Verify process details such as command line, network connections and file writes.
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Identifies unusual instances of Control Panel with suspicious keywords or paths in the process command line value. Adversaries may abuse control.exe to proxy execution of malicious code.
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Enable Host Network Discovery via Netsh
Identifies use of the netsh.exe program to enable host discovery via the network. Attackers can use this command-line tool to weaken the host firewall settings.
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Identifies abuse of the Windows Update Auto Update Client (wuauclt.exe) to load an arbitrary DLL. This behavior is used as a defense evasion technique to blend-in malicious activity with legitimate Windows software.
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An instance of MSBuild, the Microsoft Build Engine, was started by Explorer or the WMI (Windows Management Instrumentation) subsystem. This behavior is unusual and is sometimes used by malicious payloads.
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Microsoft Build Engine Started by an Office Application
Oct 11, 2024 · Domain: Endpoint OS: Windows Use Case: Threat Detection Tactic: Defense Evasion Tactic: Execution Resources: Investigation Guide Data Source: Elastic Endgame Data Source: Elastic Defend Data Source: System Data Source: Microsoft Defender for Endpoint Data Source: Sysmon Data Source: SentinelOne ·An instance of MSBuild, the Microsoft Build Engine, was started by Excel or Word. This is unusual behavior for the Build Engine and could have been caused by an Excel or Word document executing a malicious script payload.
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An instance of MSBuild, the Microsoft Build Engine, was started after being renamed. This is uncommon behavior and may indicate an attempt to run unnoticed or undetected.
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Identifies a Windows trusted program that is known to be vulnerable to DLL Search Order Hijacking starting after being renamed or from a non-standard path. This is uncommon behavior and may indicate an attempt to evade defenses via side-loading a malicious DLL within the memory space of one of those processes.
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Identifies an instance of a Windows trusted program that is known to be vulnerable to DLL Search Order Hijacking starting after being renamed or from a non-standard path. This is uncommon behavior and may indicate an attempt to evade defenses via side loading a malicious DLL within the memory space of one of those processes.
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Remote Desktop Enabled in Windows Firewall by Netsh
Identifies use of the network shell utility (netsh.exe) to enable inbound Remote Desktop Protocol (RDP) connections in the Windows Firewall.
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Identifies executions of .NET compilers with suspicious parent processes, which can indicate an attacker's attempt to compile code after delivery in order to bypass security mechanisms.
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Identifies the creation or modification of a local trusted root certificate in Windows. The install of a malicious root certificate would allow an attacker the ability to masquerade malicious files as valid signed components from any entity (for example, Microsoft). It could also allow an attacker to decrypt SSL traffic.
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Delete Volume USN Journal with Fsutil
Identifies use of the fsutil.exe to delete the volume USNJRNL. This technique is used by attackers to eliminate evidence of files created during post-exploitation activities.
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Disable Windows Event and Security Logs Using Built-in Tools
Identifies attempts to disable EventLog via the logman Windows utility, PowerShell, or auditpol. This is often done by attackers in an attempt to evade detection on a system.
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Disable Windows Firewall Rules via Netsh
Identifies use of the netsh.exe to disable or weaken the local firewall. Attackers will use this command line tool to disable the firewall during troubleshooting or to enable network mobility.
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Disabling Windows Defender Security Settings via PowerShell
Oct 11, 2024 · Domain: Endpoint OS: Windows Use Case: Threat Detection Tactic: Defense Evasion Tactic: Execution Resources: Investigation Guide Data Source: Elastic Endgame Data Source: Elastic Defend Data Source: System Data Source: Microsoft Defender for Endpoint Data Source: Sysmon Data Source: SentinelOne ·Identifies use of the Set-MpPreference PowerShell command to disable or weaken certain Windows Defender settings.
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Identifies when a user enables DNS-over-HTTPS. This can be used to hide internet activity or the process of exfiltrating data. With this enabled, an organization will lose visibility into data such as query type, response, and originating IP, which are used to determine bad actors.
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Identifies the attempt to disable Network-Level Authentication (NLA) via registry modification. Network Level Authentication (NLA) is a feature on Windows that provides an extra layer of security for Remote Desktop (RDP) connections, as it requires users to authenticate before allowing a full RDP session. Attackers can disable NLA to enable persistence methods that require access to the Windows sign-in screen without authenticating, such as Accessibility Features persistence methods, like Sticky Keys.
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Identifies attempts to disable PowerShell Script Block Logging via registry modification. Attackers may disable this logging to conceal their activities in the host and evade detection.
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Identifies modifications to the Windows Defender registry settings to disable the service or set the service to be started manually.
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Windows Defender Exclusions Added via PowerShell
Identifies modifications to the Windows Defender configuration settings using PowerShell to add exclusions at the folder directory or process level.
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Adding Hidden File Attribute via Attrib
Oct 11, 2024 · Domain: Endpoint OS: Windows Use Case: Threat Detection Tactic: Defense Evasion Tactic: Persistence Data Source: Elastic Endgame Resources: Investigation Guide Data Source: Elastic Defend Data Source: System Data Source: Microsoft Defender for Endpoint Data Source: Sysmon Data Source: SentinelOne ·Adversaries can add the 'hidden' attribute to files to hide them from the user in an attempt to evade detection.
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Clearing Windows Console History
Oct 11, 2024 · Domain: Endpoint OS: Windows Use Case: Threat Detection Tactic: Defense Evasion Tactic: Execution Resources: Investigation Guide Data Source: Elastic Endgame Data Source: Elastic Defend Data Source: System Data Source: Microsoft Defender for Endpoint Data Source: Sysmon Data Source: SentinelOne ·Identifies when a user attempts to clear console history. An adversary may clear the command history of a compromised account to conceal the actions undertaken during an intrusion.
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Clearing Windows Event Logs
Identifies attempts to clear or disable Windows event log stores using Windows wevetutil command. This is often done by attackers in an attempt to evade detection or destroy forensic evidence on a system.
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Code Signing Policy Modification Through Built-in tools
Identifies attempts to disable/modify the code signing policy through system native utilities. Code signing provides authenticity on a program, and grants the user with the ability to check whether the program has been tampered with. By allowing the execution of unsigned or self-signed code, threat actors can craft and execute malicious code.
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Identifies attempts to disable the code signing policy through the registry. Code signing provides authenticity on a program, and grants the user with the ability to check whether the program has been tampered with. By allowing the execution of unsigned or self-signed code, threat actors can craft and execute malicious code.
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Identifies modifications of the AmsiEnable registry key to 0, which disables the Antimalware Scan Interface (AMSI). An adversary can modify this key to disable AMSI protections.
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Identifies the execution of wbadmin to access the NTDS.dit file in a domain controller. Attackers with privileges from groups like Backup Operators can abuse the utility to perform credential access and compromise the domain.
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Identifies commands that can access and decrypt Veeam credentials stored in MSSQL databases. Attackers can use Veeam Credentials to target backups as part of destructive operations such as Ransomware attacks.
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Symbolic Link to Shadow Copy Created
Identifies the creation of symbolic links to a shadow copy. Symbolic links can be used to access files in the shadow copy, including sensitive files such as ntds.dit, System Boot Key and browser offline credentials.
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Wireless Credential Dumping using Netsh Command
Oct 11, 2024 · Domain: Endpoint OS: Windows Use Case: Threat Detection Tactic: Credential Access Tactic: Discovery Data Source: Elastic Endgame Resources: Investigation Guide Data Source: Elastic Defend Data Source: System Data Source: Microsoft Defender for Endpoint Data Source: Sysmon Data Source: SentinelOne ·Identifies attempts to dump Wireless saved access keys in clear text using the Windows built-in utility Netsh.
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Identifies the enable of the full user-mode dumps feature system-wide. This feature allows Windows Error Reporting (WER) to collect data after an application crashes. This setting is a requirement for the LSASS Shtinkering attack, which fakes the communication of a crash on LSASS, generating a dump of the process memory, which gives the attacker access to the credentials present on the system without having to bring malware to the system. This setting is not enabled by default, and applications must create their registry subkeys to hold settings that enable them to collect dumps.
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Identifies the creation of .kirbi files. The creation of this kind of file is an indicator of an attacker running Kerberos ticket dump utilities, such as Mimikatz, and precedes attacks such as Pass-The-Ticket (PTT), which allows the attacker to impersonate users using Kerberos tickets.
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Identifies the creation of a Local Security Authority Subsystem Service (lsass.exe) default memory dump. This may indicate a credential access attempt via trusted system utilities such as Task Manager (taskmgr.exe) and SQL Dumper (sqldumper.exe) or known pentesting tools such as Dumpert and AndrewSpecial.
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Identifies use of aspnet_regiis to decrypt Microsoft IIS connection strings. An attacker with Microsoft IIS web server access via a webshell or alike can decrypt and dump any hardcoded connection strings, such as the MSSQL service account password using aspnet_regiis command.
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Identifies attempts to modify the WDigest security provider in the registry to force the user's password to be stored in clear text in memory. This behavior can be indicative of an adversary attempting to weaken the security configuration of an endpoint. Once the UseLogonCredential value is modified, the adversary may attempt to dump clear text passwords from memory.
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Identifies the modification of the network logon provider registry. Adversaries may register a rogue network logon provider module for persistence and/or credential access via intercepting the authentication credentials in clear text during user logon.
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Identifies attempt to coerce a local NTLM authentication via HTTP using the Windows Printer Spooler service as a target. An adversary may use this primitive in combination with other techniques to elevate privileges on a compromised system.
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Windows Credential Manager allows you to create, view, or delete saved credentials for signing into websites, connected applications, and networks. An adversary may abuse this to list or dump credentials stored in the Credential Manager for saved usernames and passwords. This may also be performed in preparation of lateral movement.
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Identifies LSASS loading an unsigned or untrusted DLL. Windows Security Support Provider (SSP) DLLs are loaded into LSSAS process at system start. Once loaded into the LSA, SSP DLLs have access to encrypted and plaintext passwords that are stored in Windows, such as any logged-on user's Domain password or smart card PINs.
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Credential Acquisition via Registry Hive Dumping
Identifies attempts to export a registry hive which may contain credentials using the Windows reg.exe tool.
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Identifies a copy operation of the Active Directory Domain Database (ntds.dit) or Security Account Manager (SAM) files. Those files contain sensitive information including hashed domain and/or local credentials.
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Identifies modifications in registry keys associated with abuse of the Outlook Home Page functionality for command and control or persistence.
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Port Forwarding Rule Addition
Oct 11, 2024 · Domain: Endpoint OS: Windows Use Case: Threat Detection Tactic: Command and Control Tactic: Defense Evasion Resources: Investigation Guide Data Source: Elastic Endgame Data Source: Elastic Defend Data Source: Sysmon Data Source: SentinelOne Data Source: Microsoft Defender for Endpoint ·Identifies the creation of a new port forwarding rule. An adversary may abuse this technique to bypass network segmentation restrictions.
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Potential Credential Access via Windows Utilities
Oct 11, 2024 · Domain: Endpoint OS: Windows Use Case: Threat Detection Tactic: Credential Access Tactic: Defense Evasion Resources: Investigation Guide Data Source: Elastic Endgame Data Source: Elastic Defend Data Source: System Data Source: Microsoft Defender for Endpoint Data Source: SentinelOne Data Source: Sysmon ·Identifies the execution of known Windows utilities often abused to dump LSASS memory or the Active Directory database (NTDS.dit) in preparation for credential access.
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Potential DNS Tunneling via NsLookup
This rule identifies a large number (15) of nslookup.exe executions with an explicit query type from the same host. This may indicate command and control activity utilizing the DNS protocol.
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Potential File Download via a Headless Browser
Oct 11, 2024 · Domain: Endpoint OS: Windows Use Case: Threat Detection Tactic: Command and Control Resources: Investigation Guide Data Source: Windows Data Source: Elastic Endgame Data Source: Elastic Defend Data Source: System Data Source: Microsoft Defender for Endpoint Data Source: SentinelOne Data Source: Sysmon ·Identifies the use of a browser to download a file from a remote URL and from a suspicious parent process. Adversaries may use browsers to avoid ingress tool transfer restrictions.
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Potential File Transfer via Certreq
Oct 11, 2024 · Domain: Endpoint OS: Windows Use Case: Threat Detection Tactic: Defense Evasion Tactic: Command and Control Tactic: Exfiltration Data Source: Elastic Endgame Data Source: Elastic Defend Data Source: System Data Source: Microsoft Defender for Endpoint Data Source: Sysmon Data Source: SentinelOne ·Identifies Certreq making an HTTP Post request. Adversaries could abuse Certreq to download files or upload data to a remote URL.
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Remote File Download via Desktopimgdownldr Utility
Identifies the desktopimgdownldr utility being used to download a remote file. An adversary may use desktopimgdownldr to download arbitrary files as an alternative to certutil.
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Remote File Download via MpCmdRun
Identifies the Windows Defender configuration utility (MpCmdRun.exe) being used to download a remote file.
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Detects the use of Reflection.Assembly to load PEs and DLLs in memory in PowerShell scripts. Attackers use this method to load executables and DLLs without writing to the disk, bypassing security solutions.
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Detects the execution of the VScode portable binary with the tunnel command line option indicating an attempt to establish a remote tunnel session to Github or a remote VScode instance.
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Adversaries may implement command and control (C2) communications that use common web services to hide their activity. This attack technique is typically targeted at an organization and uses web services common to the victim network, which allows the adversary to blend into legitimate traffic activity. These popular services are typically targeted since they have most likely been used before compromise, which helps malicious traffic blend in.
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User Account Control (UAC) can help mitigate the impact of malware on Windows hosts. With UAC, apps and tasks always run in the security context of a non-administrator account, unless an administrator specifically authorizes administrator-level access to the system. This rule identifies registry value changes to bypass User Access Control (UAC) protection.
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Identifies use of WinRar or 7z to create an encrypted files. Adversaries will often compress and encrypt data in preparation for exfiltration.
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Identifies the use of the Exchange PowerShell cmdlet, New-MailBoxExportRequest, to export the contents of a primary mailbox or archive to a .pst file. Adversaries may target user email to collect sensitive information.
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Local Scheduled Task Creation
Indicates the creation of a scheduled task. Adversaries can use these to establish persistence, move laterally, and/or escalate privileges.
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Mshta Making Network Connections
Identifies Mshta.exe making outbound network connections. This may indicate adversarial activity, as Mshta is often leveraged by adversaries to execute malicious scripts and evade detection.
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Outbound Scheduled Task Activity via PowerShell
Identifies the PowerShell process loading the Task Scheduler COM DLL followed by an outbound RPC network connection within a short time period. This may indicate lateral movement or remote discovery via scheduled tasks.
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Identifies parent process spoofing used to thwart detection. Adversaries may spoof the parent process identifier (PPID) of a new process to evade process-monitoring defenses or to elevate privileges.
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This rule identifies when a User Account starts the Active Directory Replication Process. Attackers can use the DCSync technique to get credential information of individual accounts or the entire domain, thus compromising the entire domain.
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Potential Credential Access via LSASS Memory Dump
Identifies suspicious access to LSASS handle from a call trace pointing to DBGHelp.dll or DBGCore.dll, which both export the MiniDumpWriteDump method that can be used to dump LSASS memory content in preparation for credential access.
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Identifies the creation or change of a Windows executable file over network shares. Adversaries may transfer tools or other files between systems in a compromised environment.
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Potential SharpRDP Behavior
Identifies potential behavior of SharpRDP, which is a tool that can be used to perform authenticated command execution against a remote target via Remote Desktop Protocol (RDP) for the purposes of lateral movement.
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Identifies suspicious instances of the Windows Error Reporting process (WerFault.exe or Wermgr.exe) with matching command-line and process executable values performing outgoing network connections. This may be indicative of a masquerading attempt to evade suspicious child process behavior detections.
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Identifies the execution of a file that was created by the virtual system process. This may indicate lateral movement via network file shares.
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Identifies remote scheduled task creations on a target host. This could be indicative of adversary lateral movement.
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Identifies remote execution of Windows services over remote procedure call (RPC). This could be indicative of lateral movement, but will be noisy if commonly done by administrators.
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Identifies Service Control (sc.exe) spawning from script interpreter processes to create, modify, or start services. This can potentially indicate an attempt to elevate privileges or maintain persistence.
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Identifies potentially suspicious processes that are not trusted or living-off-the-land binaries (LOLBin) making Server Message Block (SMB) network connections over port 445. Windows File Sharing is typically implemented over SMB, which communicates between hosts using port 445. Legitimate connections are generally established by the kernel (PID 4). This rule helps to detect processes that might be port scanners, exploits, or user-level processes attempting lateral movement within the network by leveraging SMB connections.
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Identifies run key or startup key registry modifications. In order to survive reboots and other system interrupts, attackers will modify run keys within the registry or leverage startup folder items as a form of persistence.
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Suspicious Execution via Scheduled Task
Identifies execution of a suspicious program via scheduled tasks by looking at process lineage and command line usage.
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Suspicious PowerShell Engine ImageLoad
Identifies the PowerShell engine being invoked by unexpected processes. Rather than executing PowerShell functionality with powershell.exe, some attackers do this to operate more stealthily.
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Identifies suspicious Image Loading of the Remote Desktop Services ActiveX Client (mstscax), this may indicate the presence of RDP lateral movement capability.
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Identifies an unsigned library created in the last 5 minutes and subsequently loaded by a shared windows service (svchost). Adversaries may use this technique to maintain persistence or run with System privileges.
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Unsigned DLL Side-Loading from a Suspicious Folder
Identifies a Windows trusted program running from locations often abused by adversaries to masquerade as a trusted program and loading a recently dropped DLL. This behavior may indicate an attempt to evade defenses via side-loading a malicious DLL within the memory space of a signed processes.
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Identifies Windows programs run from unexpected parent processes. This could indicate masquerading or other strange activity on a system.
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Windows Service Installed via an Unusual Client
Identifies the creation of a Windows service by an unusual client process. Services may be created with administrator privileges but are executed under SYSTEM privileges, so an adversary may also use a service to escalate privileges from administrator to SYSTEM.
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Identifies the execution of scripts via HTML applications using Windows utilities rundll32.exe or mshta.exe. Adversaries may bypass process and/or signature-based defenses by proxying execution of malicious content with signed binaries.
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Identifies the execution of an MsiExec service child process followed by network or dns lookup activity. Adversaries may abuse Windows Installers for initial access and delivery of malware.
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Identifies when a browser process navigates to the Microsoft Help page followed by spawning an elevated process. This may indicate a successful exploitation for privilege escalation abusing a vulnerable Windows Installer repair setup.
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Identifies the Foxmail client spawning a child process with argument pointing to the Foxmail temp directory. This may indicate the successful exploitation of a Foxmail vulnerability for initial access and execution via a malicious email.
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Identifies suspicious PowerShell execution spawning from Windows Script Host processes (cscript or wscript.exe).
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Identifies the execution of the Windows Command Shell process (cmd.exe) with suspicious argument values. This behavior is often observed during malware installation.
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Identifies the execution of PowerShell with suspicious argument values. This behavior is often observed during malware installation leveraging PowerShell.
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An adversary can use the Windows command line debugging utility cdb.exe to execute commands or shellcode. This rule looks for those instances and where the cdb.exe binary is outside of the normal WindowsKit installation paths.
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Persistence via a Windows Installer
Identifies when the Windows installer process msiexec.exe creates a new persistence entry via scheduled tasks or startup.
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Identifies the load of a remote library by the WPS Office promecefpluginhost.exe executable. This may indicate the successful exploitation of CVE-2024-7262 or CVE-2024-7263 via DLL hijack abusing the ksoqing custom protocol handler.
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Identifies network activity from unexpected system applications. This may indicate adversarial activity as these applications are often leveraged by adversaries to execute code and evade detection.
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Enumeration of Privileged Local Groups Membership
Identifies instances of an unusual process enumerating built-in Windows privileged local groups membership like Administrators or Remote Desktop users.
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Identifies a privilege escalation attempt via exploiting CVE-2022-38028 to hijack the print spooler service execution.
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Identifies access attempts to the LSASS handle, which may indicate an attempt to dump credentials from LSASS memory.
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Identifies MsBuild.exe making outbound network connections. This may indicate adversarial activity as MsBuild is often leveraged by adversaries to execute code and evade detection.
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Detects attempts to exploit privilege escalation vulnerabilities related to the Print Spooler service. For more information refer to the following CVE's - CVE-2020-1048, CVE-2020-1337 and CVE-2020-1300 and verify that the impacted system is patched.
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Detects the first occurrence of a modification to Group Policy Object Attributes to add privileges to user accounts or use them to add users as local admins.
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Identifies the modification of the msDS-AllowedToDelegateTo attribute to KRBTGT. Attackers can use this technique to maintain persistence to the domain by having the ability to request tickets for the KRBTGT service.
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Process Injection by the Microsoft Build Engine
An instance of MSBuild, the Microsoft Build Engine, created a thread in another process. This technique is sometimes used to evade detection or elevate privileges.
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Detects the modification of Group Policy Object attributes to execute a scheduled task in the objects controlled by the GPO.
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Detects the modification of Group Policy Objects (GPO) to add a startup/logon script to users or computer objects.
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Identifies potential relay attacks against a domain controller (DC) by identifying authentication events using the domain controller computer account coming from other hosts to the DC that owns the account. Attackers may relay the DC hash after capturing it using forced authentication.
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Downloaded Shortcut Files
Identifies .lnk shortcut file downloaded from outside the local network. These shortcut files are commonly used in phishing campaigns.
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Downloaded URL Files
Identifies .url shortcut files downloaded from outside the local network. These shortcut files are commonly used in phishing campaigns.
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Identifies an executable created by a Microsoft Office application and subsequently executed. These processes are often launched via scripts inside documents or during exploitation of Microsoft Office applications.
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Identifies downloads of executable and archive files via the Windows Background Intelligent Transfer Service (BITS). Adversaries could leverage Windows BITS transfer jobs to download remote payloads.
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Identifies an executable or script file remotely downloaded via a TeamViewer transfer session.
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Identifies the creation of the Antimalware Scan Interface (AMSI) DLL in an unusual location. This may indicate an attempt to bypass AMSI by loading a rogue AMSI module instead of the legit one.
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Detects attempts to exploit privilege escalation vulnerabilities related to the Print Spooler service including CVE-2020-1048 and CVE-2020-1337.
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Identifies an unexpected file being modified by dns.exe, the process responsible for Windows DNS Server services, which may indicate activity related to remote code execution or other forms of exploitation.
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Identifies the creation or modification of a medium-size registry hive file on a Server Message Block (SMB) share, which may indicate an exfiltration attempt of a previously dumped Security Account Manager (SAM) registry hive for credential extraction on an attacker-controlled system.
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A scheduled task was created
Indicates the creation of a scheduled task using Windows event logs. Adversaries can use these to establish persistence, move laterally, and/or escalate privileges.
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A scheduled task was updated
Indicates the update of a scheduled task using Windows event logs. Adversaries can use these to establish persistence, by changing the configuration of a legit scheduled task. Some changes such as disabling or enabling a scheduled task are common and may may generate noise.
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Identify access to sensitive Active Directory object attributes that contains credentials and decryption keys such as unixUserPassword, ms-PKI-AccountCredentials and msPKI-CredentialRoamingTokens.
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Detects the creation and modification of an account with the "Don't Expire Password" option Enabled. Attackers can abuse this misconfiguration to persist in the domain and maintain long-term access using compromised accounts with this property.
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Account Password Reset Remotely
Identifies an attempt to reset a potentially privileged account password remotely. Adversaries may manipulate account passwords to maintain access or evade password duration policies and preserve compromised credentials.
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Identifies a user being added to an active directory group by the SYSTEM (S-1-5-18) user. This behavior can indicate that the attacker has achieved SYSTEM privileges in a domain controller, which attackers can obtain by exploiting vulnerabilities or abusing default group privileges (e.g., Server Operators), and is attempting to pivot to a domain account.
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Detects modifications in the AdminSDHolder object. Attackers can abuse the SDProp process to implement a persistent backdoor in Active Directory. SDProp compares the permissions on protected objects with those defined on the AdminSDHolder object. If the permissions on any of the protected accounts and groups do not match, the permissions on the protected accounts and groups are reset to match those of the domain's AdminSDHolder object, regaining their Administrative Privileges.
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Identifies a modification on the dsHeuristics attribute on the bit that holds the configuration of groups excluded from the SDProp process. The SDProp compares the permissions on protected objects with those defined on the AdminSDHolder object. If the permissions on any of the protected accounts and groups do not match, the permissions on the protected accounts and groups are reset to match those of the domain's AdminSDHolder object, meaning that groups excluded will remain unchanged. Attackers can abuse this misconfiguration to maintain long-term access to privileged accounts in these groups.
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Identifies User Account Control (UAC) bypass via eventvwr.exe. Attackers bypass UAC to stealthily execute code with elevated permissions.
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Active Directory Integrated DNS (ADIDNS) is one of the core components of AD DS, leveraging AD's access control and replication to maintain domain consistency. It stores DNS zones as AD objects, a feature that, while robust, introduces some security issues because of the default permission (Any authenticated users) to create DNS-named records. Attackers can perform Dynamic Spoofing attacks, where they monitor LLMNR/NBT-NS requests and create DNS-named records to target systems that are requested from multiple systems. They can also create specific records to target specific services, such as wpad, for spoofing attacks.
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Adversaries may install legitimate remote access tools (RAT) to compromised endpoints for further command-and-control (C2). Adversaries can rely on installed RATs for persistence, execution of native commands and more. This rule detects when a process is started whose name or code signature resembles commonly abused RATs. This is a New Terms rule type indicating the host has not seen this RAT process started before within the last 30 days.
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First Time Seen NewCredentials Logon Process
Identifies a new credentials logon type performed by an unusual process. This may indicate the existence of an access token forging capability that are often abused to bypass access control restrictions.
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This rule identifies when a User Account starts the Active Directory Replication Process for the first time. Attackers can use the DCSync technique to get credential information of individual accounts or the entire domain, thus compromising the entire domain.
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This rule identifies a high number (10) of process terminations (stop, delete, or suspend) from the same host within a short time period.
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Interactive Logon by an Unusual Process
Identifies interactive logon attempt with alternate credentials and by an unusual process. Adversaries may create a new token to escalate privileges and bypass access controls.
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Identifies the modification of an account's Kerberos pre-authentication options. An adversary with GenericWrite/GenericAll rights over the account can maliciously modify these settings to perform offline password cracking attacks such as AS-REP roasting.
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Identifies handle requests for the Local Security Authority Subsystem Service (LSASS) object access with specific access masks that many tools with a capability to dump memory to disk use (0x1fffff, 0x1010, 0x120089). This rule is tool agnostic as it has been validated against a host of various LSASS dump tools such as SharpDump, Procdump, Mimikatz, Comsvcs etc. It detects this behavior at a low level and does not depend on a specific tool or dump file name.
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An instance of MSBuild, the Microsoft Build Engine, started a PowerShell script or the Visual C# Command Line Compiler. This technique is sometimes used to deploy a malicious payload using the Build Engine.
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Identifies attempts to open a Microsoft Management Console File from untrusted paths. Adversaries may use MSC files for initial access and execution.
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Identify the modification of the msPKIAccountCredentials attribute in an Active Directory User Object. Attackers can abuse the credentials roaming feature to overwrite an arbitrary file for privilege escalation. ms-PKI-AccountCredentials contains binary large objects (BLOBs) of encrypted credential objects from the credential manager store, private keys, certificates, and certificate requests.
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Identifies multiple logon failures followed by a successful one from the same source address. Adversaries will often brute force login attempts across multiple users with a common or known password, in an attempt to gain access to accounts.
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Identifies multiple consecutive logon failures from the same source address and within a short time interval. Adversaries will often brute force login attempts across multiple users with a common or known password, in an attempt to gain access to accounts.
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Multiple Vault Web Credentials Read
Windows Credential Manager allows you to create, view, or delete saved credentials for signing into websites, connected applications, and networks. An adversary may abuse this to list or dump credentials stored in the Credential Manager for saved usernames and passwords. This may also be performed in preparation of lateral movement.
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Identifies the modification of the nTSecurityDescriptor attribute in a domain object with rights related to DCSync to a user/computer account. Attackers can use this backdoor to re-obtain access to hashes of any user/computer.
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Active Directory Integrated DNS (ADIDNS) is one of the core components of AD DS, leveraging AD's access control and replication to maintain domain consistency. It stores DNS zones as AD objects, a feature that, while robust, introduces some security issues, such as wildcard records, mainly because of the default permission (Any authenticated users) to create DNS-named records. Attackers can create wildcard records to redirect traffic that doesn't explicitly match records contained in the zone, becoming the Man-in-the-Middle and being able to abuse DNS similarly to LLMNR/NBNS spoofing.
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The Filter Manager Control Program (fltMC.exe) binary may be abused by adversaries to unload a filter driver and evade defenses.
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Potential Evasion via Windows Filtering Platform
Identifies multiple Windows Filtering Platform block events and where the process name is related to an endpoint security software. Adversaries may add malicious WFP rules to prevent Endpoint security from sending telemetry.
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Potential LSASS Clone Creation via PssCaptureSnapShot
Identifies the creation of an LSASS process clone via PssCaptureSnapShot where the parent process is the initial LSASS process instance. This may indicate an attempt to evade detection and dump LSASS memory for credential access.
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Potential Pass-the-Hash (PtH) Attempt
Adversaries may pass the hash using stolen password hashes to move laterally within an environment, bypassing normal system access controls. Pass the hash (PtH) is a method of authenticating as a user without having access to the user's cleartext password.
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Identifies a suspicious computer account name rename event, which may indicate an attempt to exploit CVE-2021-42278 to elevate privileges from a standard domain user to a user with domain admin privileges. CVE-2021-42278 is a security vulnerability that allows potential attackers to impersonate a domain controller via samAccountName attribute spoofing.
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Potential Remote Desktop Tunneling Detected
Aug 9, 2024 · Domain: Endpoint OS: Windows Use Case: Threat Detection Tactic: Command and Control Tactic: Lateral Movement Resources: Investigation Guide Data Source: Elastic Endgame Data Source: Elastic Defend Data Source: SentinelOne Data Source: Microsoft Defender for Endpoint Data Source: System ·Identifies potential use of an SSH utility to establish RDP over a reverse SSH Tunnel. This can be used by attackers to enable routing of network packets that would otherwise not reach their intended destination.
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Identify the modification of the msDS-KeyCredentialLink attribute in an Active Directory Computer or User Object. Attackers can abuse control over the object and create a key pair, append to raw public key in the attribute, and obtain persistent and stealthy access to the target user or computer object.
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Identifies the creation of a DNS record that is potentially meant to enable WPAD spoofing. Attackers can disable the Global Query Block List (GQBL) and create a "wpad" record to exploit hosts running WPAD with default settings for privilege escalation and lateral movement.
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Identifies a potential Windows Server Update Services (WSUS) abuse to execute psexec to enable for lateral movement. WSUS is limited to executing Microsoft signed binaries, which limits the executables that can be used to tools published by Microsoft.
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Identifies a privilege escalation attempt via named pipe impersonation. An adversary may abuse this technique by utilizing a framework such Metasploit's meterpreter getsystem command.
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Identifies multiple consecutive logon failures targeting an Admin account from the same source address and within a short time interval. Adversaries will often brute force login attempts across multiple users with a common or known password, in an attempt to gain access to accounts.
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Process Creation via Secondary Logon
Identifies process creation with alternate credentials. Adversaries may create a new process with a different token to escalate privileges and bypass access controls.
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Identifies the remote update to a computer account's DnsHostName attribute. If the new value set is a valid domain controller DNS hostname and the subject computer name is not a domain controller, then it's highly likely a preparation step to exploit CVE-2022-26923 in an attempt to elevate privileges from a standard domain user to domain admin privileges.
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Remote Scheduled Task Creation via RPC
Identifies scheduled task creation from a remote source. This could be indicative of adversary lateral movement.
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Remote Windows Service Installed
Identifies a network logon followed by Windows service creation with same LogonId. This could be indicative of lateral movement, but will be noisy if commonly done by administrators."
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SeDebugPrivilege Enabled by a Suspicious Process
Identifies the creation of a process running as SYSTEM and impersonating a Windows core binary privileges. Adversaries may create a new process with a different token to escalate privileges and bypass access controls.
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Identifies the assignment of the SeEnableDelegationPrivilege sensitive "user right" to a user. The SeEnableDelegationPrivilege "user right" enables computer and user accounts to be trusted for delegation. Attackers can abuse this right to compromise Active Directory accounts and elevate their privileges.
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Identifies a suspicious local successful logon event where the Logon Package is Kerberos, the remote address is set to localhost, followed by a sevice creation from the same LogonId. This may indicate an attempt to leverage a Kerberos relay attack variant that can be used to elevate privilege locally from a domain joined user to local System privileges.
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Suspicious MS Outlook Child Process
Aug 9, 2024 · Domain: Endpoint OS: Windows Use Case: Threat Detection Tactic: Initial Access Tactic: Defense Evasion Tactic: Execution Resources: Investigation Guide Data Source: Elastic Endgame Data Source: Elastic Defend Data Source: SentinelOne Data Source: Microsoft Defender for Endpoint Data Source: System ·Identifies suspicious child processes of Microsoft Outlook. These child processes are often associated with spear phishing activity.
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Identifies remote access to the registry using an account with Backup Operators group membership. This may indicate an attempt to exfiltrate credentials by dumping the Security Account Manager (SAM) registry hive in preparation for credential access and privileges elevation.
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Suspicious ScreenConnect Client Child Process
Identifies suspicious processes being spawned by the ScreenConnect client processes. This activity may indicate execution abusing unauthorized access to the ScreenConnect remote access software.
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