Detects the load of RstrtMgr DLL (Restart Manager) by a suspicious process. This library has been used during ransomware campaigns to kill processes that would prevent file encryption by locking them (e.g. Conti ransomware, Cactus ransomware). It has also recently been seen used by the BiBi wiper for Windows. It could also be used for anti-analysis purposes by shut downing specific processes.

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Detects the load of RstrtMgr DLL (Restart Manager) by an uncommon process. This library has been used during ransomware campaigns to kill processes that would prevent file encryption by locking them (e.g. Conti ransomware, Cactus ransomware). It has also recently been seen used by the BiBi wiper for Windows. It could also be used for anti-analysis purposes by shut downing specific processes.

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Detects the execution of "gpg.exe" from uncommon location. Often used by ransomware and loaders to decrypt/encrypt data.

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Detects powershell process used to find and shut down local Hyper-V VMs using the Stop-VM cmdlet, as documented in the 2024 Morphisec report on Cicada3301 ransomware.

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Detects the use of the iisreset.exe utility to stop IIS web services. This is used to prevent users from accessing IIS web resources, thereby releasing/preventing locks which could inhibit ransomware-related encryption.

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Detects when S3 bucket versioning is disabled. Threat actors use this technique during AWS ransomware incidents prior to deleting S3 objects.

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Detects when adversaries stop services or processes by disabling their respective scheduled tasks in order to conduct data destructive activities

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Detects ADDInternals Cmdlet execution. A tool for administering Azure AD and Office 365. Which can be abused by threat actors to attack Azure AD or Office 365.

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Detects ADDInternals Cmdlet execution. A tool for administering Azure AD and Office 365. Which can be abused by threat actors to attack Azure AD or Office 365.

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Detects when a Microsoft Cloud App Security reported for users whose account were terminated in Azure AD, but still perform activities in other platforms such as AWS or Salesforce. This is especially relevant for users who use another account to manage resources, since these accounts are often not terminated when a user leaves the company.

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Detects the deletion of all backups or system state backups via "wbadmin.exe". This technique is used by numerous ransomware families and actors. This may only be successful on server platforms that have Windows Backup enabled.

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Detects a segmentation fault error message caused by a crashing apache worker process

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An application has been removed. Check if it is critical.

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Detects events generated by user-mode applications when they call the CveEventWrite API when a known vulnerability is trying to be exploited. MS started using this log in Jan. 2020 with CVE-2020-0601 (a Windows CryptoAPI vulnerability. Unfortunately, that is about the only instance of CVEs being written to this log.

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Identifies disabling of default Amazon Elastic Block Store (EBS) encryption in the current region. Disabling default encryption does not change the encryption status of your existing volumes.

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Detects when a EFS Fileshare is modified or deleted. You can't delete a file system that is in use. If the file system has any mount targets, the adversary must first delete them, so deletion of a mount will occur before deletion of a fileshare.

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Detects when a EFS Fileshare Mount is modified or deleted. An adversary breaking any file system using the mount target that is being deleted, which might disrupt instances or applications using those mounts.

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Identifies when an EKS cluster is created or deleted.

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Identifies when an ElastiCache security group has been modified or deleted.

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Identifies when a application credential is modified.

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Identifies when a application is deleted in Azure.

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Identifies when a application gateway is modified or deleted.

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Identifies when a application security group is modified or deleted.

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Detects when a Container Registry is created or deleted.

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Identifies when a device in azure is no longer managed or compliant

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Identifies when a device or device configuration in azure is modified or deleted.

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Identifies when DNS zone is modified or deleted.

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Identifies when a firewall is created, modified, or deleted.

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Identifies when Rule Collections (Application, NAT, and Network) is being modified or deleted.

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Identifies when a Firewall Rule Configuration is Modified or Deleted.

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Identifies when a key vault is modified or deleted.

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Identifies when a Keyvault Key is modified or deleted in Azure.

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Identifies when secrets are modified or deleted in Azure.

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Detects when a Azure Kubernetes Cluster is created or deleted.

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Identifies when a Azure Kubernetes network policy is modified or deleted.

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Identifies the deletion of Azure Kubernetes Pods.

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Detects the creation or patching of potential malicious RoleBinding/ClusterRoleBinding.

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Identifies when a Kubernetes account access a sensitive objects such as configmaps or secrets.

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Identifies when ClusterRoles/Roles are being modified or deleted.

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Identifies when a service account is modified or deleted.

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Identifies when a Firewall Policy is Modified or Deleted.

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Identifies when a network security configuration is modified or deleted.

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Identifies when a Point-to-site VPN is Modified or Deleted.

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Identifies when a suppression rule is created in Azure. Adversary's could attempt this to evade detection.

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Identifies when a virtual network device is being modified or deleted. This can be a network interface, network virtual appliance, virtual hub, or virtual router.

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Identifies when a Virtual Network is modified or deleted in Azure.

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Identifies when a VPN connection is modified or deleted.

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Detects deletion of files with extensions often used for backup files. Adversaries may delete or remove built-in operating system data and turn off services designed to aid in the recovery of a corrupted system to prevent recovery.

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Detect access to files and shares with names and extensions used by BlueSky ransomware which could indicate a current or previous encryption attempt.

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Detects the use of the bcdedit command to tamper with the boot configuration data. This technique is often times used by malware or attackers as a destructive way before launching ransomware.

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Detect a system being shutdown or put into different boot mode

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See what files are being deleted from flash file systems

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Modifications to a config that will serve an adversary's impacts or persistence

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Detects specific commands commonly used to remove or empty the syslog

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Detects the execution of the builtin "copy" command that targets a shadow copy (sometimes used to copy registry hives that are in use)

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Detects potential overwriting and deletion of a file using DD.

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Detects the usage of schtasks with the delete flag and the asterisk symbol to delete all tasks from the schedule of the local computer, including tasks scheduled by other users.

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Detects when adversaries stop services or processes by deleting their respective scheduled tasks in order to conduct data destructive activities

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Shadow Copies deletion using operating systems utilities via PowerShell

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Deletes Windows Volume Shadow Copies with PowerShell code and Get-WMIObject. This technique is used by numerous ransomware families such as Sodinokibi/REvil

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Detects usage of the "cipher" built-in utility in order to overwrite deleted data from disk. Adversaries may destroy data and files on specific systems or in large numbers on a network to interrupt availability to systems, services, and network resources. Data destruction is likely to render stored data irrecoverable by forensic techniques through overwriting files or data on local and remote drives

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Detects deletion of Windows Volume Shadow Copies with PowerShell code and Get-WMIObject. This technique is used by numerous ransomware families such as Sodinokibi/REvil

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Detects deletion of Windows Volume Shadow Copies with PowerShell code and Get-WMIObject. This technique is used by numerous ransomware families such as Sodinokibi/REvil

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Identifies clients that may be performing DNS lookups associated with common currency mining pools.

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Detects the recovery of files from backups via "wbadmin.exe". Attackers can restore sensitive files such as NTDS.DIT or Registry Hives from backups in order to potentially extract credentials.

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Detects suspicious parameters of fsutil (deleting USN journal, configuring it with small size, etc). Might be used by ransomwares during the attack (seen by NotPetya and others).

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Detects delete action in the Github audit logs for codespaces, environment, project and repo.

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A self-hosted runner is a system that you deploy and manage to execute jobs from GitHub Actions on GitHub.com. This rule detects changes to self-hosted runners configurations in the environment. The self-hosted runner configuration changes once detected, it should be validated from GitHub UI because the log entry may not provide full context.

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Identifies when a DNS Zone is modified or deleted in Google Cloud.

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Identifies when sensitive information is re-identified in google Cloud.

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Identifies when a service account is disabled or deleted in Google Cloud.

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Identifies when a service account is modified in Google Cloud.

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Detect when a Cloud SQL DB has been modified or deleted.

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Detects when storage bucket is modified or deleted in Google Cloud.

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Identifies when a VPN Tunnel Modified or Deleted in Google Cloud.

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Detects when an an application is removed from Google Workspace.

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Detects when multi-factor authentication (MFA) is disabled.

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Detects when an a role is modified or deleted in Google Workspace.

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Detects when an a role privilege is deleted in Google Workspace.

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Detects execution of the "groupdel" binary. Which is used to delete a group. This is sometimes abused by threat actors in order to cover their tracks

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Detects events in which a history file gets deleted, e.g. the ~/bash_history to remove traces of malicious activity

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Detects when adversaries try to stop system services or processes by deleting their respective scheduled tasks in order to conduct data destructive activities

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Detects command line parameters or strings often used by crypto miners

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Detects process connections to a Monero crypto mining pool

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Detects locked workstation session events that occur automatically after a standard period of inactivity.

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Detects LockerGoga ransomware activity via specific command line.

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Detects when a Microsoft Cloud App Security reported when a user uploads files to the cloud that might be infected with ransomware.

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Detects when a Microsoft Cloud App Security reported a user has deleted a unusual a large volume of files.

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Detects suspicious DNS queries to Monero mining pools

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Detects initiated network connections to crypto mining pools

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Detects the addition of a new file or path exclusion to MacOS Time Machine via the "tmutil" utility. An adversary could exclude a path from Time Machine backups to prevent certain files from being backed up.

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Detects the addition of new root, CA or AuthRoot certificates to the Windows registry

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Detects a core dump of a crashing Nginx worker process, which could be a signal of a serious problem or exploitation attempts.

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This the exploitation of a NTFS vulnerability as reported without many details via Twitter

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Detects when a API Token is revoked.

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Detects when an application is modified or deleted.

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Detects when an application Sign-on Policy is modified or deleted.

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Detects when an Network Zone is Deactivated or Deleted.

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Detects when an Okta policy is modified or deleted.

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Detects when an Policy Rule is Modified or Deleted.

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Detects when unauthorized access to app occurs.

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Detects when an user account is locked out.

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Detects when an user account is locked or suspended.

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Detects when an user assumed another user account.

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Detects instances where an NTP service on an OpenCanary node has had a NTP monlist request.

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Detects overwriting (effectively wiping/deleting) of a file.

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Detects usage of the "Import-Module" cmdlet to load the "Microsoft.ActiveDirectory.Management.dl" DLL. Which is often used by attackers to perform AD enumeration.

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Detects usage of the "Import-Module" cmdlet to load the "Microsoft.ActiveDirectory.Management.dl" DLL. Which is often used by attackers to perform AD enumeration.

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Detects usage of the "Import-Module" cmdlet to load the "Microsoft.ActiveDirectory.Management.dl" DLL. Which is often used by attackers to perform AD enumeration.

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Detects command line patterns used by BlackByte ransomware in different operations

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Detects a specific command used by the Conti ransomware group

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Detects command line parameters or strings often used by crypto miners

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Detects potential Dtrack RAT activity via specific process patterns

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Detects the use of SDelete to erase a file not the free space

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Detects specific process characteristics of Maze ransomware word document droppers

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Detect changes to the "LegalNoticeCaption" or "LegalNoticeText" registry values where the message set contains keywords often used in ransomware ransom messages

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Detects changes of sensitive and critical files. Monitors files that you don't expect to change without planning on Linux system.

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Detects the execution of "reg.exe" to alter registry keys that would replace the user's desktop background. This is a common technique used by malware to change the desktop background to a ransom note or other image.

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Detects registry value settings that would replace the user's desktop background. This is a common technique used by malware to change the desktop background to a ransom note or other image.

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Detects powershell scripts that adds a Name Resolution Policy Table (NRPT) rule for the specified namespace. This will bypass the default DNS server and uses a specified server for answering the query.

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Detects the modification of the registry to disable a system restore on the computer

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Adversaries may interrupt availability of system and network resources by inhibiting access to accounts utilized by legitimate users. Accounts may be deleted, locked, or manipulated (ex: changed credentials) to remove access to accounts.

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Detects the execution of a renamed "gpg.exe". Often used by ransomware and loaders to decrypt/encrypt data.

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Detects the use of a renamed SysInternals Sdelete, which is something an administrator shouldn't do (the renaming)

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An adversary may deface systems internal to an organization in an attempt to intimidate or mislead users. This may take the form of modifications to internal websites, or directly to user systems with the replacement of the desktop wallpaper

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Detects renaming of file while deletion with SDelete tool.

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Detects a command that accesses the VolumeShadowCopy in order to extract sensitive files such as the Security or SAM registry hives or the AD database (ntds.dit)

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Detects Silence EmpireDNSAgent as described in the Group-IP report

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Detects the stopping of a Windows service via the "net" utility.

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Detects the stopping of a Windows service via the PowerShell Cmdlet "Stop-Service"

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Detects the stopping of a Windows service via the "sc.exe" utility

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Detects file renames where the target filename uses an uncommon double extension. Could indicate potential ransomware activity renaming files and adding a custom extension to the encrypted files, such as ".jpg.crypted", ".docx.locky", etc.

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Ransomware create txt file in the user Desktop

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Use of the commandline to shutdown or reboot windows

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Detects the rare use of the command line tool shutdown to logoff a user

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Detects suspicious log entries in Linux log files

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Detects when a user manipulates with Firmward Password on MacOS. NOTE - this command has been disabled on silicon-based apple computers.

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Detects suspicious addition to BitLocker related registry keys via the reg.exe utility

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Detects the image load of vss_ps.dll by uncommon executables

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Detects the image load of VSS DLL by uncommon executables

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Detects the image load of VSS DLL by uncommon executables

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Adversaries may shutdown/reboot systems to interrupt access to, or aid in the destruction of, those systems.

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Adversaries may shutdown/reboot systems to interrupt access to, or aid in the destruction of, those systems.

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Detects deletion attempts of MacOS Time Machine backups via the native backup utility "tmutil". An adversary may perform this action before launching a ransonware attack to prevent the victim from restoring their files.

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Detects disabling of Time Machine (Apple's automated backup utility software) via the native macOS backup utility "tmutil". An attacker can use this to prevent backups from occurring.

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Detects execution of the "userdel" binary. Which is used to delete a user account and related files. This is sometimes abused by threat actors in order to cover their tracks

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Detects a user log-off activity. Could be used for example to correlate information during forensic investigations

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Detects WannaCry ransomware activity

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Detects the deletion of backups or system state backups via "wbadmin.exe". This technique is used by numerous ransomware families and actors. This may only be successful on server platforms that have Windows Backup enabled.

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Detects Windows update errors including installation failures and connection issues. Defenders should observe this in case critical update KBs aren't installed.

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It’s not uncommon for ransomware operators to leverage WMI to delete volume shadows, significantly complicating the process for recovering access to encrypted systems and files. If you want to detect ransomware using WMI to delete shadow copies, consider looking for wmic.exe execution with command lines including shadowcopy or delete. Part of the RedCanary 2024 Threat Detection Report.

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Detects multiple blocks by the mod_security module (Web Application Firewall)

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Detects multiple file rename or delete events occurrence within a specified period of time by a same user (these events may signalize about ransomware activity).

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Detects creation of potentially-encrypted files by Vice Society ransomeware. As this is based only on file extensions, the analyst should investigate surrounding activity to validate that this is not part of a benign applicatoin.

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Detects registry modifications occuring in tandem with disruption of boot processes with bcdedit (or as a method to evade detection)

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Detects the use of bcdedit to disrupt normal boot processes.

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Detects adversaries using WMI to delete shadow copies. Inspired by the 2022 Red Canary Threat Detection report.

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