Root Certificate Installed From Susp Locations

 1title: Root Certificate Installed From Susp Locations
 2id: 5f6a601c-2ecb-498b-9c33-660362323afa
 3status: test
 4description: Adversaries may install a root certificate on a compromised system to avoid warnings when connecting to adversary controlled web servers.
 5references:
 6    - https://www.microsoft.com/security/blog/2022/09/07/profiling-dev-0270-phosphorus-ransomware-operations/
 7    - https://learn.microsoft.com/en-us/powershell/module/pki/import-certificate?view=windowsserver2022-ps
 8author: Nasreddine Bencherchali (Nextron Systems)
 9date: 2022-09-09
10modified: 2023-01-16
11tags:
12    - attack.defense-evasion
13    - attack.t1553.004
14logsource:
15    category: process_creation
16    product: windows
17detection:
18    selection:
19        CommandLine|contains|all:
20            - 'Import-Certificate'
21            - ' -FilePath '
22            - 'Cert:\LocalMachine\Root'
23        CommandLine|contains:
24            - '\AppData\Local\Temp\'
25            - ':\Windows\TEMP\'
26            - '\Desktop\'
27            - '\Downloads\'
28            - '\Perflogs\'
29            - ':\Users\Public\'
30    condition: selection
31falsepositives:
32    - Unlikely
33level: high

References

• https://www.microsoft.com/security/blog/2022/09/07/profiling-dev-0270-phosphorus-ransomware-operations/

  
  Read More

• Import-Certificate (pki)

  

  Use this topic to help manage Windows and Windows Server technologies with Windows PowerShell.

  
  Read More

Related rules

• Cisco Crypto Commands
• Install Root Certificate
• New Root Certificate Installed Via CertMgr.EXE
• New Root Certificate Installed Via Certutil.EXE
• Root Certificate Installed - PowerShell