Potentially Suspicious Child Process Of DiskShadow.EXE

Title: Potentially Suspicious Child Process Of DiskShadow.EXE
Status: test
Description:Detects potentially suspicious child processes of "Diskshadow.exe". This could be an attempt to bypass parent/child relationship detection or application whitelisting rules.
References:
  -https://bohops.com/2018/03/26/diskshadow-the-return-of-vss-evasion-persistence-and-active-directory-database-extraction/
  -https://www.ired.team/offensive-security/credential-access-and-credential-dumping/ntds.dit-enumeration
  -https://medium.com/@cyberjyot/lolbin-execution-via-diskshadow-f6ff681a27a4
  -https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/diskshadow
  -https://www.lifars.com/wp-content/uploads/2022/01/GriefRansomware_Whitepaper-2.pdf
  -https://www.zscaler.com/blogs/security-research/technical-analysis-crytox-ransomware
  -https://research.checkpoint.com/2022/evilplayout-attack-against-irans-state-broadcaster/
Author: Nasreddine Bencherchali (Nextron Systems)
Date: 2023-09-15
modified:None
Tags:

• -'attack.stealth'
• -'attack.t1218'

Logsource:

• category: process_creation
• product: windows

Detection:
  selection:
    ParentImage|endswith: '\diskshadow.exe'
    Image|endswith:
      -'\certutil.exe'
      -'\cscript.exe'
      -'\mshta.exe'
      -'\powershell.exe'
      -'\pwsh.exe'
      -'\regsvr32.exe'
      -'\rundll32.exe'
      -'\wscript.exe'

  condition:selection
Falsepositives:
  -False postitve can occur in cases where admin scripts levreage the "exec" flag to execute applications
Level: medium