sigmamediumHunting

Diskshadow Child Process Spawned

Detects any child process spawning from "Diskshadow.exe". This could be due to executing Diskshadow in interpreter mode or script mode and using the "exec" flag to launch other applications.

MITRE ATT&CK

T1218

defense-evasionexecution

Detection Query

selection:
  ParentImage|endswith: \diskshadow.exe
filter_main_werfault:
  Image|endswith: :\Windows\System32\WerFault.exe
condition: selection and not 1 of filter_main_*

Author

Harjot Singh @cyb3rjy0t

Created

2023-09-15

Data Sources

windowsProcess Creation Events

Platforms

windows

References

Tags

attack.defense-evasionattack.t1218attack.executiondetection.threat-hunting

Raw Content

title: Diskshadow Child Process Spawned
id: 56b1dde8-b274-435f-a73a-fb75eb81262a
related:
    - id: fa1a7e52-3d02-435b-81b8-00da14dd66c1 # Diskshadow Script Mode - Execution From Potential Suspicious Location
      type: similar
    - id: 1dde5376-a648-492e-9e54-4241dd9b0c7f # Diskshadow Script Mode - Uncommon Script Extension Execution
      type: similar
    - id: 9f546b25-5f12-4c8d-8532-5893dcb1e4b8 # Potentially Suspicious Child Process Of DiskShadow.EXE
      type: similar
    - id: 0c2f8629-7129-4a8a-9897-7e0768f13ff2 # Diskshadow Script Mode Execution
      type: similar
status: test
description: Detects any child process spawning from "Diskshadow.exe". This could be due to executing Diskshadow in interpreter mode or script mode and using the "exec" flag to launch other applications.
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
author: Harjot Singh @cyb3rjy0t
date: 2023-09-15
tags:
    - attack.defense-evasion
    - attack.t1218
    - attack.execution
    - detection.threat-hunting
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage|endswith: '\diskshadow.exe'
    filter_main_werfault:
        Image|endswith: ':\Windows\System32\WerFault.exe'
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Likely from legitimate usage of Diskshadow in Interpreter mode.
level: medium