Potentially Suspicious Child Process Of DiskShadow.EXE

calendar Feb 26, 2024 · attack.defense_evasion attack.t1218  ·
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Detects potentially suspicious child processes of "Diskshadow.exe". This could be an attempt to bypass parent/child relationship detection or application whitelisting rules.

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 1title: Potentially Suspicious Child Process Of DiskShadow.EXE
 2id: 9f546b25-5f12-4c8d-8532-5893dcb1e4b8
 3related:
 4    - id: fa1a7e52-3d02-435b-81b8-00da14dd66c1 # Diskshadow Script Mode - Execution From Potential Suspicious Location
 5      type: similar
 6    - id: 1dde5376-a648-492e-9e54-4241dd9b0c7f # Diskshadow Script Mode - Uncommon Script Extension Execution
 7      type: similar
 8    - id: 56b1dde8-b274-435f-a73a-fb75eb81262a # Diskshadow Child Process Spawned
 9      type: similar
10    - id: 0c2f8629-7129-4a8a-9897-7e0768f13ff2 # Diskshadow Script Mode Execution
11      type: similar
12status: experimental
13description: Detects potentially suspicious child processes of "Diskshadow.exe". This could be an attempt to bypass parent/child relationship detection or application whitelisting rules.
14references:
15    - https://bohops.com/2018/03/26/diskshadow-the-return-of-vss-evasion-persistence-and-active-directory-database-extraction/
16    - https://www.ired.team/offensive-security/credential-access-and-credential-dumping/ntds.dit-enumeration
17    - https://medium.com/@cyberjyot/lolbin-execution-via-diskshadow-f6ff681a27a4
18    - https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/diskshadow
19    - https://www.lifars.com/wp-content/uploads/2022/01/GriefRansomware_Whitepaper-2.pdf
20    - https://www.zscaler.com/blogs/security-research/technical-analysis-crytox-ransomware
21    - https://research.checkpoint.com/2022/evilplayout-attack-against-irans-state-broadcaster/
22author: Nasreddine Bencherchali (Nextron Systems)
23date: 2023/09/15
24tags:
25    - attack.defense_evasion
26    - attack.t1218
27logsource:
28    category: process_creation
29    product: windows
30detection:
31    selection:
32        ParentImage|endswith: '\diskshadow.exe'
33        Image|endswith:
34            # Note: add or remove additional binaries according to your org needs
35            - '\certutil.exe'
36            - '\cscript.exe'
37            - '\mshta.exe'
38            - '\powershell.exe'
39            - '\pwsh.exe'
40            - '\regsvr32.exe'
41            - '\rundll32.exe'
42            - '\wscript.exe'
43    condition: selection
44falsepositives:
45    - False postitve can occur in cases where admin scripts levreage the "exec" flag to execute applications
46level: medium

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