Detection rules › Sigma
Potentially Suspicious Child Process Of DiskShadow.EXE
Detects potentially suspicious child processes of "Diskshadow.exe". This could be an attempt to bypass parent/child relationship detection or application whitelisting rules.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Stealth | T1218 System Binary Proxy Execution |
Event coverage
| Provider | Event | Title |
|---|---|---|
| Sysmon | Event ID 1 | Process creation |
| Security-Auditing | Event ID 4688 | A new process has been created. |
Rule body yaml
title: Potentially Suspicious Child Process Of DiskShadow.EXE
id: 9f546b25-5f12-4c8d-8532-5893dcb1e4b8
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: 56b1dde8-b274-435f-a73a-fb75eb81262a # Diskshadow Child Process Spawned
type: similar
- id: 0c2f8629-7129-4a8a-9897-7e0768f13ff2 # Diskshadow Script Mode Execution
type: similar
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
tags:
- attack.stealth
- attack.t1218
logsource:
category: process_creation
product: windows
detection:
selection:
ParentImage|endswith: '\diskshadow.exe'
Image|endswith:
# Note: add or remove additional binaries according to your org needs
- '\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
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
ParentImage|endswith: '\diskshadow.exe'
Image|endswith:
- '\certutil.exe'
- '\cscript.exe'
- '\mshta.exe'
- '\powershell.exe'
- '\pwsh.exe'
- '\regsvr32.exe'
- '\rundll32.exe'
- '\wscript.exe'
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
Image | ends_with |
|
ParentImage | ends_with |
|