Create Volume Shadow Copy with Powershell — Sigma Rule

Rule metadata and linked tags

Author: frack113. Source status: test; severity: high. Source dates: 2022-01-12 / not supplied.

{
  "product": "windows",
  "category": "ps_script",
  "definition": "Requirements: Script Block Logging must be enabled"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: dc853ccedb7af3a3a6035bb2ac3d78ee37b98ea91184dda7658411ae8ad91fec

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Create Volume Shadow Copy with Powershell
id: afd12fed-b0ec-45c9-a13d-aa86625dac81
status: test
description: Adversaries may attempt to access or create a copy of the Active Directory domain database in order to steal credential information
references:
    - https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.management/get-wmiobject?view=powershell-5.1&viewFallbackFrom=powershell-7
author: frack113
date: 2022-01-12
tags:
    - attack.credential-access
    - attack.t1003.003
    - attack.ds0005
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection:
        ScriptBlockText|contains|all:
            - Win32_ShadowCopy
            - ').Create('
            - ClientAccessible
    condition: selection
falsepositives:
    - Legitimate PowerShell scripts
level: high

Original YAML and metadata in JSON

False positives

• Legitimate PowerShell scripts

Source references

• https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.management/get-wmiobject?view=powershell-5.1&viewFallbackFrom=powershell-7