Delete Volume Shadow Copies Via WMI With PowerShell — Sigma Rule

Rule metadata and linked tags

Author: frack113. Source status: stable; severity: high. Source dates: 2021-06-03 / 2023-10-27.

{
  "product": "windows",
  "category": "ps_classic_start"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: a841dc84cc7af91787733b09ae05cb04dc0d456782bbba067d8f443092c1fecf

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: Delete Volume Shadow Copies Via WMI With PowerShell
id: 87df9ee1-5416-453a-8a08-e8d4a51e9ce1
status: stable
description: Shadow Copies deletion using operating systems utilities via PowerShell
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1490/T1490.md
    - https://www.fortinet.com/blog/threat-research/stomping-shadow-copies-a-second-look-into-deletion-methods
author: frack113
date: 2021-06-03
modified: 2023-10-27
tags:
    - attack.impact
    - attack.t1490
logsource:
    product: windows
    category: ps_classic_start
detection:
    selection:
        Data|contains|all:
            - 'Get-WmiObject'
            - 'Win32_ShadowCopy'
        Data|contains:
            - 'Delete()'
            - 'Remove-WmiObject'
    condition: selection
falsepositives:
    - Legitimate Administrator deletes Shadow Copies using operating systems utilities for legitimate reason
level: high

Original YAML and metadata in JSON

False positives

• Legitimate Administrator deletes Shadow Copies using operating systems utilities for legitimate reason

Source references

• https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1490/T1490.md
• https://www.fortinet.com/blog/threat-research/stomping-shadow-copies-a-second-look-into-deletion-methods