Malicious Shadow Copy Deletion via PowerShell Win32_ShadowCopy Remove-CimInstance (via process_creation)
- Product
- windows
- Category
- process_creation
- Author
- HuntRule
- Published
- 2026-09-26
- Updated
- 2026-09-26
ATT&CK techniques
ImpactRecon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
What it detects
This rule detects PowerShell deleting Volume Shadow Copies by pairing Get-CimInstance Win32_ShadowCopy with Remove-CimInstance, a recovery-inhibition command used by RansomHub per Group-IB. Adversaries remove shadow copies through CIM to block restoration before encryption, making this a strong pre-impact indicator.
Reporting behind it
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.
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