huntrule

Suspicious Registry Class Key Creation for COLDRIVER Persistence

PremiumReviewedSigma · Medium · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-10-12
Updated
2026-10-12
AnalysisDetection

ATT&CK techniques

Persistence → Defense Evasion

  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Cred Access

  9. Discovery

  10. Lateral Movement

  11. Collection

  12. C2

  13. Exfiltration

  14. Impact

What it detects

This rule detects reg.exe adding an unusual file extension class key named pietas under HKCU Software Classes with binary data as observed in COLDRIVER intrusions. Attackers abuse custom class associations to hide configuration or trigger loader execution.

Reporting behind it

Related detections9 linkedT1112 — drag to rearrange
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Suspicious HrServ Registry Command Channel under IdentityStore RemoteFile (via registry_set)
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Suspicious PowerShell Decoding Base64 Payload Stored in Registry
Suspicious Remote Desktop Enablement via Registry By Ransomware
Suspicious VBScript Payload Stored in CurrentVersion Registry Value (via registry_set)
Suspicious Registry Class Key Creation for COLDRIVER Persistence
Pivot detection · T1112 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.