Malicious Windows Event Log Clearing via wevtutil (via process_creation)

PremiumReviewedSigma · High · v1
Category
process_creation
Author
HuntRule
Published
2026-06-17
Updated
2026-08-28

ATT&CK techniques

  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 wevtutil.exe clearing Windows event logs which generates cleared-log events such as EventID 1102 and 104. LockBit operators wiped logs to destroy forensic evidence after exploitation and credential theft. Log clearing is a deliberate anti-forensic action rarely performed by legitimate administrators at scale.

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Malicious Clearing of Windows Event Logs (via process_creation)
Suspicious Event Log Clearing via wevtutil During Ransomware Activity
Suspicious Event Log Clearing via Get-WinEvent ClearLog (Qilin)
Suspicious Windows Event Log Clearing via wevtutil on EC2 Host
Suspicious Browser History Wipe via RunDll32 ClearMyTracksByProcess
Malicious Windows Event Log Clearing via wevtutil (via process_creation)
Pivot detection · T1685.005 · 9 related

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