huntrule

Windows WerFault ReflectDebugger Registry Key Value Targeting

Flags registry set events targeting WerFault ReflectDebugger under Windows Error Reporting Hangs for potential persistence abuse.

FreeReviewedSigma · High · v1
Product
windows
Category
registry_set
Author
X__Junior (SigmaHQ), DRL 1.1
Published
2023-05-18
Updated
2026-07-30
AnalysisDetection

ATT&CK techniques

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 matches registry set activity targeting the ReflectDebugger value path under the Windows Error Reporting Hangs key associated with WerFault. Attackers can abuse this location to establish persistence or influence debugging/behavior of error handling components. The detection relies on Windows registry set telemetry that includes the TargetObject path ending with the specified ReflectDebugger location.

Reporting behind it

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Windows WerFault ReflectDebugger Registry Key Value Targeting
Pivot detection · T1036.003 · 9 related

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