Suspicious ClickFix Command Staged in RunMRU Registry Key

ATT&CK techniques

Persistence → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
- T1112Modify Registry
Priv Esc
Defense Evasion
- T1112Modify Registry
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects an mshta, PowerShell, or HTTP-bearing command written into the Explorer RunMRU registry key, the artifact left when a user pastes a ClickFix lure into the Windows Run dialog. RunMRU records commands executed through Run, exposing the social engineering payload. Interpreter or URL strings in RunMRU are a reliable indicator of ClickFix execution.

Reporting behind it

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Suspicious ClickFix Command Staged in RunMRU Registry Key

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.

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