Suspicious ClickFix RunMRU Entry Recording LOLBIN Command from Run Dialog

ATT&CK techniques

Execution → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
- T1059.001PowerShell
- T1204.004Malicious Copy and Paste
Persistence
- T1112Modify Registry
Priv Esc
Defense Evasion
- T1112Modify Registry
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects RunMRU registry values that capture LOLBIN commands such as powershell, mshta, rundll32, or msbuild pasted into the Windows Run dialog. Microsoft describes this as the core artifact of the ClickFix social engineering technique that tricks users into executing attacker commands. A scripting or proxy binary launched from the Run dialog is rare for legitimate users, so these entries flag the user-driven execution step.

Reporting behind it

Related detections9 linkedT1059.001 — drag to rearrange

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Obfuscated Paste-and-Run Execution From the Windows Run Dialog (via process_creation)

Malicious WDigest UseLogonCredential Enabled for Cleartext Credential Theft (via registry_set)

Suspicious Access to Chrome Encrypted Preference MAC Registry Values (via registry_set)

Suspicious RunMRU Entry Launching LOLBIN via ClickFix Run Dialog

Suspicious ClickFix RunMRU Entry Recording LOLBIN Command from Run Dialog

Pivot detection · T1059.001 · 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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