Suspicious Command Execution Recorded in RunMRU Registry

ATT&CK techniques

Execution

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

What it detects

This rule detects the Explorer RunMRU history recording an entry containing a script interpreter or download command, evidence that a user pasted an attacker-supplied command into the Run dialog as part of a ClickFix lure. This was observed across ClickFix variants. RunMRU values invoking powershell, cmd, mshta, or curl indicate socially-engineered execution through the Run box.

Reporting behind it

Related detections9 linkedT1204.004 — drag to rearrange

Suspicious mshta Downloading Remote Payload via ClickFix

Malicious ClickFix Execution via Headless Conhost

Suspicious PrivacyDrive.exe Execution from AppData Directory (via process_creation)

Malicious PowerShell Clipboard Script Execution via ScriptBlock Create

Malicious ClickFix MSI Download and Execution via PowerShell

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

Malicious Remote Script Piped to a Shell on macOS (via process_creation)

ClickFix Paste-Jacking Execution of mshta Retrieving Remote Payload (via process_creation)

Windows Process Creation: File Upload Clickfix Lure via Browser to Command Execution

Suspicious Command Execution Recorded in RunMRU Registry

Pivot detection · T1204.004 · 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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