Suspicious Command in RunMRU Registry Indicating ClickFix Execution (via registry_set)

ATT&CK techniques

Execution

Recon
Resource Dev
Initial Access
Execution
- T1059.001PowerShell
- T1204.002Malicious File
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects a RunMRU registry entry containing a script interpreter or download command, a host artifact left when a victim pastes a ClickFix payload into the Windows Run dialog. The RunMRU key records the exact command executed through Win plus R.

Reporting behind it

Related detections9 linkedT1059.001 — drag to rearrange

Suspicious PowerShell Launched by MSIX StartingScriptWrapper From WindowsApps via Process Creation (via process_creation)

Suspicious PowerShell Remote TXT Payload Download Spawned by Shortcut via LNK (via process_creation)

Suspicious Script Interpreter Spawned by OneNote via Embedded Attachment (via process_creation)

Suspicious ClickFix Command Execution via RunMRU Registry Key

Suspicious PowerShell Download Spawned From Explorer via ClickFix (via process_creation)

Suspicious Lampion ClickFix PowerShell Download and Execute via Run Dialog

Suspicious cmd.exe Launching Encoded PowerShell From Shortcut File

Suspicious Encoded PowerShell Spawned from Explorer via ClickFix

Malicious Office Application Spawning Command Interpreter

Suspicious Command in RunMRU Registry Indicating ClickFix Execution (via registry_set)

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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