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

PremiumReviewedSigma · High · v1
Product
windows
Category
registry_set
Author
HuntRule
Published
2026-06-20
Updated
2026-08-28

ATT&CK techniques

Execution
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Persistence

  5. Priv Esc

  6. Defense Evasion

  7. Cred Access

  8. Discovery

  9. Lateral Movement

  10. Collection

  11. C2

  12. Exfiltration

  13. 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.

Related detections9 linkedT1059.001 — drag to rearrange
Malicious Web Browser Spawning Command or Script Interpreter
Suspicious Python Inline Exec Execution in STARKVEIL Chain
Malicious TELEPUZ ClickFix Stager via Hidden PowerShell Grab Endpoint
Suspicious Hidden PowerShell Retrieving VBScript from mcdir.me by Millenium RAT (via process_creation)
Suspicious Edge Update Setup Spawning PowerShell via ClearFake
Suspicious PowerShell Locating and Running MSBuild Project (via process_creation)
Malicious Excel Macro Spawning Scripting Interpreter Downloader (via process_creation)
Suspicious PowerShell ReadAllBytes and Expand-Archive Payload Staging (via process_creation)
Suspicious Script Interpreter Command Recorded in Explorer RunMRU History (via registry_set)
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.