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

PremiumReviewedSigma · High · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-08-31
Updated
2026-08-31

ATT&CK techniques

Execution → Defense Evasion
  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 mshta.exe launched from the Windows Explorer Run dialog to fetch a remote payload over HTTP, the paste-jacking or ClickFix execution pattern in which a user is tricked into pasting a clipboard-injected command. Adversaries use this to run remote HTA or XLL content and stage stealer malware, making detection of Explorer-spawned mshta with a URL a strong signal of social-engineering-driven execution.

Related detections9 linkedT1218.005 — drag to rearrange
Suspicious RunMRU Entry Launching LOLBIN via ClickFix Run Dialog
Suspicious msdt Execution of Audio Diagnostic via UNC1069 ClickFix
Suspicious mshta Downloading Remote Payload via ClickFix
Suspicious PowerShell Spawned by mshta.exe in FakeSG Chain (via process_creation)
Suspicious Hidden PowerShell Spawned by MSHTA for Boot Persistence (via process_creation)
Malicious HTA Payload Download and Execution via PowerShell One-Liner (via process_creation)
Suspicious ClickFix RunMRU Entry Recording LOLBIN Command from Run Dialog
Suspicious mshta Executing Remote Content via ClickFix Lure
Suspicious mshta Launched from Explorer via ClickFix Run Dialog (via process_creation)
ClickFix Paste-Jacking Execution of mshta Retrieving Remote Payload (via process_creation)
Pivot detection · T1218.005 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.