Suspicious Edge Update Setup Spawning PowerShell via ClearFake

PremiumReviewedSigma · High · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-06-12
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 MicrosoftEdgeUpdateSetup lure executable spawning PowerShell. The ClearFake fake-update campaign delivers a spoofed Edge updater that launches PowerShell to fetch and run its next stage, an execution chain that legitimate browser updates do not produce.

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Suspicious Edge Update Setup Spawning PowerShell via ClearFake
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.