Malicious Madgicx Plus Chrome Extension Identifiers on Disk

PremiumReviewedSigma · High · v1
Product
windows
Category
file_event
Author
HuntRule
Published
2026-09-13
Updated
2026-09-13

ATT&CK techniques

Persistence
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  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 filesystem artifacts referencing the malicious Chrome extension identifiers distributed in the Madgicx Plus campaign for session-token theft. Presence of these specific extension IDs on disk indicates installation of the credential-stealing browser extension.

Related detections9 linkedT1176 — drag to rearrange
Suspicious Browser Launch with Unpacked Extension Loaded via load-extension (via process_creation)
Malicious GenAI Browser Extension C2 and PAC Redirection (via proxy)
Suspicious Microsoft Edge Headless Launch with Unpacked Extension via SNOWBELT (via process_creation)
Suspicious Browser Extension Force-Install via Registry (via registry_set)
Suspicious Microsoft Edge Native Messaging Host Registration via UNC6692
Suspicious Browser Extension Sideload From a User Path (via process_creation)
Suspicious Chrome Remote Debugging Port for Browser Session Theft
Suspicious Microsoft Edge Unpacked Extension Load via UNC6692 Edgecution
Malicious Chrome Extension Sideload via --load-extension from User-Writable Path (via process_creation)
Malicious Madgicx Plus Chrome Extension Identifiers on Disk
Pivot detection · T1176 · 9 related

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