Malicious Chrome Relaunch Hijack by FlutterShell Backdoor on macOS (via process_creation)

PremiumReviewedSigma · High · v1
Product
macos
Category
process_creation
Author
HuntRule
Published
2026-05-01
Updated
2026-08-28

ATT&CK techniques

Execution → Persistence
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Priv Esc

  5. Defense Evasion

  6. Cred Access

  7. Discovery

  8. Lateral Movement

  9. Collection

  10. C2

  11. Exfiltration

  12. Impact

What it detects

This rule detects Google Chrome being relaunched with restore-session arguments pointing at the sinterfumesco.com domain, a browser-hijack step of the FlutterShell backdoor from Operation FlutterBridge. The malware kills and restarts Chrome to redirect the victim to attacker-controlled search infrastructure.

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Pivot detection · T1059 · 9 related

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