Suspicious Microsoft Edge Native Messaging Host Registration via UNC6692

ATT&CK techniques

Persistence

Recon
Resource Dev
Initial Access
Execution
Persistence
- T1176Software Extensions
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects registration of a Microsoft Edge native messaging host, the mechanism UNC6692 uses to bridge its sideloaded extension to a local Python messaging host. This channel lets the browser extension execute native code and communicate with attacker tooling. New native messaging host registrations should be validated against known browser integrations.

Reporting behind it

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Suspicious Microsoft Edge Native Messaging Host Registration via UNC6692

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.

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