Suspicious Access to Chrome Encrypted Preference MAC Registry Values (via registry_set)

ATT&CK techniques

Persistence → Cred Access

Recon
Resource Dev
Initial Access
Execution
Persistence
- T1112Modify Registry
Priv Esc
Defense Evasion
- T1112Modify Registry
Cred Access
- T1555.003Credentials from Web Browsers
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects registry activity touching Chrome PreferenceMACs values, the integrity-hash store that StilachiRAT reads while harvesting browser credentials and manipulating Chrome state during its cryptocurrency-theft workflow. Adversaries interact with these values to validate or bypass Chrome preference protections when stealing saved logins, so unexpected access to PreferenceMACs is an indicator of browser credential theft.

Reporting behind it

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Suspicious Access to Chrome Encrypted Preference MAC Registry Values (via registry_set)

Pivot detection · T1112 · 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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