Malicious ServiceDll Hijack Of FontCacheSvc via Registry Set

ATT&CK techniques

Persistence → Priv Esc

Recon
Resource Dev
Initial Access
Execution
Persistence
- T1543.003Windows Service
Priv Esc
- T1543.003Windows Service
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects the ServiceDll value of the Font Cache service being pointed at apibridge.dll. ToddyCat hijacks the svchost-hosted FontCacheSvc service to load its malicious apibridge.dll for stealthy persistence, masquerading as a legitimate system service.

Reporting behind it

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Malicious ServiceDll Hijack Of FontCacheSvc via Registry Set

Pivot detection · T1543.003 · 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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