FalseFont Masqueraded System Binary Execution from User Profile Directory (via process_creation)

ATT&CK techniques

Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
- T1036.005Match Legitimate Resource Name or Location
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects the FalseFont backdoor components broker.exe and host.exe executing from AppData user-profile directories where they masquerade as legitimate Windows helper processes. Adversaries run these renamed implants from writable folders to blend with system activity, making detection useful for surfacing the espionage backdoor at runtime.

Reporting behind it

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FalseFont Masqueraded System Binary Execution from User Profile Directory (via process_creation)

Pivot detection · T1036.005 · 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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