Suspicious Font File Passed as Argument to Script Interpreter via Lua Loader (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 TTF Trap loader in which a WScript or CScript host launches a bundled Lua or AutoIt interpreter and passes a file with a .ttf extension as the script to execute. Legitimate font files are never executed as interpreter scripts. This masquerade of a loader script as a font is characteristic of the campaign.

Reporting behind it

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Suspicious Font File Passed as Argument to Script Interpreter via Lua Loader (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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