Techniques › T1553.002 › AN0644
AN0644 Analytic 0644
macOS · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Monitors Gatekeeper, spctl, and unified log entries for binaries executed with unexpected or untrusted signatures. Correlates file metadata changes with process launches where signature validation is skipped, altered, or fails but the process still executes.</p>
- Detects
- T1553.002 Code Signing
- Part of
- DET0230 Detect Suspicious or Malicious Code Signing Abuse
Log sources and channels
Exactly as MITRE states them in x_mitre_log_source_references. Where a channel is vague, it is vague in the source; kevmap does not tidy it.
| Log source | Channel | Data component |
|---|---|---|
| macos:unifiedlog | Code signing verification failures or bypassed trust decisions | DC0059 File Metadata |
| macos:unifiedlog | Execution of binaries with unsigned or anomalously signed certificates | DC0032 Process Creation |
Mutable elements
Parameters MITRE marks as environment-specific. These are the knobs you are expected to tune; they are why an analytic is not a rule.
| Field | Description |
|---|---|
DeveloperIDAllowList | Maintain list of expected Developer IDs to minimize false positives from enterprise apps |
TimeWindow | Correlates file signature changes with subsequent executions |