Techniques › T1555.001 › AN1112
AN1112 Analytic 1112
macOS · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Detects suspicious access to macOS Keychain files and APIs. Observes processes invoking the 'security' utility or accessing Keychain databases directly, correlates these with abnormal parent process lineage or unexpected user context. Monitors attempts to dump, unlock, or read credential storage beyond normal application workflows.</p>
- Detects
- T1555.001 Keychain
- Part of
- DET0396 Detect Access to macOS Keychain for Credential Theft
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 | execution of security or osascript | DC0032 Process Creation |
| macos:unifiedlog | access or unlock attempt to keychain database | DC0021 OS API Execution |
| macos:unifiedlog | read access to ~/Library/Keychains/login.keychain-db | DC0055 File Access |
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 |
|---|---|
AllowedApplications | Whitelist of applications (e.g., Safari, Mail) normally permitted to access Keychain |
AlertThreshold | Number of failed keychain unlock attempts before raising an alert |
ParentProcessContext | Legitimate parent-child process relationships for security tool invocations |