Techniques › T1555.002 › AN0156
AN0156 Analytic 0156
macOS · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Detects suspicious memory access attempts targeting the
securityd process. Observes tools invoking process memory read operations (e.g., ptrace, task_for_pid) against securityd. Correlates with anomalous parent process lineage, root privilege escalation, or repeated unauthorized attempts.</p>- Detects
- T1555.002 Securityd Memory
- Part of
- DET0057 Detect Suspicious Access to securityd Memory for Credential Extraction
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 | ptrace or task_for_pid | DC0035 Process Access |
| macos:unifiedlog | execution of memory inspection tools (lldb, gdb, osqueryi) | 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 |
|---|---|
AllowedDebuggers | List of authorized debugging tools permitted in dev/test environments |
TimeWindow | Correlation period between memory inspection and Keychain API access |
PrivilegedUsers | Expected set of admin accounts with legitimate debugging permissions |