Techniques › T1573 › AN0761
AN0761 Analytic 0761
macOS · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Applications or launchd jobs initiating encrypted TLS traffic to rare external hosts. Defender observes unified logs showing ssl/TLS API calls by processes not baseline-approved, and payload entropy suggesting encrypted C2 sessions.</p>
- Detects
- T1573 Encrypted Channel
- Part of
- DET0273 Detection Strategy for Encrypted Channel across OS Platforms
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 | Encrypted session initiation by unexpected binary | DC0085 Network Traffic Content |
| macos:unifiedlog | Process invoking SSL routines from Security framework | 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 |
|---|---|
DoHResolvers | Known legitimate DoH endpoints to reduce false positives. |
PayloadEntropyThreshold | High-entropy traffic deviations used to detect concealed channels. |