Techniques › T1030 › AN0598
AN0598 Analytic 0598
macOS · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Processes on macOS initiate external connections that consistently transmit data in fixed sizes using LaunchAgents or unexpected users.</p>
- Detects
- T1030 Data Transfer Size Limits
- Part of
- DET0213 Detection Strategy for Data Transfer Size Limits and Chunked Exfiltration
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 | com.apple.network | DC0078 Network Traffic Flow |
| macos:endpointsecurity | ES_EVENT_TYPE_NOTIFY_CONNECT | DC0082 Network Connection 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 |
|---|---|
LaunchdJobContext | Agent context in which transfer occurs (e.g., user/privileged) |
TransferSizeMedian | Used to define what constitutes 'fixed size' chunks |
TransferProtocolOutlier | Detect if protocol usage deviates from common apps for given destination |