Techniques › T1030 › AN0597
AN0597 Analytic 0597
Linux · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Outbound connections from non-network-facing processes repeatedly send similarly sized payloads within uniform time intervals.</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 |
|---|---|---|
| auditd:SYSCALL | connect/sendto | DC0082 Network Connection Creation |
| NSM:Flow | Outbound Network Flow | DC0078 Network Traffic Flow |
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 |
|---|---|
ProcessNetworkBaseline | Whitelist of typical binaries expected to generate outbound connections (e.g., wget, curl) |
PayloadLengthVariance | Deviation threshold to consider data 'fixed size' (e.g., ±5% size delta) |
RepeatFrequencyThreshold | Number of observed transfers per minute/hour that signals anomalous repetition |