Techniques › T1001.001 › AN0031
AN0031 Analytic 0031
Linux · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Outbound traffic with anomalous payload sizes and patterns from non-networking processes, often observed via packet inspection or connection logs.</p>
- Detects
- T1001.001 Junk Data
- Part of
- DET0011 Detecting Junk Data in C2 Channels via Behavioral Analysis
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 | execve network tools | DC0032 Process Creation |
| NSM:Flow | TCP session tracking | DC0085 Network Traffic Content |
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 |
|---|---|
EntropyScore | Adjust based on expected entropy of typical outbound data. |
ProcessWhitelist | Exclude known good binaries that generate high network output. |
DataRatioThreshold | Minimum ratio of bytes_sent to bytes_received. |