Techniques › T1030 › AN0596
AN0596 Analytic 0596
Windows · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Adversary uses a process to establish outbound connections that transmit uniform packet sizes at a consistent interval, avoiding threshold-based network alerts.</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 |
|---|---|---|
| WinEventLog:Sysmon | EventCode=3, 22 | DC0082 Network Connection Creation |
| NSM:Flow | NetFlow/sFlow/PCAP | 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 |
|---|---|
PacketSizeThreshold | Minimum repetitive size in bytes to consider as anomalous behavior (e.g., 512B or 1024B) |
IntervalRepeatWindow | Timeframe over which repeated, evenly spaced transfers are flagged |
KnownServicePorts | Common ports expected to exhibit protocol behavior; outliers flagged if not matching expected usage |