Techniques › T1499.001 › AN1012
AN1012 Analytic 1012
Windows · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Burst of incomplete TCP handshakes (e.g., SYN floods) or uncorrelated ACK packets targeting the state table resulting in OS resource exhaustion.</p>
- Detects
- T1499.001 OS Exhaustion Flood
- Part of
- DET0356 Endpoint DoS via OS Exhaustion Flood Detection Strategy
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=1 | DC0032 Process Creation |
| WinEventLog:Microsoft-Windows-TCPIP | Connection queue overflow or failure to allocate TCP state object | DC0018 Host Status |
| NSM:Firewall | High rate of inbound TCP SYN or ACK packets with missing 3-way handshake completion | 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 |
|---|---|
TimeWindow | Threshold for burst traffic over short period (e.g., 30s - 2min) |
ConnectionRateThreshold | SYN/ACK packet rate threshold that triggers investigation |
ProcessParentCheck | Whether parent process of flooding tool is a known admin shell or unexpected context |