Techniques › T1499.003 › AN1166
AN1166 Analytic 1166
Linux · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Automated scripts or repeated CLI/API requests that trigger application backends to consume high CPU or memory (e.g., Apache/PHP, MySQL, mail servers), resulting in syslog errors and excessive process spawning.</p>
- Detects
- T1499.003 Application Exhaustion Flood
- Part of
- DET0415 Application Exhaustion Flood Detection Across Platforms
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 | DC0032 Process Creation |
| linux:syslog | Error/warning logs from services indicating load spike or worker exhaustion | DC0038 Application Log Content |
| NSM:Flow | Sustained abnormal inbound request rate targeting application ports (e.g., 80/443/25) | 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 |
|---|---|
SyslogErrorRate | Defines number of critical errors in logs within time window. |
PortRequestSpikeThreshold | Spike rate on monitored service port triggering alert. |
ProcessSpawnRate | Rate of process creation that may overwhelm the system. |