Techniques › T1667 › AN1009
AN1009 Analytic 1009
Linux · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Monitor mail server logs (e.g., Postfix, Sendmail) for excessive connections or inbound message counts targeting a single recipient. Correlate with repetitive attachment storage in /var/mail or /var/spool/mail directories.</p>
- Detects
- T1667 Email Bombing
- Part of
- DET0355 Detection Strategy for Email Bombing
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 | File creation events in /var/mail or /var/spool/mail exceeding baseline thresholds | DC0039 File Creation |
| Application:Mail | High-frequency inbound mail activity to a specific recipient address | DC0038 Application Log 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 |
|---|---|
MailVolumeThreshold | Tunable value for the maximum acceptable emails per minute per user. |
AttachmentPatternList | List of suspicious attachment extensions that may be abused for repetitive delivery. |