Techniques › T1684.001 › AN0793
AN0793 Analytic 0793
Linux · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Monitor mail server logs (Postfix, Sendmail, Exim) for anomalous From headers mismatching authenticated SMTP identities. Detect abnormal relay attempts, spoofed envelope-from values, or large-scale outbound campaigns targeting internal users.</p>
- Detects
- T1684.001 Impersonation
- Part of
- DET0286 Detection Strategy for Impersonation
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: Processes executing sendmail/postfix with forged headers | DC0064 Command Execution |
| Application:Mail | Mismatch between authenticated username and From header in email | 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 |
|---|---|
KnownRelayHosts | Filter trusted relays or automated notification systems from impersonation alerts. |