Techniques › T1114.003 › AN1591
AN1591 Analytic 1591
Office Suite · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Creation of email forwarding/redirect rules in Exchange Online via New-InboxRule or transport rule cmdlets, including auto-forwarding address field usage.</p>
- Detects
- T1114.003 Email Forwarding Rule
- Part of
- DET0576 Email Forwarding Rule Abuse 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 |
|---|---|---|
| m365:unified | New-InboxRule, Set-InboxRule | DC0070 Cloud Service Metadata |
| m365:messagetrace | X-MS-Exchange-Organization-AutoForwarded | 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 |
|---|---|
ForwardingSMTPAddress | Destination domain may vary; commonly tuned per org policies. |
ActorId | Differentiate service/admin users vs standard user population. |