Techniques › T1114 › AN1312
AN1312 Analytic 1312
Office Suite · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Correlates unusual auto-forwarding rule creation via Exchange Web Services or Outlook rules engine, presence of X-MS-Exchange-Organization-AutoForwarded headers, and logon session anomalies from abnormal IPs.</p>
- Detects
- T1114 Email Collection
- Part of
- DET0476 Email Collection via Local Email Access and Auto-Forwarding Behavior
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 | Set-Mailbox, New-InboxRule | DC0064 Command Execution |
| m365:exchange | MessageTrace logs | DC0038 Application Log Content |
| azure:ad | SignInEvents | DC0067 Logon Session Creation |
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 |
|---|---|
UserAgentList | Restrict rules from non-browser agents |
ExternalSMTPDomainList | Allow listing for org-sanctioned forwarding domains |
TimeWindow | Time delta between rule creation and suspicious sign-in |
KEV CVEs whose mapped technique this analytic detects
| CVE | Vendor / product | State |
|---|---|---|
| CVE-2020-0688 | Microsoft Exchange Server | Mapped |
| CVE-2024-27443 | Synacor Zimbra Collaboration Suite (ZCS) | Mapped |
| CVE-2024-42009 | Roundcube Webmail | Mapped |