Techniques › T1534 › AN0151
AN0151 Analytic 0151
Office Suite · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Outlook or Word used to forward suspicious internal attachments with macro content. Defender observes attachment forwarding, auto-opening behaviors, or macro prompt interactions.</p>
- Detects
- T1534 Internal Spearphishing
- Part of
- DET0054 Internal Spearphishing via Trusted Accounts
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 | SendOnBehalf, MessageSend, AttachmentPreviewed | DC0038 Application Log Content |
| WinEventLog:Security | EventCode=4103, 4104, 4105, 4106 | DC0064 Command Execution |
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 |
|---|---|
MacroExecutionWindow | Timing between mail open and macro invocation |
AttachmentNameHeuristics | Patterns of known internal spearphishing lures (e.g., invoice, HR_policy) |