Techniques › T1667 › AN1008
AN1008 Analytic 1008
Windows · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Detect abnormally high volume of inbound email messages or repetitive attachments being delivered to a single mailbox within a short time window. Defenders should look for anomalous spikes in message counts and repetitive attachment file creation events correlated with targeted users.</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 |
|---|---|---|
| m365:unified | Send/Receive: Unusual spikes in inbound messages to a single recipient | DC0038 Application Log Content |
| WinEventLog:Sysmon | EventCode=11 | DC0039 File 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 |
|---|---|
TimeWindow | Defines the aggregation interval (e.g., 5 minutes, 1 hour) for detecting spikes in inbound email traffic. |
RecipientThreshold | Defines maximum number of acceptable messages per user before triggering anomaly. |
AttachmentSizeThreshold | Defines the size threshold for repetitive attachments to be flagged. |