Techniques › T1567 › AN1514
AN1514 Analytic 1514
SaaS · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Abnormal API calls from user accounts invoking file upload endpoints outside normal baselines (M365, Google Drive, Box). Defender perspective: monitor unified audit logs for elevated frequency of Upload, Create, or Copy operations from compromised accounts.</p>
- Detects
- T1567 Exfiltration Over Web Service
- Part of
- DET0548 Detection Strategy for Exfiltration Over Web Service
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 | FileUploaded or FileCopied events | DC0038 Application Log Content |
| saas:box | API calls exceeding baseline thresholds | DC0085 Network Traffic 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 |
|---|---|
APICallThreshold | Maximum number of API calls per user/session before triggering alert. |
UserBaselineProfiles | Baseline normal data transfer patterns by user/role. |
KEV CVEs whose mapped technique this analytic detects
| CVE | Vendor / product | State |
|---|---|---|
| CVE-2022-41082 | Microsoft Exchange Server | Mapped |
| CVE-2024-11182 | MDaemon Email Server | Mapped |
| CVE-2025-54309 | CrushFTP CrushFTP | Mapped |