Techniques › T1566 › AN0189
AN0189 Analytic 0189
Linux · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Monitor for malicious payload delivery through phishing where attachments or URLs in email clients (e.g., Thunderbird, mutt) result in unusual file creation or outbound network connections. Focus on correlation between mail logs, file writes, and execution activity.</p>
- Detects
- T1566 Phishing
- Part of
- DET0070 Detection Strategy for Phishing 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 |
|---|---|---|
| Application:Mail | Inbound messages with anomalous headers, spoofed SPF/DKIM failures | DC0038 Application Log Content |
| auditd:SYSCALL | execve: Execution of scripts or binaries sourced from mail directories (/var/mail, ~/Maildir) | DC0032 Process 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 |
|---|---|
MonitoredMailPaths | System or user directories where emails/attachments are stored. |
AttachmentHashBaseline | Known good hashes for common business document templates. |
KEV CVEs whose mapped technique this analytic detects
| CVE | Vendor / product | State |
|---|---|---|
| CVE-2021-40449 | Microsoft Windows | Mapped |
| CVE-2022-34713 | Microsoft Windows | Mapped |
| CVE-2022-41128 | Microsoft Windows | Mapped |
| CVE-2023-36884 | Microsoft Windows | Stale |
| CVE-2024-11182 | MDaemon Email Server | Mapped |
| CVE-2025-24054 | Microsoft Windows | Mapped |