Techniques › T1566.001 › AN0656
AN0656 Analytic 0656
Linux · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Phishing attachments executed on Linux systems are detected by linking email logs to file creation in mail directories and subsequent suspicious process execution. Look for unexpected binaries or scripts spawned from user mail directories and anomalous outbound network activity.</p>
- Detects
- T1566.001 Spearphishing Attachment
- Part of
- DET0236 Detection Strategy for Spearphishing Attachment across OS 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 email attachments logged from MTAs with suspicious metadata | DC0038 Application Log Content |
| auditd:SYSCALL | execve: Execution of files saved in mail or download directories | DC0032 Process Creation |
| NSM:Flow | Outbound traffic from suspicious new processes post-attachment execution | DC0078 Network Traffic Flow |
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 |
|---|---|
AttachmentStoragePaths | Monitored directories for email attachments (e.g., /var/mail, ~/Maildir, ~/Downloads). |
ScriptInterpreters | List of interpreters to monitor when spawned by mail clients (e.g., bash, python, perl). |
KEV CVEs whose mapped technique this analytic detects
| CVE | Vendor / product | State |
|---|---|---|
| CVE-2013-0640 | Adobe Reader and Acrobat | Mapped |
| CVE-2017-11292 | Adobe Flash Player | Mapped |
| CVE-2017-11882 | Microsoft Office | Mapped |
| CVE-2022-41033 | Microsoft Windows COM+ Event System Service | Mapped |
| CVE-2023-2868 | Barracuda Networks Email Security Gateway (ESG) Appliance | Mapped |
| CVE-2025-0411 | 7-Zip 7-Zip | Mapped |
| CVE-2025-33053 | Microsoft Windows | Mapped |