Techniques › T1573 › AN0760
AN0760 Analytic 0760
Linux · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Processes like curl, wget, python, socat, or custom binaries initiating TLS/SSL sessions to non-standard destinations. Defender sees abnormal syscalls for connect(), loading of libssl libraries, and persistent outbound encrypted traffic from daemons not normally communicating externally.</p>
- Detects
- T1573 Encrypted Channel
- Part of
- DET0273 Detection Strategy for Encrypted Channel 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 |
|---|---|---|
| auditd:SYSCALL | socket/connect with TLS context by unexpected process | DC0082 Network Connection Creation |
| linux:syslog | system daemons initiating TLS sessions outside expected services | DC0038 Application Log Content |
| linux:osquery | Processes linked with libssl or crypto libraries making outbound connections | 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 |
|---|---|
WhitelistedDaemons | Legitimate system services expected to use TLS (e.g., package updates). |
CertificateAuthorities | Trusted CAs; flag self-signed or unrecognized certs. |