Techniques › T1090.004 › AN0565
AN0565 Analytic 0565
Linux · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Applications such as
curl, wget, or custom binaries initiate HTTPS connections where the TLS SNI is mismatched or absent while HTTP Host targets CDN-available C2 endpoints.</p>- Detects
- T1090.004 Domain Fronting
- Part of
- DET0196 Domain Fronting Behavior via Mismatched TLS SNI and HTTP Host Headers
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 |
|---|---|---|
| NSM:Flow | ssl.log + http.log | DC0085 Network Traffic Content |
| auditd:SYSCALL | execve | 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 |
|---|---|
SNIFieldAbsent | Detect TLS sessions where SNI is empty—'domainless' fronting. |
AllowedTools | Environmental tuning for known binaries using alternate SNI for testing (e.g., API tests). |
ProcessContext | Enrich command-line arguments or parent-child lineage to detect abuse. |