Techniques › T1071.004 › AN1122
AN1122 Analytic 1122
Linux · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Detects local daemons or scripts generating outbound DNS queries with long or frequent subdomains, indicative of DNS tunneling via tools like
iodine, dnscat2, or dig from cronjobs or reverse shells.</p>- Detects
- T1071.004 DNS
- Part of
- DET0400 Behavioral Detection of DNS Tunneling and Application Layer Abuse
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 | execve | DC0032 Process Creation |
| NSM:Flow | dns.log | 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 |
|---|---|
SubdomainEntropyScore | Detects encoded payloads or randomness in DNS labels |
DaemonAllowList | Allowlisted system daemons expected to perform frequent lookups |