Techniques › T1686 › AN0407
AN0407 Analytic 0407
Linux · attack.mitre.org · ATT&CK Enterprise v19.2
<p>Detection of iptables, nftables, or firewalld rule modifications. Correlation of sudden drops in active firewall rules with suspicious processes suggests adversarial evasion.</p>
- Detects
- T1686 Disable or Modify System Firewall
- Part of
- DET0145 Detection of Disabled or Modified System Firewalls 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 | execve: iptables, nft, firewall-cmd modifications | DC0064 Command Execution |
| linux:osquery | execution of known firewall binaries | 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 |
|---|---|
AllowedScripts | Baseline admin scripts allowed to make firewall modifications. |