Suspicious Host Firewall Flush via iptables (via process_creation)

ATT&CK techniques

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects a full flush of iptables rules on a Linux host, an impairment step seen in the ChaosDB walkthrough to remove network restrictions before further activity. Clearing all firewall rules can open unmonitored paths for tooling and exfiltration. Because admins occasionally flush rules the rule is heuristic and should be reviewed in context.

Reporting behind it

Related detections9 linkedT1686 — drag to rearrange

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Suspicious Host Firewall Flush via iptables (via process_creation)

Pivot detection · T1686 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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