Suspicious Firewall Flush via iptables in Kinsing Intrusion

PremiumReviewedSigma · Low · v1
Product
linux
Category
process_creation
Author
HuntRule
Published
2026-10-25
Updated
2026-10-25

ATT&CK techniques

  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Cred Access

  9. Discovery

  10. Lateral Movement

  11. Collection

  12. C2

  13. Exfiltration

  14. Impact

What it detects

This rule detects iptables being run with the flush flag to clear all firewall rules. Kinsing flushes iptables to remove competing miner blocks and to keep its own C2 and mining traffic unimpeded, an impair-defenses action that can also occur during legitimate administration.

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Suspicious Firewall Flush via iptables in Kinsing Intrusion
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.