Files
sigma-rules/rules/linux
Samirbous 83406d8ce1 [New/Tuning] Direct Kubelet API Access rules (#5996)
* [New/Tuning] Direct Kubelet API Access rules

- tuned existing rule for D4C to bump-up severity to high (low FP and very susp behavior) + added 10255 port and wss url.
- duplicated same rule logic for auditd/endpoint compatibility for both 10250 port in args and kubeletctl exec.
- added a new one using network event vs process argument for more resilience.

* ++

* Update discovery_potential_direct_kubelet_access_via_process_args.toml

* Update and rename discovery_potential_direct_kubelet_access_via_process_args.toml to lateral_movement_direct_kubelet_access_via_process_args.toml

* Update rules/linux/lateral_movement_direct_kubelet_access_via_process_args.toml

Co-authored-by: Isai <59296946+imays11@users.noreply.github.com>

* Update rules/linux/discovery_potential_kubeletctl_execution.toml

Co-authored-by: Isai <59296946+imays11@users.noreply.github.com>

* Update discovery_potential_kubeletctl_execution.toml

* Update lateral_movement_kubelet_api_connection_attempt_internal_ip.toml

* Apply suggestion from @Aegrah

Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>

* Apply suggestion from @Aegrah

Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>

---------

Co-authored-by: Isai <59296946+imays11@users.noreply.github.com>
Co-authored-by: Ruben Groenewoud <78494512+Aegrah@users.noreply.github.com>
2026-05-04 22:18:23 +01:00
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