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Potential Direct Kubelet Access via Process Arguments

Detects potential direct Kubelet API access attempts on Linux by identifying process executions whose arguments contain URLs targeting Kubelet ports (10250/10255). Adversaries may probe or access Kubelet endpoints to…

Description

Detects potential direct Kubelet API access attempts on Linux by identifying process executions whose arguments contain URLs targeting Kubelet ports (10250/10255). Adversaries may probe or access Kubelet endpoints to enumerate pods, fetch logs, or attempt remote execution, which can enable discovery and lateral movement in Kubernetes environments.

Detection logic

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Detection requirements

Platform
ContainersESXiIaaSIdentity ProviderLinuxmacOSNetwork DevicesOffice SuiteSaaSWindows

The rule states no platform. This is derived from the 3 ATT&CK techniques it maps to.

Log source category
event_index

Known benign triggers

  • Cluster operators and node diagnostics may legitimately probe Kubelet endpoints (for example /pods or /metrics) during troubleshooting. Validate the initiating user, session, and whether the target node/IP is expected for the host.

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