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Amazon EKS Kubernetes Pod scan detection

The following analytic detects unauthenticated requests made against the Kubernetes Pods API, indicating potential unauthorized access attempts. It leverages the `aws_cloudwatchlogs_eks` data source, filtering for events where `user.username` is "system:anonymous", `verb` is "list", and `objectRef.resource` is "pods", with `requestURI` set to "/api/v1/pods". This activity is significant as it may signal attempts to access sensitive resources or execute unauthorized commands within the Kubernetes environment. If confirmed malicious, such access could lead to data compromise, unauthorized command execution, or lateral movement within the cluster.

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Detection Logic

`aws_cloudwatchlogs_eks` "user.username"="system:anonymous" verb=list objectRef.resource=pods requestURI="/api/v1/pods"
| rename source as cluster_name sourceIPs{} as src_ip
| stats count min(_time) as firstTime max(_time) as lastTime values(responseStatus.reason) values(responseStatus.code) values(userAgent) values(verb) values(requestURI)
    BY src_ip cluster_name user.username
       user.groups{}
| `security_content_ctime(lastTime)`
| `security_content_ctime(firstTime)`
| `amazon_eks_kubernetes_pod_scan_detection_filter`

False Positives

⚠ Not all unauthenticated requests are malicious, but frequency, UA and source IPs and direct request to API provide context.

Field Validations

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