text code block:sequence with maxspan=1s [process where host.os.type == "linux" and event.type == "start" and event.action == "exec" and process.interactive == true and container.id like "*" and /* Covered by the rule "Direct Interactive Kubernetes API Request by Common Utilities" */ not ( process.name in ("wget", "curl", "openssl", "socat", "ncat", "kubectl") or ( /* Account for tools that execute utilities as a subprocess, in this case the target utility name will appear as a process arg */ process.name in ("bash", "dash", "sh", "tcsh", "csh", "zsh", "ksh", "fish", "busybox") and process.args in ( "wget", "/bin/wget", "/usr/bin/wget", "/usr/local/bin/wget", "ssl_client", "/bin/ssl_client", "/usr/bin/ssl_client", "/usr/local/bin/ssl_client", "curl", "/bin/curl", "/usr/bin/curl", "/usr/local/bin/curl", "openssl", "/bin/openssl", "/usr/bin/openssl", "/usr/local/bin/openssl", "socat", "/bin/socat", "/usr/bin/socat", "/usr/local/bin/socat", "ncat", "/bin/ncat", "/usr/bin/ncat", "/usr/local/bin/ncat", "kubectl", "/bin/kubectl", "/usr/bin/kubectl", "/usr/local/bin/kubectl" ) and /* default exclusion list to not FP on default multi-process commands */ not process.args in ( "which", "/bin/which", "/usr/bin/which", "/usr/local/bin/which", "man", "/bin/man", "/usr/bin/man", "/usr/local/bin/man", "chmod", "/bin/chmod", "/usr/bin/chmod", "/usr/local/bin/chmod", "chown", "/bin/chown", "/usr/bin/chown", "/usr/local/bin/chown" ) ) or /* General exclusions for utilities that are not typically used for Kubernetes API requests */ process.name in ("sleep", "head", "tail") )] by orchestrator.resource.name [any where event.dataset == "kubernetes.audit_logs" and kubernetes.audit.stage in ("ResponseStarted","ResponseComplete") and kubernetes.audit.verb in ("get", "list", "watch", "create", "patch", "update") and ( kubernetes.audit.objectRef.resource in ( "pods", "secrets", "serviceaccounts", "configmaps", "roles", "rolebindings", "clusterroles", "clusterrolebindings", "deployments", "daemonsets", "statefulsets", "jobs", "cronjobs", "nodes", "namespaces", "selfsubjectaccessreviews", "selfsubjectrulesreviews", "subjectaccessreviews" ) or ( kubernetes.audit.objectRef.resource == "pods" and kubernetes.audit.objectRef.subresource in ("exec", "attach", "portforward", "log") ) ) ] by `kubernetes.audit.user.extra.authentication.kubernetes.io/pod-name`
Install detection rules in Elastic Security
Detect Direct Interactive Kubernetes API Request by Unusual Utilities in the Elastic Security detection engine by installing this rule into your Elastic Stack.
To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(external, opens in a new tab or window).