text code block:from logs-gcp.audit-* metadata _id, _index, _version | where data_stream.dataset == "gcp.audit" and service.name == "k8s.io" and client.user.email is not null and source.ip is not null and to_string(source.ip) != "127.0.0.1" and to_string(source.ip) != "::1" and client.user.email != "system:anonymous" and client.user.email != "system:unauthenticated" and gcp.audit.resource_name != "readyz" and gcp.audit.resource_name != "livez" and gcp.audit.resource_name != "healthz" and gcp.audit.resource_name != "version" | stats Esql.document_count = count(), Esql.event_outcome_count_distinct = count_distinct(event.outcome), Esql.event_action_count_distinct = count_distinct(event.action), Esql.gcp_audit_resource_name_count_distinct = count_distinct(gcp.audit.resource_name), Esql.earliest_timestamp = min(@timestamp), Esql.latest_timestamp = max(@timestamp), Esql.event_action_values = values(event.action), Esql.event_outcome_values = values(event.outcome), Esql.gcp_audit_resource_name_values = values(gcp.audit.resource_name), Esql.user_agent_original_values = values(user_agent.original) by client.user.email, source.ip | where Esql.event_outcome_count_distinct == 2 and Esql.event_action_count_distinct > 5 and Esql.gcp_audit_resource_name_count_distinct > 3 and Esql.document_count < 75 | keep Esql.*, client.user.email, source.ip
Install detection rules in Elastic Security
Detect GKE Endpoint Permission Enumeration 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).