Isai
67 lines
2.5 KiB
TOML
67 lines
2.5 KiB
TOML
[metadata]
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creation_date = "2022/05/17"
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integration = "kubernetes"
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maturity = "production"
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min_stack_comments = "New fields added to Kubernetes Integration"
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min_stack_version = "8.4.0"
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updated_date = "2022/10/03"
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[rule]
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author = ["Elastic"]
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description = """
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This rule detects a user attempt to establish a shell session into a pod using the 'exec' command. Using the 'exec'
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command in a pod allows a user to establish a temporary shell session and execute any process/commands in the pod. An
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adversary may call bash to gain a persistent interactive shell which will allow access to any data the pod has
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permissions to, including secrets.
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"""
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false_positives = [
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"""
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An administrator may need to exec into a pod for a legitimate reason like debugging purposes. Containers built from
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Linux and Windows OS images, tend to include debugging utilities. In this case, an admin may choose to run commands
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inside a specific container with kubectl exec ${POD_NAME} -c ${CONTAINER_NAME} -- ${CMD} ${ARG1} ${ARG2} ...
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${ARGN}. For example, the following command can be used to look at logs from a running Cassandra pod: kubectl exec
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cassandra --cat /var/log/cassandra/system.log . Additionally, the -i and -t arguments might be used to run a shell
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connected to the terminal: kubectl exec -i -t cassandra -- sh
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""",
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]
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index = ["logs-kubernetes.*"]
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language = "kuery"
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license = "Elastic License v2"
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name = "Kubernetes User Exec into Pod"
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note = """## Setup
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The Kubernetes Fleet integration with Audit Logs enabled or similarly structured data is required to be compatible with this rule."""
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references = [
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"https://kubernetes.io/docs/tasks/debug/debug-application/debug-running-pod/",
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"https://kubernetes.io/docs/tasks/debug/debug-application/get-shell-running-container/",
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]
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risk_score = 47
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rule_id = "14de811c-d60f-11ec-9fd7-f661ea17fbce"
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severity = "medium"
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tags = ["Elastic", "Kubernetes", "Continuous Monitoring", "Execution"]
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timestamp_override = "event.ingested"
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type = "query"
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query = '''
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event.dataset : "kubernetes.audit_logs"
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and kubernetes.audit.annotations.authorization_k8s_io/decision:"allow"
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and kubernetes.audit.verb:"create"
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and kubernetes.audit.objectRef.resource:"pods"
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and kubernetes.audit.objectRef.subresource:"exec"
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'''
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[[rule.threat]]
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framework = "MITRE ATT&CK"
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[[rule.threat.technique]]
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id = "T1609"
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name = "Container Administration Command"
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reference = "https://attack.mitre.org/techniques/T1609/"
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[rule.threat.tactic]
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id = "TA0002"
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name = "Execution"
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reference = "https://attack.mitre.org/tactics/TA0002/"
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