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Google Cloud Kubernetes CronJob

Identifies when a Google Cloud Kubernetes CronJob runs in Azure Cloud. Kubernetes Job is a controller that creates one or more pods and ensures that a specified number of them successfully terminate. Kubernetes Job can be used to run containers that perform finite tasks for batch jobs. Kubernetes CronJob is used to schedule Jobs. An Adversary may use Kubernetes CronJob for scheduling execution of malicious code that would run as a container in the cluster.

Detection Query

selection:
  gcp.audit.method_name:
    - io.k8s.api.batch.v*.Job
    - io.k8s.api.batch.v*.CronJob
condition: selection

Author

Austin Songer @austinsonger

Created

2021-11-22

Data Sources

gcpgcp.audit

Platforms

gcp

Tags

attack.persistenceattack.privilege-escalationattack.execution
Raw Content
title: Google Cloud Kubernetes CronJob
id: cd3a808c-c7b7-4c50-a2f3-f4cfcd436435
status: test
description: |
    Identifies when a Google Cloud Kubernetes CronJob runs in Azure Cloud. Kubernetes Job is a controller that creates one or more pods and ensures that a specified number of them successfully terminate.
    Kubernetes Job can be used to run containers that perform finite tasks for batch jobs. Kubernetes CronJob is used to schedule Jobs.
    An Adversary may use Kubernetes CronJob for scheduling execution of malicious code that would run as a container in the cluster.
references:
    - https://cloud.google.com/kubernetes-engine/docs
    - https://kubernetes.io/docs/concepts/workloads/controllers/cron-jobs/
    - https://kubernetes.io/docs/concepts/workloads/controllers/job/
author: Austin Songer @austinsonger
date: 2021-11-22
modified: 2022-12-25
tags:
    - attack.persistence
    - attack.privilege-escalation
    - attack.execution
logsource:
    product: gcp
    service: gcp.audit
detection:
    selection:
        gcp.audit.method_name:
            - io.k8s.api.batch.v*.Job
            - io.k8s.api.batch.v*.CronJob
    condition: selection
falsepositives:
    - Google Cloud Kubernetes CronJob/Job may be done by a system administrator.
    - If known behavior is causing false positives, it can be exempted from the rule.
level: medium