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Amazon Detective Supports Kubernetes Workloads on Amazon EKS for Security Investigations

In March 2020, we introduced Amazon Detective, a fully managed service that makes it easy to analyze, investigate, and quickly identify the root cause of potential security issues or suspicious activities.

Amazon Detective continuously extracts temporal events such as login attempts, API calls, and network traffic from Amazon GuardDutyAWS CloudTrail, and Amazon Virtual Private Cloud (Amazon VPC) Flow Logs into a graph model that summarizes the resource behaviors and interactions observed across your entire AWS environment. We have added new features such as AWS IAM Role session analysis, enhanced IP address analytics, Splunk integration, Amazon S3 and DNS finding types, and the support of AWS Organizations.

Customers are rapidly moving to containers to deploy Kubernetes workloads with Amazon Elastic Kubernetes Service (Amazon EKS). Its highly programmatic nature allows thousands of individual container deployments and millions of configuration changes to occur in seconds. To effectively secure EKS workloads, it is important to monitor container deployments and configurations that are captured in the form of EKS audit logs and to correlate activities to user activity and network traffic happening across AWS accounts.

Today we announce new capabilities in Amazon Detective to expand security investigation coverage for Kubernetes workloads running on Amazon EKS. When you enable this new feature, Amazon Detective automatically starts ingesting EKS audit logs to capture chronological API activity from users, applications, and the control plane in Amazon EKS for clusters, pods, container images, and Kubernetes subjects (Kubernetes users and service accounts).

Detective automatically correlates user activity using CloudTrail, and network activity using Amazon VPC Flow logs, without the need for you to enable, store, or retain logs manually. The service gleans key security information from these logs and retains them in a security behavioral graph database that enables fast cross-referenced access to twelve months of activity. Detective provides a data analysis and visualization layer purpose-built to answer common security questions backed by a behavioral graph database that allows you to quickly investigate potential malicious behavior associated with your EKS workloads.

You can rapidly respond to security issues rather than focusing on log management, operational systems, or ongoing security tooling maintenance. Detective’s EKS capabilities come with a free 30-day trial for all customers that allows you to ensure that the capabilities meet your needs and to fully understand the cost for the service on an ongoing basis.

Getting Started with Security Investigations for EKS Audit Logs
To get started, enable Amazon Detective with just a few clicks in the AWS Management Console. GuardDuty is a prerequisite of Amazon Detective. When you try to enable Detective, Detective checks whether GuardDuty has been enabled for your account. You must either enable GuardDuty or wait for 48 hours. This allows GuardDuty to assess the data volume that your account produces.

You can enable your account by attaching the AWS IAM policy or delegate it to an administrator of your organization. To learn more, refer to Setting up Detective in the AWS documentation.

To enable EKS support in Detective as an existing customer, navigate to the Settings menu in the left panel and select General. Under Optional source packages, enable EKS audit logs.

If you are a new customer of Detective, the EKS protection feature will be enabled by default. If you do not want to trial EKS audit logs right away, you can disable this feature within the first week of enabling Detective and preserve the full 30-day free trial period to use in the future.

Once enabled, Detective will begin monitoring the Kubernetes audit logs that are generated by Amazon EKS, extracting and correlating information for security usage. You do not need to enable any log sources or make any configuration changes to your existing EKS clusters or future deployments.

You can see recent monitoring results of your EKS clusters on the Summary page.

When you choose one of the EKS clusters, you will see the details of containers running in the cluster, Kubernetes API activities, and network activities that occurred on this resource around the scope time.

In the Overview tab, you also see details about all containers running in the cluster, including their pod, image and security context.

In the Kubernetes API activity tab, you can get an overview of the full API activities involving the EKS cluster. You can choose a time range to drill down based on specific API methods within the EKS cluster. When you select a specific time, you can see API subjects, IP addresses, and the number of API calls by the success, failure, unauthorized, or forbidden state.

You can also see details of newly observed Kubernetes API calls  inside this cluster for the first time and subjects with increased volume that happened inside the cluster.

Enabling GuardDuty EKS Protection
In January 2022, Amazon GuardDuty expanded coverage to EKS cluster activity to identify malicious or suspicious behavior that represents potential threats to container workloads.

When the optional GuardDuty EKS Protection is enabled, GuardDuty will continuously monitor your EKS deployments and alert you to threats detected in your workloads. You can view and investigate these security findings in Detective.

With Detective for EKS enabled, you can quickly access information about the resources involved in the finding, such as their CloudTrail and Kubernetes API activity, and netflow information. This can aid in investigation and help you determine root cause, impact, and other related resources that may also be compromised.

To learn more, see How to use new Amazon GuardDuty EKS Protection findings in the AWS Security Blog.

Now Available
You can now use Amazon Detective for EKS protection in all Regions where Amazon Detective is available. This feature is priced based on the volume of audit logs processed and analyzed by Detective.

Detective provides a free 30-day trial to all customers that enable EKS coverage, allowing customers to ensure that Detective’s capabilities meet security needs and to get an estimate of the service’s monthly cost before committing to paid usage. To learn more, see the Detective pricing page.

For technical documentation, visit the Amazon Detective User Guide. Please send feedback to AWS re:Post for Amazon Detective or through your usual AWS support contacts.

Learn all the details about Amazon Detective for EKS protection and get started today.

Channy



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