ID | Technique | Tactic |
---|
Detection: Kubernetes AWS detect RBAC authorization by account
DEPRECATED DETECTION
This detection has been marked as deprecated by the Splunk Threat Research team. This means that it will no longer be maintained or supported. If you have any questions or concerns, please reach out to us at research@splunk.com.
Description
This search provides information on Kubernetes RBAC authorizations by accounts, this search can be modified by adding top to see both extremes of RBAC by accounts occurrences
Search
1`aws_cloudwatchlogs_eks` annotations.authorization.k8s.io/reason=*
2| table sourceIPs{} user.username userAgent annotations.authorization.k8s.io/reason
3| stats count by user.username annotations.authorization.k8s.io/reason
4| rare user.username annotations.authorization.k8s.io/reason
5|`kubernetes_aws_detect_rbac_authorization_by_account_filter`
Data Source
Name | Platform | Sourcetype | Source | Supported App |
---|---|---|---|---|
N/A | N/A | N/A | N/A | N/A |
Macros Used
Name | Value |
---|---|
aws_cloudwatchlogs_eks | sourcetype="aws:cloudwatchlogs:eks" |
kubernetes_aws_detect_rbac_authorization_by_account_filter | search * |
kubernetes_aws_detect_rbac_authorization_by_account_filter
is an empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.
Annotations
Default Configuration
This detection is configured by default in Splunk Enterprise Security to run with the following settings:
Setting | Value |
---|---|
Disabled | true |
Cron Schedule | 0 * * * * |
Earliest Time | -70m@m |
Latest Time | -10m@m |
Schedule Window | auto |
Creates Risk Event | False |
Implementation
You must install splunk AWS add on and Splunk App for AWS. This search works with cloudwatch logs
Known False Positives
Not all RBAC Authorications are malicious. RBAC authorizations can uncover malicious activity specially if sensitive Roles have been granted.
Associated Analytic Story
Risk Based Analytics (RBA)
Risk Message | Risk Score | Impact | Confidence |
---|---|---|---|
tbd | 25 | 50 | 50 |
Detection Testing
Test Type | Status | Dataset | Source | Sourcetype |
---|---|---|---|---|
Validation | Not Applicable | N/A | N/A | N/A |
Unit | ❌ Failing | N/A | N/A |
N/A |
Integration | ❌ Failing | N/A | N/A |
N/A |
Replay any dataset to Splunk Enterprise by using our replay.py
tool or the UI.
Alternatively you can replay a dataset into a Splunk Attack Range
Source: GitHub | Version: 2