Try in Splunk Security Cloud

Description

This search provides information on Kubernetes service accounts with failure or forbidden access status, this search can be extended by using top or rare operators to find trends or rarities in failure status, user agents, source IPs and request URI

  • Type: Hunting
  • Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud

  • Last Updated: 2020-06-23
  • Author: Rod Soto, Splunk
  • ID: a6959c57-fa8f-4277-bb86-7c32fba579d5

Annotations

ATT&CK
Kill Chain Phase
  • Exploitation
NIST
CIS20
CVE
1
2
3
`aws_cloudwatchlogs_eks` user.groups{}=system:serviceaccounts responseStatus.status = Failure 
| table sourceIPs{} user.username userAgent verb responseStatus.status requestURI 
| `kubernetes_aws_detect_service_accounts_forbidden_failure_access_filter`

Macros

The SPL above uses the following Macros:

:information_source: kubernetes_aws_detect_service_accounts_forbidden_failure_access_filter is a empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.

Required field

  • _time

How To Implement

You must install splunk AWS add on and Splunk App for AWS. This search works with cloudwatch logs.

Known False Positives

This search can give false positives as there might be inherent issues with authentications and permissions at cluster.

Associated Analytic story

RBA

Risk Score Impact Confidence Message
25.0 50 50 tbd

:information_source: The Risk Score is calculated by the following formula: Risk Score = (Impact * Confidence/100). Initial Confidence and Impact is set by the analytic author.

Reference

Test Dataset

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 | version: 1