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Description

This search provides information on Kubernetes service accounts,accessing pods by IP address, verb and decision

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

  • Last Updated: 2020-07-10
  • Author: Rod Soto, Splunk
  • ID: 7f5c2779-88a0-4824-9caa-0f606c8f260f

Annotations

ATT&CK
Kill Chain Phase
  • Exploitation
NIST
CIS20
CVE
1
2
3
4
`google_gcp_pubsub_message`  data.protoPayload.request.spec.group{}=system:serviceaccounts 
| table src_ip src_user http_user_agent data.protoPayload.request.spec.nonResourceAttributes.verb data.labels.authorization.k8s.io/decision data.protoPayload.response.spec.resourceAttributes.resource 
| top src_ip src_user http_user_agent data.labels.authorization.k8s.io/decision data.protoPayload.response.spec.resourceAttributes.resource 
|`kubernetes_gcp_detect_most_active_service_accounts_by_pod_filter`

Macros

The SPL above uses the following Macros:

:information_source: kubernetes_gcp_detect_most_active_service_accounts_by_pod_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 GCP add on. This search works with pubsub messaging service logs

Known False Positives

Not all service accounts interactions are malicious. Analyst must consider IP, verb and decision context when trying to detect maliciousness.

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