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Description

This search provides information of unauthenticated requests via source IP user agent, request URI and response status data against Kubernetes cluster in Azure

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

  • Last Updated: 2020-05-19
  • Author: Rod Soto, Splunk
  • ID: c5e5bd5c-1013-4841-8b23-e7b3253c840a

Annotations

ATT&CK
ID Technique Tactic
T1526 Cloud Service Discovery Discovery
Kill Chain Phase
  • Reconnaissance
NIST
CIS20
CVE
1
2
3
4
5
`kubernetes_azure` category=kube-audit 
| spath input=properties.log 
| search responseStatus.code=401 
| table  sourceIPs{} userAgent verb requestURI responseStatus.reason 
|`kubernetes_azure_scan_fingerprint_filter`

Macros

The SPL above uses the following Macros:

Note that kubernetes_azure_scan_fingerprint_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 the Add-on for Microsoft Cloud Services and Configure Kube-Audit data diagnostics

Known False Positives

Not all unauthenticated requests are malicious, but source IPs, userAgent, verb, request URI and response status will provide context.

Associated Analytic story

RBA

Risk Score Impact Confidence Message
25.0 50 50 tbd

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