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Description

This search provides detection of accounts creating permanent keys. Permanent keys are not created by default and they are only needed for programmatic calls. Creation of Permanent key is an important event to monitor.

  • Type: Hunting
  • Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
  • Datamodel:
  • Last Updated: 2020-07-27
  • Author: Rod Soto, Splunk
  • ID: 12d6d713-3cb4-4ffc-a064-1dca3d1cca01

ATT&CK

ID Technique Tactic
T1078 Valid Accounts Defense Evasion, Persistence, Privilege Escalation, Initial Access
`aws_cloudwatchlogs_eks` CreateAccessKey 
| spath eventName 
| search eventName=CreateAccessKey "userIdentity.type"=IAMUser 
| table sourceIPAddress userName userIdentity.type userAgent action status responseElements.accessKey.createDate responseElements.accessKey.status responseElements.accessKey.accessKeyId 
|`aws_detect_permanent_key_creation_filter`

Associated Analytic Story

How To Implement

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

Required field

  • _time
  • eventName
  • userIdentity.type
  • sourceIPAddress
  • userName userIdentity.type
  • userAgent
  • action
  • status
  • responseElements.accessKey.createDate
  • esponseElements.accessKey.status
  • responseElements.accessKey.accessKeyId

Kill Chain Phase

  • Lateral Movement

Known False Positives

Not all permanent key creations are malicious. If there is a policy of rotating keys this search can be adjusted to provide better context.

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