AWS Security Token Service (STS) AssumeRole Usageedit

Identifies the use of AssumeRole. AssumeRole returns a set of temporary security credentials that can be used to access AWS resources. An adversary could use those credentials to move laterally and escalate privileges.

Rule type: query

Rule indices:

  • filebeat-*
  • logs-aws*

Severity: low

Risk score: 21

Runs every: 5m

Searches indices from: None (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100



  • Elastic
  • Cloud
  • AWS
  • Continuous Monitoring
  • SecOps
  • Identity and Access

Version: 2

Rule authors:

  • Austin Songer

Rule license: Elastic License v2

Investigation guideedit

## Config

The AWS Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule.

Rule queryedit

event.dataset:aws.cloudtrail and and event.action:AssumedRole and
aws.cloudtrail.user_identity.session_context.session_issuer.type:Role and event.outcome:success