Possible AWS STS AssumeRole Misuse (via cloudtrail)

title: Possible AWS STS AssumeRole Misuse (via cloudtrail)
id: 396b3ced-1238-5a60-b6a2-e7eebb54a5e5
status: stable
description: This rule detects the anomalous use of AssumeRole. Adversaries could move laterally and escalate privileges.
references:
    - https://attack.mitre.org/techniques/T1550/001/
    - https://attack.mitre.org/techniques/T1550/
    - https://attack.mitre.org/techniques/T1548/
    - https://github.com/elastic/detection-rules/pull/1214
    - https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRole.html
author: Huntrule Team
date: 2026-01-29
tags:
    - attack.lateral-movement
    - attack.privilege-escalation
    - attack.t1548
    - attack.t1550
    - attack.t1550.001
logsource:
    product: aws
    service: cloudtrail
detection:
    selection:
        userIdentity.type: AssumedRole
        userIdentity.sessionContext.sessionIssuer.type: Role
    condition: selection
falsepositives:
    - Unknown
level: low