Add An Entity To An Iam Role Assumption Policy (aws)

Platform	Author	Last Update
aws	Nick Jones	2024-12-02

None

MITRE IDs

• T1098

Required Permissions

• iam:GetRole
• iam:UpdateAssumeRolePolicy

Required Parameters

Name	Type	Description	Example Value
role	str	Name of role to alter	OrganizationAccountAccessRole
entityarn	str	ARN of entity to add to the policy	arn:aws:iam::000000000000:root

Attacker Action

aws -h

Detection Case

ELK query

When logs are ingested into ELK, the following Lucene query can be used to identify relevant events.

eventName:None AND eventSource:None

Sigma Definition

---
title: Add an entity to an IAM role assumption policy
id: 8dc9a4f7-ce41-4962-a2d2-5625d9e2502d
status: experimental
author: Nick Jones
date: 2024-12-02
description: None
logsource:
  service: cloudtrail
detection:
  selection_source:
    - eventSource: "None"
  events:
    - eventName: "None"
  condition: selection_source and events
level: low
tags:
  - attack.T1098


falsepositives:
  - Developers making legitimate changes to the environment. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.