Add An Iam User To A Group (aws)

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

An attacker may attempt to add an IAM user to a group, in order to escalate their privileges

MITRE IDs

• T1098

Required Permissions

• iam:AddUserToGroup

Required Parameters

Name	Type	Description	Example Value
group	str	Group to add user to	example-group
user	str	IAM user to add to group	example-user

Attacker Action

aws iam add-user-to-group --group-name example-group --user-name example-user

Detection Case

ELK query

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

eventName:AddUserToGroup AND eventSource:iam.amazonaws.com

Sigma Definition

---
title: Add an IAM User to a Group
id: 6e467337-484c-4b11-8a83-fb92af74afed
status: experimental
author: Nick Jones
date: 2024-12-02
description: An attacker may attempt to add an IAM user to a group, in order to escalate their privileges
logsource:
  service: cloudtrail
detection:
  selection_source:
    - eventSource: "iam.amazonaws.com"
  events:
    - eventName: "AddUserToGroup"
  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.