Delete Iam User (aws)

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

An adversary may attempt to delete an IAM user within an account, to alter legitimate access or block administrative activity.

MITRE IDs

• T1531

Required Permissions

• iam:DeleteUser

Required Parameters

Name	Type	Description	Example Value
user	str	IAM user to delete	example_user

Attacker Action

aws iam delete-user --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:DeleteUser AND eventSource:*.iam.amazonaws.com

Sigma Definition

---
title: Delete IAM user
id: aeffd059-cd63-4ff5-ac5f-63c79237c6fa
status: experimental
author: Nick Jones
date: 2024-12-02
description: An adversary may attempt to delete an IAM user within an account, to alter legitimate access or block administrative activity.
logsource:
  service: cloudtrail
detection:
  selection_source:
    - eventSource: "*.iam.amazonaws.com"
  events:
    - eventName: "DeleteUser"
  condition: selection_source and events
level: low
tags:
  - attack.T1531


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.