Add A Policy To A Role (aws)

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

An adversary may attempt to add a policy to a role, in order to grant additional privileges to a compromised resource.

MITRE IDs

• T1098

Required Permissions

• iam:AttachUserPolicy

Required Parameters

Name	Type	Description	Example Value
role	str	Role to add policy to	ReadOnlyRole
policyarn	str	Policy to add to Role	arn:aws:iam::aws:policy/ReadOnlyAccess

Attacker Action

aws iam attach-role-policy --role-name  --policy-arn

Detection Case

ELK query

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

eventName:AttachRolePolicy

Sigma Definition

---
title: Add a policy to a role
id: cdf3b0fc-0c45-4bb4-89f2-1c6b2661ec52
status: experimental
author: Nick Jones
date: 2024-12-02
description: An adversary may attempt to add a policy to a role, in order to grant additional privileges to a compromised resource.
logsource:
  service: cloudtrail
detection:
  selection_source:
    - eventSource: ""
  events:
    - eventName: "AttachRolePolicy"
  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.