splunk-security_content/docs/_stories/aws_iam_privilege_escalation.md

title, last_modified_at, toc, tags

title	last_modified_at	toc	tags
AWS IAM Privilege Escalation	2021-03-08	true	Splunk Security Analytics for AWS Splunk Enterprise Splunk Enterprise Security Splunk Cloud

Try in Splunk Security Cloud{: .btn .btn--success}

Description

This analytic story contains detections that query your AWS Cloudtrail for activities related to privilege escalation.

• Product: Splunk Security Analytics for AWS, Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
• Datamodel:
• Last Updated: 2021-03-08
• Author: Bhavin Patel, Splunk
• ID: ced74200-8465-4bc3-bd2c-22782eec6750

Narrative

Amazon Web Services provides a neat feature called Identity and Access Management (IAM) that enables organizations to manage various AWS services and resources in a secure way. All IAM users have roles, groups and policies associated with them which governs and sets permissions to allow a user to access specific restrictions.
However, if these IAM policies are misconfigured and have specific combinations of weak permissions; it can allow attackers to escalate their privileges and further compromise the organization. Rhino Security Labs have published comprehensive blogs detailing various AWS Escalation methods. By using this as an inspiration, Splunk’s research team wants to highlight how these attack vectors look in AWS Cloudtrail logs and provide you with detection queries to uncover these potentially malicious events via this Analytic Story. \

Detections

Name	Technique	Type
AWS Create Policy Version to allow all resources	Cloud Accounts, Cloud Account, Cloud Infrastructure Discovery, Brute Force, Account Manipulation, Cloud Groups	TTP
AWS CreateAccessKey	Cloud Account	Hunting
AWS CreateLoginProfile	Cloud Account	TTP
AWS IAM Assume Role Policy Brute Force	Cloud Infrastructure Discovery, Brute Force	TTP
AWS IAM Delete Policy	Account Manipulation	Hunting
AWS IAM Failure Group Deletion	Account Manipulation	Anomaly
AWS IAM Successful Group Deletion	Cloud Groups, Account Manipulation	Hunting
AWS SetDefaultPolicyVersion	Cloud Accounts	TTP
AWS UpdateLoginProfile	Cloud Account	TTP

Reference

• https://rhinosecuritylabs.com/aws/aws-privilege-escalation-methods-mitigation/
• https://www.cyberark.com/resources/threat-research-blog/the-cloud-shadow-admin-threat-10-permissions-to-protect
• https://labs.bishopfox.com/tech-blog/privilege-escalation-in-aws

source | version: 1