AWS S3 Enumeration

Triggers

• Credential was observed performing a set of anomalous API requests that can be associated with the discovery or subsequent phases of an attack.

Possible Root Causes

• An attacker may be actively looking for privilege escalation opportunities.
• A security or IT service may intentionally be enumerating these APIs for monitoring reasons.

Business Impact

• Privilege escalation may indicate the presence of an adversary that is modifying permissions to progress towards an objective.

Steps to Verify

• Investigate the account context that performed the action for other signs of malicious activity.
• Validate that any modifications are authorized, given the purpose and policies governing this resource.
• If review indicates possible malicious actions or high-risk configuration, revert configuration and disable credentials associated with this alert then perform a comprehensive investigation.