PutBucketAcl

CSP: AWS

Tactics:

Defense Evasion Exfiltration

Techniques:

T1562T1530

Tags:

AWS S3

Event

Sets the Access Control List (ACL) for an S3 bucket, controlling access for specific AWS accounts or predefined groups.

Security Context

• Impairing defenses allows adversaries to operate freely by removing security controls that would otherwise detect or block their activity.
• Exfiltration through cloud services allows adversaries to extract data using legitimate APIs that may not trigger network-based alerts.

Log Source

CloudTrail

Sample Event

MITRE ATT&CK Mapping

Tactics: Defense Evasion Exfiltration

Techniques:

• T1562 — Impair Defenses — Adversaries may maliciously modify components of a victim environment in order to hinder or disable defensive mechanisms. This not only involves impairing preventative defenses, such as firewalls and anti-virus, but also detection capabilities that defenders can use to audit activity and identify...
• T1530 — Data from Cloud Storage — Adversaries may access data from cloud storage. Many IaaS providers offer solutions for online data object storage such as Amazon S3, Azure Storage, and Google Cloud Storage.