an rds security group may be created by a system or network administrator. verify whether the user identity, user agent, and/or hostname should be making changes in your environment. security group creations by unfamiliar users or hosts should be investigated. if known behavior is causing false positives, it can be exempted from the rule.

t1136
aws
elastic

Techniques

T1136

Sample rules

Deprecated - AWS RDS Security Group Creation

source: elastic
technicques:
- T1136

Description

Identifies the creation of an Amazon Relational Database Service (RDS) Security group. Modern RDS deployments run in a VPC and use standard EC2 security groups instead. This rule should be retained only for historical log analysis on legacy CloudTrail data. We recommend relying on “AWS EC2 Security Group Configuration Change” rule for network-control changes impacting RDS in VPC-based deployments.

Detection logic

event.dataset:aws.cloudtrail and event.provider:rds.amazonaws.com and event.action:CreateDBSecurityGroup and event.outcome:success