Deprecated - AWS ElastiCache Security Group Modified or Deleted

Last updated a month ago on 2025-11-18

Created 4 years ago on 2021-07-19

About

Identifies when an ElastiCache security group has been modified or deleted. Amazon EC2-Classic and ElastiCache CacheSecurityGroups have been retired. Modern ElastiCache 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 ElastiCache in VPC-based deployments.

Tags

Domain: CloudData Source: AWSData Source: Amazon Web ServicesTactic: Defense EvasionLanguage: kuery

Severity

low

Risk Score

MITRE ATT&CK™

Defense Evasion (TA0005)(external, opens in a new tab or window)

↳ Impair Defenses (T1562)(external, opens in a new tab or window)

False Positive Examples

A ElastiCache security group deletion may be done 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 deletions by unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule.

License

Elastic License v2(external, opens in a new tab or window)

Definition

Rule Type: Query (Kibana Query Language)
Integration Pack: Prebuilt Security Detection Rules
Index Patterns: filebeat-*logs-aws.cloudtrail-*
Related Integrations: aws(external, opens in a new tab or window)
Query

✄𐘗text code block:
✄𐘗event.dataset:aws.cloudtrail and event.provider:elasticache.amazonaws.com and event.action:("Delete Cache Security Group" or
"Authorize Cache Security Group Ingress" or  "Revoke Cache Security Group Ingress" or "AuthorizeCacheSecurityGroupEgress" or
"RevokeCacheSecurityGroupEgress") and event.outcome:success

Install detection rules in Elastic Security

Detect Deprecated - AWS ElastiCache Security Group Modified or Deleted in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(external, opens in a new tab or window).