Sigma rule: AWS ElastiCache Security Group Modified or Deleted

Rule

Title

AWS ElastiCache Security Group Modified or Deleted

Status

test

Level

low

Author

Austin Songer @austinsonger

Date

2021-07-24

Modified

2022-10-09

File

rules/cloud/aws/cloudtrail/aws_elasticache_security_group_modified_or_deleted.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Identifies when an ElastiCache security group has been modified or deleted.

Log source

product

aws

service

cloudtrail

Detection

selection:
    eventSource: elasticache.amazonaws.com
    eventName:
        - 'DeleteCacheSecurityGroup'
        - 'AuthorizeCacheSecurityGroupIngress'
        - 'RevokeCacheSecurityGroupIngress'
        - 'AuthorizeCacheSecurityGroupEgress'
        - 'RevokeCacheSecurityGroupEgress'
condition: selection

False positives (as the rule lists them)

• 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 from unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule.

Tags

• attack.impact
• attack.t1531

MITRE ATT&CK ids this rule names

• T1531

References

• https://github.com/elastic/detection-rules/blob/7d5efd68603f42be5e125b5a6a503b2ef3ac0f4e/rules/integrations/aws/impact_elasticache_security_group_modified_or_deleted.toml

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/cloud/aws/cloudtrail/aws_elasticache_security_group_modified_or_deleted.yml