AWS ElastiCache Security Group Created — Sigma Rule

Rule metadata and linked tags

Author: Austin Songer @austinsonger. Source status: test; severity: low. Source dates: 2021-07-24 / 2022-10-09.

{
  "product": "aws",
  "service": "cloudtrail"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 027461e043897cf30e90a6511e8f815ad52931e5fb472743a03d6d5b064b910a

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: AWS ElastiCache Security Group Created
id: 4ae68615-866f-4304-b24b-ba048dfa5ca7
status: test
description: Detects when an ElastiCache security group has been created.
references:
    - https://github.com/elastic/detection-rules/blob/598f3d7e0a63221c0703ad9a0ea7e22e7bc5961e/rules/integrations/aws/persistence_elasticache_security_group_creation.toml
author: Austin Songer @austinsonger
date: 2021-07-24
modified: 2022-10-09
tags:
    - attack.persistence
    - attack.t1136
    - attack.t1136.003
logsource:
    product: aws
    service: cloudtrail
detection:
    selection:
        eventSource: elasticache.amazonaws.com
        eventName: 'CreateCacheSecurityGroup'
    condition: selection
falsepositives:
    - A ElastiCache 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 from unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule.


level: low

Original YAML and metadata in JSON

False positives

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

Source references

• https://github.com/elastic/detection-rules/blob/598f3d7e0a63221c0703ad9a0ea7e22e7bc5961e/rules/integrations/aws/persistence_elasticache_security_group_creation.toml