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AWS ElastiCache Security Group Created

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AWS ElastiCache Security Group Created

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Identifies when an ElastiCache security group has been created.

Rule type: query

Rule indices:

filebeat-*
logs-aws*

Severity: low

Risk score: 21

Runs every: 10 minutes

Searches indices from: now-60m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

https://docs.aws.amazon.com/AmazonElastiCache/latest/APIReference/API_CreateCacheSecurityGroup.html

Tags:

Elastic
Cloud
AWS
Continuous Monitoring
SecOps
Monitoring

Version: 101 (version history)

Added (Elastic Stack release): 7.16.0

Last modified (Elastic Stack release): 8.6.0

Rule authors: Austin Songer

Rule license: Elastic License v2

Potential false positives

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

Investigation guide

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Rule query

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event.dataset:aws.cloudtrail and
event.provider:elasticache.amazonaws.com and event.action:"Create
Cache Security Group" and event.outcome:success

Threat mapping

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Framework: MITRE ATT&CK^TM

Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
Technique:
- Name: Impair Defenses
- ID: T1562
- Reference URL: https://attack.mitre.org/techniques/T1562/

Rule version history

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Version 101 (8.6.0 release)

Formatting only

Version 100 (8.5.0 release)

Formatting only

Version 4 (8.4.0 release)

Updated query, changed from:

event.dataset:aws.cloudtrail and
event.provider:elasticache.amazonaws.com and event.action:"Create
Cache Security Group" and event.outcome:success

Version 2 (8.1.0 release)

Formatting only

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