AWS Security Group Configuration Change Detectionedit
Identifies a change to an AWS Security Group Configuration. A security group is like a virtual firewall, and modifying configurations may allow unauthorized access. Threat actors may abuse this to establish persistence, exfiltrate data, or pivot in an AWS environment.
Rule type: query
Rule indices:
- filebeat-*
- logs-aws*
Severity: low
Risk score: 21
Runs every: 10 minutes
Searches indices from: now-30m (Date Math format, see also Additional look-back time
)
Maximum alerts per execution: 100
References:
Tags:
- Elastic
- Cloud
- AWS
- Continuous Monitoring
- SecOps
- Network Security
Version: 3 (version history)
Added (Elastic Stack release): 7.15.0
Last modified (Elastic Stack release): 8.1.0
Rule authors: Elastic, Austin Songer
Rule license: Elastic License v2
Potential false positivesedit
A 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 guideedit
## Config The AWS Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule.
Rule queryedit
event.dataset:aws.cloudtrail and event.provider:iam.amazonaws.com and event.action:(AuthorizeSecurityGroupEgress or CreateSecurityGroup or ModifyInstanceAttribute or ModifySecurityGroupRules or RevokeSecurityGroupEgress or RevokeSecurityGroupIngress) and event.outcome:success
Threat mappingedit
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Persistence
- ID: TA0003
- Reference URL: https://attack.mitre.org/tactics/TA0003/
-
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 historyedit
- Version 3 (8.1.0 release)
-
- Formatting only
- Version 2 (7.16.0 release)
-
- Formatting only