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: 10m

Searches indices from: now-30m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

  • Domain: Cloud
  • Data Source: AWS
  • Data Source: Amazon Web Services
  • Use Case: Network Security Monitoring
  • Tactic: Persistence

Version: 205

Rule authors:

  • Elastic
  • Austin Songer

Rule license: Elastic License v2

Investigation guideedit


Rule queryedit

event.dataset:aws.cloudtrail and event.provider:ec2.amazonaws.com and event.action:(AuthorizeSecurityGroupEgress or
CreateSecurityGroup or ModifyInstanceAttribute or ModifySecurityGroupRules or RevokeSecurityGroupEgress or
RevokeSecurityGroupIngress) and event.outcome:success

Framework: MITRE ATT&CKTM