AWS Route Table Modified or Deletededit
Identifies when an AWS Route Table has been modified or deleted.
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://github.com/easttimor/aws-incident-response#network-routing
- https://docs.datadoghq.com/security_platform/default_rules/aws-ec2-route-table-modified/
- https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_ReplaceRoute.html
- https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_ReplaceRouteTableAssociation
- https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_DeleteRouteTable.html
- https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_DeleteRoute.html
- https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_DisassociateRouteTable.html
Tags:
- Elastic
- Cloud
- AWS
- Continuous Monitoring
- SecOps
- Network Security
- Persistence
Version: 5 (version history)
Added (Elastic Stack release): 7.16.0
Last modified (Elastic Stack release): 8.4.0
Rule authors: Elastic, Austin Songer
Rule license: Elastic License v2
Potential false positivesedit
Route Table could be modified or deleted by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment. Route Table being modified from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule. Also automated processes that use Terraform may lead to false positives.
Investigation guideedit
Rule queryedit
event.dataset:aws.cloudtrail and event.provider:cloudtrail.amazonaws.com and event.action:(ReplaceRoute or ReplaceRouteTableAssociation or DeleteRouteTable or DeleteRoute or DisassociateRouteTable) and event.outcome:success
Threat mappingedit
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Persistence
- ID: TA0003
- Reference URL: https://attack.mitre.org/tactics/TA0003/
Rule version historyedit
- Version 5 (8.4.0 release)
-
- Formatting only
- Version 3 (8.3.0 release)
-
- Formatting only
- Version 2 (8.1.0 release)
-
- Formatting only