AWS Route Table Modified or Deleted
editAWS Route Table Modified or Deleted
editIdentifies 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/cloudtrail-aws-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
Version: 1
Added (Elastic Stack release): 7.16.0
Rule authors: Elastic, Austin Songer
Rule license: Elastic License v2
Potential false positives
editRoute 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 uses Terraform may lead to false positives.
Investigation guide
edit## Config The AWS Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule.
Rule query
editevent.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 mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Persistence
- ID: TA0003
- Reference URL: https://attack.mitre.org/tactics/TA0003/