IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
AWS EC2 Network Access Control List Creation
editAWS EC2 Network Access Control List Creation
editIdentifies the creation of an AWS Elastic Compute Cloud (EC2) network access control list (ACL) or an entry in a network ACL with a specified rule number.
Rule type: query
Rule indices:
- filebeat-*
- logs-aws.cloudtrail-*
Severity: low
Risk score: 21
Runs every: 10m
Searches indices from: now-60m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
- https://awscli.amazonaws.com/v2/documentation/api/latest/reference/ec2/create-network-acl.html
- https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CreateNetworkAcl.html
- https://awscli.amazonaws.com/v2/documentation/api/latest/reference/ec2/create-network-acl-entry.html
- https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_CreateNetworkAclEntry.html
Tags:
- Domain: Cloud
- Data Source: AWS
- Data Source: Amazon Web Services
- Data Source: AWS EC2
- Use Case: Network Security Monitoring
- Tactic: Persistence
Version: 206
Rule authors:
- Elastic
Rule license: Elastic License v2
Investigation guide
editSetup
editThe 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:ec2.amazonaws.com and event.action:(CreateNetworkAcl or CreateNetworkAclEntry) and event.outcome:success
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Persistence
- ID: TA0003
- Reference URL: https://attack.mitre.org/tactics/TA0003/
-
Technique:
- Name: External Remote Services
- ID: T1133
- Reference URL: https://attack.mitre.org/techniques/T1133/