AWS WAF Rule or Rule Group Deletion
editAWS WAF Rule or Rule Group Deletion
editIdentifies the deletion of a specific AWS Web Application Firewall (WAF) rule or rule group.
Rule type: query
Rule indices:
- filebeat-*
Severity: medium
Risk score: 47
Runs every: 10 minutes
Searches indices from: now-60m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
Tags:
- AWS
- Elastic
- SecOps
- Network
- Continuous Monitoring
Version: 1
Added (Elastic Stack release): 7.9.0
Rule authors: Elastic
Rule license: Elastic License
Potential false positives
editWAF rules or rule groups may be deleted by a system or network administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment. Rule deletions from unfamiliar users or hosts should be investigated. If a known behavior is causing false positives, it can be excluded from the rule.
Investigation guide
editThe AWS Filebeat module must be enabled to use this rule.
Rule query
editevent.module:aws and event.dataset:aws.cloudtrail and event.action:(DeleteRule or DeleteRuleGroup) and event.outcome:success
Threat mapping
editFramework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Disabling Security Tools
- ID: T1089
- Reference URL: https://attack.mitre.org/techniques/T1089/