IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
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Elastic Docs ›Elastic Security Solution [8.2] ›Detections and alerts ›Prebuilt rule reference

AWS WAF Rule or Rule Group Deletion

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AWS WAF Rule or Rule Group Deletion

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Identifies the deletion of a specified AWS Web Application Firewall (WAF) rule or rule group.

Rule type: query

Rule indices:

  • filebeat-*
  • logs-aws*

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:

  • Elastic
  • Cloud
  • AWS
  • Continuous Monitoring
  • SecOps
  • Network Security

Version: 8 (version history)

Added (Elastic Stack release): 7.9.0

Last modified (Elastic Stack release): 8.2.0

Rule authors: Elastic

Rule license: Elastic License v2

Potential false positives

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WAF 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 by unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule.

Investigation guide

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## Config

The AWS Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule.

Rule query

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event.dataset:aws.cloudtrail and event.provider:(waf.amazonaws.com or
waf-regional.amazonaws.com or wafv2.amazonaws.com) and
event.action:(DeleteRule or DeleteRuleGroup) and event.outcome:success

Threat mapping

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Framework: MITRE ATT&CKTM

Rule version history

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Version 8 (8.2.0 release)

  • Updated query, changed from:

    event.dataset:aws.cloudtrail and event.action:(DeleteRule or
DeleteRuleGroup) and event.outcome:success
Version 7 (8.1.0 release)
  • Formatting only
Version 6 (7.13.0 release)
  • Formatting only
Version 5 (7.12.0 release)
  • Formatting only
Version 4 (7.11.2 release)
  • Formatting only
Version 3 (7.11.0 release)
  • Formatting only
Version 2 (7.10.0 release)

  • Updated query, changed from:

    event.module:aws and event.dataset:aws.cloudtrail and
event.action:(DeleteRule or DeleteRuleGroup) and event.outcome:success
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