AWS EventBridge Rule Disabled or Deleted

Identifies when a user disabled or deleted an EventBridge rule. This activity can result in an unintended loss of visibility in applications or breaking the flow with other AWS services.

Rule type: query

Rule indices:

filebeat-*
logs-aws*

Severity: low

Risk score: 21

Runs every: 5 minutes

Searches indices from: now-20m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

Elastic
Cloud
AWS
Continuous Monitoring
SecOps
Monitoring

Version: 1

Added (Elastic Stack release): 7.16.0

Rule authors: Austin Songer

Rule license: Elastic License v2

Potential false positives

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EventBridge Rules could be deleted or disabled by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment. EventBridge Rules being deleted or disabled from unfamiliar users 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:eventbridge.amazonaws.com and event.action:(DeleteRule
or DisableRule) and event.outcome:success

Threat mapping

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Framework: MITRE ATT&CK^TM

Tactic:
- Name: Impact
- ID: TA0040
- Reference URL: https://attack.mitre.org/tactics/TA0040/

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