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Elastic Docs ›Elastic Security Solution [8.15] ›Detections and alerts ›Prebuilt rule reference

Azure Frontdoor Web Application Firewall (WAF) Policy Deleted

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Azure Frontdoor Web Application Firewall (WAF) Policy Deleted

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Identifies the deletion of a Frontdoor Web Application Firewall (WAF) Policy in Azure. An adversary may delete a Frontdoor Web Application Firewall (WAF) Policy in an attempt to evade defenses and/or to eliminate barriers to their objective.

Rule type: query

Rule indices:

  • filebeat-*
  • logs-azure*

Severity: low

Risk score: 21

Runs every: 5m

Searches indices from: now-25m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

  • Domain: Cloud
  • Data Source: Azure
  • Use Case: Network Security Monitoring
  • Tactic: Defense Evasion

Version: 102

Rule authors:

  • Austin Songer

Rule license: Elastic License v2

Investigation guide

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Setup

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

Rule query

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event.dataset:azure.activitylogs and azure.activitylogs.operation_name:"MICROSOFT.NETWORK/FRONTDOORWEBAPPLICATIONFIREWALLPOLICIES/DELETE" and event.outcome:(Success or success)

Framework: MITRE ATT&CKTM

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