Elastic Security Detection Rules

Azure Frontdoor Web Application Firewall (WAF) Policy Deleted

Last updated 7 months ago on 2025-01-15
Created 4 years ago on 2021-08-01

About

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.
Tags
Domain: CloudData Source: AzureUse Case: Network Security MonitoringTactic: Defense EvasionLanguage: kuery
Severity
low
Risk Score
21
MITRE ATT&CK™

Defense Evasion (TA0005)(opens in a new tab or window)

↳ Impair Defenses (T1562)(opens in a new tab or window)

False Positive Examples
Azure Front Web Application Firewall (WAF) Policy deletions may be done by a system or network administrator. Verify whether the username, hostname, and/or resource name should be making changes in your environment. Azure Front Web Application Firewall (WAF) Policy deletions by unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule.
License
Elastic License v2(opens in a new tab or window)

Definition

Rule Type
Query (Kibana Query Language)
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
filebeat-*logs-azure*
Related Integrations

azure(opens in a new tab or window)

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

Install detection rules in Elastic Security

Detect Azure Frontdoor Web Application Firewall (WAF) Policy Deleted in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(opens in a new tab or window).