Azure Diagnostic Settings Deletion
editAzure Diagnostic Settings Deletion
editIdentifies the deletion of diagnostic settings in Azure, which send platform logs and metrics to different destinations. An adversary may delete diagnostic settings in an attempt to evade defenses.
Rule type: query
Rule indices:
- filebeat-*
Severity: medium
Risk score: 47
Runs every: 5 minutes
Searches indices from: now-25m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
Tags:
- Elastic
- Cloud
- Azure
- Continuous Monitoring
- SecOps
- Monitoring
Version: 1
Added (Elastic Stack release): 7.10.0
Rule authors: Elastic
Rule license: Elastic License
Potential false positives
editDeletion of diagnostic settings 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. Diagnostic settings deletion from unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule.
Investigation guide
editThe Azure Filebeat module must be enabled to use this rule.
Rule query
editevent.dataset:azure.activitylogs and azure.activitylogs.operation_name :MICROSOFT.INSIGHTS/DIAGNOSTICSETTINGS/DELETE 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/