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Elastic Docs ›Elastic Security Solution [8.5] ›Detections and alerts ›Prebuilt rule reference

Azure Diagnostic Settings Deletion

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Azure Diagnostic Settings Deletion

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Identifies 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-*
  • logs-azure*

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: 100 (version history)

Added (Elastic Stack release): 7.10.0

Last modified (Elastic Stack release): 8.5.0

Rule authors: Elastic

Rule license: Elastic License v2

Potential false positives

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Deletion 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

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Rule query
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event.dataset:azure.activitylogs and azure.activitylogs.operation_name
:"MICROSOFT.INSIGHTS/DIAGNOSTICSETTINGS/DELETE" and
event.outcome:(Success or success)











Threat mapping
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Framework: MITRE ATT&CKTM














Rule version history
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Version 100 (8.5.0 release)








    

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Formatting only

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Version 7 (8.4.0 release)








    

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Formatting only

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Version 5 (7.13.0 release)








    

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Formatting only

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Version 4 (7.12.0 release)








    

  • 

    Updated query, changed from:
    

    

    

    event.dataset:azure.activitylogs and azure.activitylogs.operation_name
:MICROSOFT.INSIGHTS/DIAGNOSTICSETTINGS/DELETE and
event.outcome:(Success or success)
    

    

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Version 3 (7.11.2 release)








    

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Formatting only

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Version 2 (7.11.0 release)








    

  • 

    Updated query, changed from:
    

    

    

    event.dataset:azure.activitylogs and azure.activitylogs.operation_name
:MICROSOFT.INSIGHTS/DIAGNOSTICSETTINGS/DELETE and
event.outcome:Success
    

    

    • 




















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