IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
« Azure Conditional Access Policy Modified Azure Event Hub Authorization Rule Created or Updated »
Elastic Docs ›Elastic Security Solution [7.14] ›Detections and alerts ›Prebuilt rule reference

Azure Diagnostic Settings Deletion

edit

Azure Diagnostic Settings Deletion

edit

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: 5 (version history)

Added (Elastic Stack release): 7.10.0

Last modified (Elastic Stack release): 7.13.0

Rule authors: Elastic

Rule license: Elastic License v2

Potential false positives

edit

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

edit

Config

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

Rule query

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

Threat mapping

edit

Framework: MITRE ATT&CKTM

Rule version history

edit
Version 5 (7.13.0 release)
  • Formatting only
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)
Version 3 (7.11.2 release)
  • Formatting only
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
« Azure Conditional Access Policy Modified Azure Event Hub Authorization Rule Created or Updated »