Azure Automation Runbook Created or Modified

edit

Identifies when an Azure Automation runbook is created or modified. An adversary may create or modify an Azure Automation runbook to execute malicious code and maintain persistence in their target’s environment.

Rule type: query

Rule indices:

  • filebeat-*
  • logs-azure*

Severity: low

Risk score: 21

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
  • Configuration Audit

Version: 7 (version history)

Added (Elastic Stack release): 7.10.0

Last modified (Elastic Stack release): 8.4.0

Rule authors: Elastic

Rule license: Elastic License v2

Investigation guide

edit

Rule query

edit
event.dataset:azure.activitylogs and
azure.activitylogs.operation_name: (
"MICROSOFT.AUTOMATION/AUTOMATIONACCOUNTS/RUNBOOKS/DRAFT/WRITE" or
"MICROSOFT.AUTOMATION/AUTOMATIONACCOUNTS/RUNBOOKS/WRITE" or
"MICROSOFT.AUTOMATION/AUTOMATIONACCOUNTS/RUNBOOKS/PUBLISH/ACTION" )
and event.outcome:(Success or success)

Rule version history

edit
Version 7 (8.4.0 release)
  • Formatting only
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.AUTOMATION/AUTOMATIONACCOUNTS/RUNBOOKS/DRAFT/WRITE or
    MICROSOFT.AUTOMATION/AUTOMATIONACCOUNTS/RUNBOOKS/WRITE or
    MICROSOFT.AUTOMATION/AUTOMATIONACCOUNTS/RUNBOOKS/PUBLISH/ACTION) 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.AUTOMATION/AUTOMATIONACCOUNTS/RUNBOOKS/DRAFT/WRITE or
    MICROSOFT.AUTOMATION/AUTOMATIONACCOUNTS/RUNBOOKS/WRITE or
    MICROSOFT.AUTOMATION/AUTOMATIONACCOUNTS/RUNBOOKS/PUBLISH/ACTION) and
    event.outcome:Success