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Microsoft 365 Exchange DLP Policy Removed

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Microsoft 365 Exchange DLP Policy Removed

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Identifies when a Data Loss Prevention (DLP) policy is removed in Microsoft 365. An adversary may remove a DLP policy to evade existing DLP monitoring.

Rule type: query

Rule indices:

  • filebeat-*
  • logs-o365*

Severity: medium

Risk score: 47

Runs every: 5m

Searches indices from: now-30m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

  • Domain: Cloud
  • Data Source: Microsoft 365
  • Use Case: Configuration Audit
  • Tactic: Defense Evasion

Version: 206

Rule authors:

  • Elastic

Rule license: Elastic License v2

Investigation guide

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Setup

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The Office 365 Logs Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule.

Rule query

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event.dataset:o365.audit and event.provider:Exchange and event.category:web and event.action:"Remove-DlpPolicy" and event.outcome:success

Framework: MITRE ATT&CKTM

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