IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

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Azure Conditional Access Policy Modified

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Azure Conditional Access Policy Modified

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Identifies when an Azure Conditional Access policy is modified. Azure Conditional Access policies control access to resources via if-then statements. For example, if a user wants to access a resource, then they must complete an action such as using multi-factor authentication to access it. An adversary may modify a Conditional Access policy in order to weaken their target’s security controls.

Rule type: query

Rule indices:

filebeat-*
logs-azure*

Severity: medium

Risk score: 47

Runs every: 5m

Searches indices from: now-25m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

https://docs.microsoft.com/en-us/azure/active-directory/conditional-access/overview

Tags:

Elastic
Cloud
Azure
Continuous Monitoring
SecOps
Configuration Audit

Version: 8

Rule authors:

Elastic

Rule license: Elastic License v2

Investigation guide

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Rule query

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event.dataset:(azure.activitylogs or azure.auditlogs) and
event.action:"Update conditional access policy" and event.outcome:(Success or success)

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Persistence
- ID: TA0003
- Reference URL: https://attack.mitre.org/tactics/TA0003/
Technique:
- Name: Account Manipulation
- ID: T1098
- Reference URL: https://attack.mitre.org/techniques/T1098/

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