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Splunk Add on for Microsoft Azure

Splunk Cloud
Splunk Labs
This app is NOT supported by Splunk. Please read about what that means for you here.
This add-on collects data from Microsoft Azure including the following:

Azure AD Data
- Users - Azure AD user data
- Interactive Sign-ins - Azure AD sign-ins including conditional access policies and MFA
- Directory audits - Azure AD directory changes including old and new values
- Devices - Registered devices in Azure AD
- Risk Detections
Estimated billing and consumption
Inventory metadata
- Resource Groups - Resource group configuration
- Virtual Machines - VM, Disk, Image, and Snapshot configurations
- Virtual Networks - VNET, NSG, and Public IP configurations
- Managed Disks
- Subscriptions - Subscription name, ID, and type
- Topology - IaaS relationships
Azure Security Center
- Alerts
- Tasks
Azure Resource Graph

This add-on contains the following alert actions:

- Stop Azure VM - stops an Azure Virtual Machine.
- Add member to group - adds a user to a group. This can be useful if you need to enable additional policies like MFA based on search results.
- Dismiss Azure Alert - dismisses an Azure Security Center alert.

Version 3.0.0 and later of the Microsoft Azure Add-on for Splunk is compatible only with Splunk Enterprise version 8.0.0 and above.

Splunk Add-on for Microsoft Azure



  • An active Azure Subscription
  • For Azure Active Directory Sign-in data, an Azure Active Directory Premium P1 or P2 edition
  • An Azure Active Directory Application Registration

Required APIs and Permissions

Azure/O365 Add-on Required Permissions


Where to install this add-on

Unless otherwise noted, all supported add-ons can be safely installed to all tiers of a distributed Splunk platform deployment. See Where to install Splunk add-ons in Splunk Add-ons for more information.

This table provides a reference for installing this specific add-on to a distributed deployment of Splunk Enterprise.

Splunk platform component Supported Required Comments
Search Heads Yes Yes This add-on contains search-time knowledge. It is recommended to turn visibility off on your search heads to prevent data duplication errors that can result from running inputs on your search heads instead of (or in addition to) on your data collection node.
Heavy Forwarders Yes No (but recommended) It is recommended to install this add-on on a heavy forwarder for data collection. Data collection should be configured in only 1 place to avoid duplicates.
Indexers Yes No Not required as the parsing operations occur on the forwarders.
Universal Forwarders No No Universal forwarders are not supported for data collection because the modular inputs require Python and the Splunk REST handler.

Azure Active Directory Input Notes

Data Collected

The API that the Azure Active Directory Sign-in input uses only returns sign-ins that are interactive in nature (where a username/password is passed as part of the auth token) and successful federation sign-ins. To collect sign-in data like non-interactive sign-ins, service principal sign-ins, managed identity sing-ins, etc., stream the Azure Active Directory data to an Event Hub. The Splunk Add-on for Microsoft Cloud Services can be used to retrieve Event Hub data.

Throttling Guidance

The Azure Active Directory Sign-in and Audit inputs in this add-on utilize Azure AD activity reports available in the Microsoft Graph API. Microsoft Graph imposes service-specific limits to prevent the overuse of resources. These limits affect the scalability and throughput of the Azure Active Directory Sign-in and Audit inputs in this add-on. Refer to the identity and access reports service limits for specific imposed limits.

Identifying Throttling in your Splunk Environment

When throttling happens, an HTTP response code 429 is returned. Run the following search to determine if throttling is impacting your data ingestion:

index=_internal 429 client error


When a request is made to Microsoft Graph, only the first 1,000 records are returned. If there are more than 1,000 records available, a continuation token is returned along with the data. In this scenario, Splunk will index the 1,000 records returned and then follow the continuation token to retrieve the next 1,000 records. Each 1,000 record request counts toward the throttling limits.


To overcome throttling and collect non-interactive sign-in data, send Azure Active Directory Sign-in and Audit data to an Event Hub. The Splunk Add-on for Microsoft Cloud Services can be utilized to collect Event Hub data.


Upgrades of the same major version are supported. For example, upgrading from version 2.0.0 to 2.1.0 will work. However, upgrading from version 2.x to 3.x will not work and will cause errors.


Ensure the prerequisites are met above.

  • Most inputs require an Azure AD application registration. Refer to the in-app documentation for details on setting this up.

CIM Compliance

Version 4.13.0

  • Authentication model
    • Azure AD sign-in events
  • Inventory model
    • Azure AD user events
  • User model
    • Azure AD user events


  • Refer to the Troubleshooting menu in the add-on.


Use of this add-on is permitted subject to your obligations, including data privacy obligations, under your agreement with Splunk and Splunk's Privacy Policy.


  • Jason Conger
  • Ryan Lait
  • Johnny Blizzard

Third-party software attributions

Refer to the README.md file included in this package for details.

Release Notes

Version 3.2.0
Sept. 2, 2021
  • New input to collect Azure Active Directory Groups
  • New alert action to stop an Azure Virtual Machine
  • New alert action to add a user to a group
  • New alert action to dismiss an Azure Security Center alert
  • jQuery updates

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