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The following analytic identifies an Azure AD account successfully authenticating from more than one unique Ip address in the span of 5 minutes. This behavior could represent an adversary who has stolen credentials via a phishing attack or some other method and using them to access corporate online resources around the same time as a legitimate user. As users may behave differently across organizations, security teams should test and customize this detection to fit their environments.

  • Type: TTP
  • Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud

  • Last Updated: 2023-01-24
  • Author: Mauricio Velazco, Splunk
  • ID: be6d868d-33b6-4aaa-912e-724fb555b11a




ID Technique Tactic
T1110 Brute Force Credential Access
T1110.001 Password Guessing Credential Access
T1110.003 Password Spraying Credential Access
Kill Chain Phase
  • Exploitation
  • DE.CM
  • CIS 10
 `azuread` properties.authenticationDetails{}.succeeded=true category=SignInLogs 
| rename properties.* as * 
| bucket span=5m _time 
| stats  dc(ipAddress) AS unique_ips values(ipAddress) as ipAddress values(appDisplayName) by _time, userPrincipalName 
| where unique_ips > 1 
| `azure_ad_successful_authentication_from_different_ips_filter`


The SPL above uses the following Macros:

:information_source: azure_ad_successful_authentication_from_different_ips_filter is a empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.

Required fields

List of fields required to use this analytic.

  • _time
  • properties.status.errorCode
  • category
  • properties.authenticationDetails
  • properties.userPrincipalName
  • properties.ipAddress
  • properties.appDisplayName

How To Implement

You must install the latest version of Splunk Add-on for Microsoft Cloud Services from Splunkbase ( You must be ingesting Azure Active Directory events into your Splunk environment through an EventHub. Specifically, this analytic leverages the SignInLogs log category.

Known False Positives

A user with successful authentication events from different Ips may also represent the legitimate use of more than one device. Filter as needed and/or customize the threshold to fit your environment.

Associated Analytic Story


Risk Score Impact Confidence Message
56.0 70 80 User $userPrincipalName$ has had successful authentication events from more than one unique IP address in the span of 5 minutes.

:information_source: The Risk Score is calculated by the following formula: Risk Score = (Impact * Confidence/100). Initial Confidence and Impact is set by the analytic author.


Test Dataset

Replay any dataset to Splunk Enterprise by using our tool or the UI. Alternatively you can replay a dataset into a Splunk Attack Range

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