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Aside from being used to promote genuine domain controllers, the DSRM (Directory Services Restore Mode) account can be used to persist within a Domain. A DC can be configured to allow the DSRM account to logon & be used in the same way as a local administrator account. This detection is looking for alterations to the behaviour of the account via registry.

  • Type: TTP
  • Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
  • Datamodel: Endpoint
  • Last Updated: 2023-11-07
  • Author: Dean Luxton
  • ID: 08cb291e-ea77-48e8-a95a-0799319bf056




ID Technique Tactic
T1098 Account Manipulation Persistence, Privilege Escalation
Kill Chain Phase
  • Installation
  • Exploitation
  • DE.CM
  • CIS 10
| tstats `security_content_summariesonly` min(_time) as _time from datamodel=Endpoint.Registry where Registry.registry_path= "*\\System\\CurrentControlSet\\Control\\Lsa\\DSRMAdminLogonBehavior" Registry.registry_value_data IN ("*1","*2") by Registry.action Registry.registry_path Registry.registry_value_data Registry.registry_value_type Registry.process_guid Registry.dest Registry.user 
| `drop_dm_object_name(Registry)` 
| join type=outer process_guid [
| tstats `security_content_summariesonly` count FROM datamodel=Endpoint.Processes by Processes.user Processes.process_name Processes.process Processes.dest Processes.parent_process_name Processes.parent_process Processes.process_guid 
| `drop_dm_object_name(Processes)`] 
| table _time action dest user parent_process_name parent_process process_name process process_guid registry_path registry_value_data registry_value_type 
| `windows_ad_dsrm_account_changes_filter`


The SPL above uses the following Macros:

:information_source: windows_ad_dsrm_account_changes_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
  • Registry.registry_value_data
  • Registry.registry_path
  • Registry.dest
  • Registry.user

How To Implement

The detection is based on data that originates from Endpoint Detection and Response (EDR) agents. These agents are designed to provide security-related telemetry from the endpoints where the agent is installed. To implement this search, you must ingest logs that contain the process GUID, process name, and parent process. Additionally, you must ingest complete command-line executions. These logs must be processed using the appropriate Splunk Technology Add-ons that are specific to the EDR product. The logs must also be mapped to the Processes node of the Endpoint data model. Use the Splunk Common Information Model (CIM) to normalize the field names and speed up the data modeling process.

Known False Positives

Disaster recovery events.

Associated Analytic Story


Risk Score Impact Confidence Message
100.0 100 100 DSRM Account Changes Initiated on $dest$ by $user$

: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

source | version: 2