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The following analytic utilizes PowerShell Script Block Logging (EventCode=4104) to identify the [Adsisearcher] type accelerator being used to query Active Directory for domain groups. Red Teams and adversaries may leverage [Adsisearcher] to enumerate domain users for situational awareness and Active Directory Discovery.

  • Type: TTP
  • Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
  • Datamodel: Endpoint
  • Last Updated: 2021-08-24
  • Author: Teoderick Contreras, Mauricio Velazco, Splunk
  • ID: de7fcadc-04f3-11ec-a241-acde48001122


ID Technique Tactic
T1087.002 Domain Account Discovery
T1087 Account Discovery Discovery
`powershell` EventCode=4104 Message = "*[adsisearcher]*" Message = "*objectcategory=user*" Message = "*.findAll()*" 
| stats count min(_time) as firstTime max(_time) as lastTime by EventCode Message ComputerName User 
| `security_content_ctime(firstTime)` 
| `security_content_ctime(lastTime)` 
| `adsisearcher_account_discovery_filter`

Associated Analytic Story

How To Implement

The following Hunting analytic requires PowerShell operational logs to be imported. Modify the powershell macro as needed to match the sourcetype or add index. This analytic is specific to 4104, or PowerShell Script Block Logging.

Required field

  • _time
  • EventCode
  • Message
  • ComputerName
  • User

Kill Chain Phase

  • Reconnaissance

Known False Positives

Administrators or power users may use this command for troubleshooting.


Risk Score Impact Confidence Message
25.0 50 50 powershell process having commandline $Message$ for user enumeration


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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