name: Powershell Script Block Logging 4104
id: 5cfd0c72-d989-47a0-92f9-6edc6f8d3564
version: 4
creation_date: '2024-05-22'
modification_date: '2026-05-13'
author: Patrick Bareiss, Splunk
description: Logs detailed content of PowerShell script blocks as they are executed, including the full command text and context for the execution.
mitre_components:
    - Script Execution
    - Command Execution
    - Process Metadata
    - OS API Execution
    - Application Log Content
source: XmlWinEventLog:Microsoft-Windows-PowerShell/Operational
sourcetype: XmlWinEventLog
separator: EventID
separator_value: '4104'
supported_TA:
    - name: Splunk Add-on for Microsoft Windows
      url: https://splunkbase.splunk.com/app/742
      version: 10.0.1
fields:
    - _time
    - ActivityID
    - Channel
    - Computer
    - EventCode
    - EventData_Xml
    - EventID
    - EventRecordID
    - Guid
    - Keywords
    - Level
    - MessageNumber
    - MessageTotal
    - Name
    - Opcode
    - Path
    - ProcessID
    - RecordNumber
    - ScriptBlockId
    - ScriptBlockText
    - SystemTime
    - System_Props_Xml
    - Task
    - ThreadID
    - UserID
    - Version
    - date_hour
    - date_mday
    - date_minute
    - date_month
    - date_second
    - date_wday
    - date_year
    - date_zone
    - dvc
    - dvc_nt_host
    - event_id
    - eventtype
    - host
    - id
    - index
    - linecount
    - punct
    - signature_id
    - source
    - sourcetype
    - splunk_server
    - tag
    - tag::eventtype
    - timeendpos
    - timestartpos
    - user_id
    - vendor_product
output_fields:
    - dest
    - signature
    - signature_id
    - user_id
    - vendor_product
    - Guid
    - Opcode
    - Name
    - Path
    - ProcessID
    - ScriptBlockId
    - ScriptBlockText
field_mappings:
    - data_model: cim
      data_set: Endpoint.Processes
      mapping:
          Computer: Processes.dest
          Path: Processes.process_path
          ScriptBlockId: Processes.process_id
          ScriptBlockText: Processes.process
          UserID: Processes.user_id
    - data_model: ocsf
      mapping:
          Computer: device.hostname
          Path: process.file.path
          ScriptBlockId: process.uid
          ScriptBlockText: process.cmd_line
          UserID: actor.user.uid
example_log: <Event xmlns='http://schemas.microsoft.com/win/2004/08/events/event'><System><Provider Name='Microsoft-Windows-PowerShell' Guid='{A0C1853B-5C40-4B15-8766-3CF1C58F985A}'/><EventID>4104</EventID><Version>1</Version><Level>5</Level><Task>2</Task><Opcode>15</Opcode><Keywords>0x0</Keywords><TimeCreated SystemTime='2022-05-02T12:39:41.710158900Z'/><EventRecordID>112748</EventRecordID><Correlation ActivityID='{547232D9-5B2B-0007-6CA6-72542B5BD801}'/><Execution ProcessID='5336' ThreadID='2228'/><Channel>Microsoft-Windows-PowerShell/Operational</Channel><Computer>win-dc-mhaag-attack-range-270.attackrange.local</Computer><Security UserID='S-1-5-21-2059343465-2300599999-2417073716-500'/></System><EventData><Data Name='MessageNumber'>1</Data><Data Name='MessageTotal'>1</Data><Data Name='ScriptBlockText'>function New-Mutex($MutexName) {