Data Source: Sysmon EventID 8

Date: 2025-01-23

ID: df7a786c-ade0-48f0-8596-26f10d169f7d

Author: Patrick Bareiss, Splunk

Description

Logs the creation of a new thread in a process, including details about the thread ID, start address, and source process.

Details

Property	Value
Source	`XmlWinEventLog:Microsoft-Windows-Sysmon/Operational`
Sourcetype	`xmlwineventlog`
Separator	EventID

Supported Apps

Splunk Add-on for Sysmon (version 4.0.3)

Event Fields

+ Fields

  <span class="pill kill-chain">_time</span>
  
  <span class="pill kill-chain">Channel</span>
  
  <span class="pill kill-chain">Computer</span>
  
  <span class="pill kill-chain">EventChannel</span>
  
  <span class="pill kill-chain">EventCode</span>
  
  <span class="pill kill-chain">EventData_Xml</span>
  
  <span class="pill kill-chain">EventDescription</span>
  
  <span class="pill kill-chain">EventID</span>
  
  <span class="pill kill-chain">EventRecordID</span>
  
  <span class="pill kill-chain">Guid</span>
  
  <span class="pill kill-chain">Keywords</span>
  
  <span class="pill kill-chain">Level</span>
  
  <span class="pill kill-chain">Name</span>
  
  <span class="pill kill-chain">NewThreadId</span>
  
  <span class="pill kill-chain">Opcode</span>
  
  <span class="pill kill-chain">ProcessID</span>
  
  <span class="pill kill-chain">RecordID</span>
  
  <span class="pill kill-chain">RecordNumber</span>
  
  <span class="pill kill-chain">RuleName</span>
  
  <span class="pill kill-chain">SecurityID</span>
  
  <span class="pill kill-chain">SourceImage</span>
  
  <span class="pill kill-chain">SourceProcessGuid</span>
  
  <span class="pill kill-chain">SourceProcessId</span>
  
  <span class="pill kill-chain">StartAddress</span>
  
  <span class="pill kill-chain">StartFunction</span>
  
  <span class="pill kill-chain">StartModule</span>
  
  <span class="pill kill-chain">SystemTime</span>
  
  <span class="pill kill-chain">System_Props_Xml</span>
  
  <span class="pill kill-chain">TargetImage</span>
  
  <span class="pill kill-chain">TargetProcessGuid</span>
  
  <span class="pill kill-chain">TargetProcessId</span>
  
  <span class="pill kill-chain">Task</span>
  
  <span class="pill kill-chain">ThreadID</span>
  
  <span class="pill kill-chain">TimeCreated</span>
  
  <span class="pill kill-chain">UserID</span>
  
  <span class="pill kill-chain">UtcTime</span>
  
  <span class="pill kill-chain">Version</span>
  
  <span class="pill kill-chain">action</span>
  
  <span class="pill kill-chain">date_hour</span>
  
  <span class="pill kill-chain">date_mday</span>
  
  <span class="pill kill-chain">date_minute</span>
  
  <span class="pill kill-chain">date_month</span>
  
  <span class="pill kill-chain">date_second</span>
  
  <span class="pill kill-chain">date_wday</span>
  
  <span class="pill kill-chain">date_year</span>
  
  <span class="pill kill-chain">date_zone</span>
  
  <span class="pill kill-chain">dest</span>
  
  <span class="pill kill-chain">dvc_nt_host</span>
  
  <span class="pill kill-chain">event_id</span>
  
  <span class="pill kill-chain">eventtype</span>
  
  <span class="pill kill-chain">host</span>
  
  <span class="pill kill-chain">id</span>
  
  <span class="pill kill-chain">index</span>
  
  <span class="pill kill-chain">linecount</span>
  
  <span class="pill kill-chain">os</span>
  
  <span class="pill kill-chain">parent_process_exec</span>
  
  <span class="pill kill-chain">parent_process_guid</span>
  
  <span class="pill kill-chain">parent_process_id</span>
  
  <span class="pill kill-chain">parent_process_name</span>
  
  <span class="pill kill-chain">parent_process_path</span>
  
  <span class="pill kill-chain">process_exec</span>
  
  <span class="pill kill-chain">process_guid</span>
  
  <span class="pill kill-chain">process_id</span>
  
  <span class="pill kill-chain">process_name</span>
  
  <span class="pill kill-chain">process_path</span>
  
  <span class="pill kill-chain">punct</span>
  
  <span class="pill kill-chain">signature</span>
  
  <span class="pill kill-chain">signature_id</span>
  
  <span class="pill kill-chain">source</span>
  
  <span class="pill kill-chain">sourcetype</span>
  
  <span class="pill kill-chain">splunk_server</span>
  
  <span class="pill kill-chain">src_address</span>
  
  <span class="pill kill-chain">src_function</span>
  
  <span class="pill kill-chain">src_module</span>
  
  <span class="pill kill-chain">tag</span>
  
  <span class="pill kill-chain">tag::eventtype</span>
  
  <span class="pill kill-chain">timeendpos</span>
  
  <span class="pill kill-chain">timestartpos</span>
  
  <span class="pill kill-chain">user_id</span>
  
  <span class="pill kill-chain">vendor_product</span>
  
</div>

Example Log

1<Event xmlns='http://schemas.microsoft.com/win/2004/08/events/event'><System><Provider Name='Microsoft-Windows-Sysmon' Guid='{5770385F-C22A-43E0-BF4C-06F5698FFBD9}'/><EventID>8</EventID><Version>2</Version><Level>4</Level><Task>8</Task><Opcode>0</Opcode><Keywords>0x8000000000000000</Keywords><TimeCreated SystemTime='2022-10-27T13:59:12.440938600Z'/><EventRecordID>362233</EventRecordID><Correlation/><Execution ProcessID='2656' ThreadID='2360'/><Channel>Microsoft-Windows-Sysmon/Operational</Channel><Computer>win-dc-ctus-attack-range-487.attackrange.local</Computer><Security UserID='S-1-5-18'/></System><EventData><Data Name='RuleName'>-</Data><Data Name='UtcTime'>2022-10-27 13:59:12.427</Data><Data Name='SourceProcessGuid'>{3381F800-8EB0-635A-1306-000000008A02}</Data><Data Name='SourceProcessId'>4864</Data><Data Name='SourceImage'>C:\Windows\SysWOW64\wermgr.exe</Data><Data Name='TargetProcessGuid'>{3381F800-8085-635A-2701-000000008A02}</Data><Data Name='TargetProcessId'>5572</Data><Data Name='TargetImage'>C:\Windows\System32\Taskmgr.exe</Data><Data Name='NewThreadId'>4964</Data><Data Name='StartAddress'>0x0000000000C20000</Data><Data Name='StartModule'>-</Data><Data Name='StartFunction'>-</Data></EventData></Event>

Source: GitHub | Version: 2