mirror of
https://github.com/splunk/security_content
synced 2026-06-08 17:32:49 +00:00
Eric McGinnis
77 lines
3.0 KiB
YAML
77 lines
3.0 KiB
YAML
name: Windows Event Log Defender 1121
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id: 84a254c5-7900-4b52-a324-a176adb7c11d
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version: 4
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creation_date: '2024-05-22'
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modification_date: '2026-05-13'
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author: Patrick Bareiss, Splunk
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description: Logs an event when a Windows Defender attack surface reduction rule fires in block mode.
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mitre_components:
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- Application Log Content
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- Host Status
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- Process Creation
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source: WinEventLog:Microsoft-Windows-Windows Defender/Operational
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sourcetype: XmlWinEventLog
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separator: EventCode
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separator_value: '1121'
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supported_TA:
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- name: Splunk Add-on for Microsoft Windows
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url: https://splunkbase.splunk.com/app/742
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version: 10.0.1
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fields:
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- _time
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- ActivityID
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- Channel
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- Computer
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- Detection_Time
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- Engine_Version
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- EventCode
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- EventData_Xml
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- EventID
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- EventRecordID
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- Guid
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- ID
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- Inhertiance_Flags
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- Involved_File
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- Keywords
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- Level
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- Name
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- New_Value
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- Old_Value
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- Opcode
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- Parent_Commandline
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- Path
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- ProcessID
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- Process_Name
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- Product_Name
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- Product_Version
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- RecordNumber
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- RuleType
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- Security_intelligence_Version
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- SystemTime
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- System_Props_Xml
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- Target_Commandline
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- Task
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- ThreadID
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- User
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- UserID
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- Version
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- dvc
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- dvc_nt_host
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- event_id
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- eventtype
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- host
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- id
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- index
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- linecount
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- punct
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- signature_id
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- source
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- sourcetype
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- splunk_server
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- tag
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- tag::eventtype
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- timestamp
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- user_id
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- vendor_product
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example_log: <Event xmlns='http://schemas.microsoft.com/win/2004/08/events/event'><System><Provider Name='Microsoft-Windows-Windows Defender' Guid='{11cd958a-c507-4ef3-b3f2-5fd9dfbd2c78}'/><EventID>1121</EventID><Version>0</Version><Level>3</Level><Task>0</Task><Opcode>0</Opcode><Keywords>0x8000000000000000</Keywords><TimeCreated SystemTime='2023-11-20T16:29:48.9847638Z'/><EventRecordID>2975</EventRecordID><Correlation ActivityID='{fb36f2d9-5b89-4566-8af5-7c1212b4797f}'/><Execution ProcessID='3488' ThreadID='7496'/><Channel>Microsoft-Windows-Windows Defender/Operational</Channel><Computer>researchvmhaa</Computer><Security UserID='S-1-5-18'/></System><EventData><Data Name='Product Name'>Microsoft Defender Antivirus</Data><Data Name='Product Version'>4.18.23100.2009</Data><Data Name='Unused'></Data><Data Name='ID'>3B576869-A4EC-4529-8536-B80A7769E899</Data><Data Name='Detection Time'>2023-11-20T16:29:48.984Z</Data><Data Name='User'>researchvmhaa\research</Data><Data Name='Path'>C:\Users\research\AppData\Local\Temp\script.vbs</Data><Data Name='Process Name'>C:\Program Files\Microsoft Office\root\Office16\WINWORD.EXE</Data><Data Name='Security intelligence Version'>1.401.912.0</Data><Data Name='Engine Version'>1.1.23100.2009</Data><Data Name='RuleType'>ENT\ConsR</Data><Data Name='Target Commandline'></Data><Data Name='Parent Commandline'>"C:\Program Files\Microsoft Office\root\Office16\WINWORD.EXE" </Data><Data Name='Involved File'></Data><Data Name='Inhertiance Flags'>0x00000000</Data></EventData></Event>
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