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QRadar: Microsoft Windows Security DSM does not extract usernames from events when they end with a dollar sign "$"

Troubleshooting


Problem

When an event for the Microsoft Windows Security DSM has a user ending with dollar sign "$", this user is not extracted.

Symptom

For example, in this Windows Security event:
<13>Jun 23 12:03:29 MyServerName AgentDevice=WindowsLog	AgentLogFile=Security	
PluginVersion=7.3.0.41	Source=Security	Computer=Server	OriginatingComputer=x.x.x.1	
User=SYSTEM	Domain=NT AUTHORITY	EventID=540	EventIDCode=540	EventType=8	
EventCategory=2	RecordNumber=27741234	TimeGenerated=1656000205	
TimeWritten=1656000205	Level=0	Keywords=0	Task=0	Opcode=0	
Message=Successful Network Logon:   User Name: SERVERFLOW2$   Domain:…
The username SERVERFLOW$ is not extracted, even if the event is open with the DSM Editor:

image-20220701160527-1

Note: By default the Microsoft Windows Security DSM extracts the username information from the "Message" field and not from the "User" metadate field, which usually says SYSTEM when the user is a system account.

Document Location

Worldwide

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Document Information

Modified date:
20 February 2024

UID

ibm16602735