Splunk Search

Blacklist WinEventLog::/Security with user names ending in $

ericrenfro
New Member

I'm trying to get a blacklisted log entry that works on Universal Forwarders to filter out specific event codes with user fields that end in $ in their value.

What I have now, works on my test environment with uploaded sample logs, but not directly on the Universal Forwarder itself:

blacklist1 = EventCode="(4624|4634)" user=".*\$"
blacklist2 = EventCode="4672" Account_Name=".*\$"

What can I do to get this right so it actually works? I know that in the event log, raw, the matching line actually is space indented and something like:

...
Subject:
  Security ID:    S-1-5-18
  Account Name:   something$
  Account Domain:   domain
...

Thank you!

0 Karma

spayneort
Contributor

Try these:

blacklist1 = EventCode="4624" Message="(?ms)New\sLogon:.*?Account\sName:[^\n]+\$$"
blacklist2 = EventCode="(4634|4672)" Message="(?m)Account\sName:[^\n]+\$$"
Get Updates on the Splunk Community!

A Season of Skills: New Splunk Courses to Light Up Your Learning Journey

There’s something special about this time of year—maybe it’s the glow of the holidays, maybe it’s the ...

Announcing the Migration of the Splunk Add-on for Microsoft Azure Inputs to ...

Announcing the Migration of the Splunk Add-on for Microsoft Azure Inputs to Officially Supported Splunk ...

Splunk Observability for AI

Don’t miss out on an exciting Tech Talk on Splunk Observability for AI! Discover how Splunk’s agentic AI ...