Splunk Search

rex expression

pil321
Communicator

I need to extract the account name from this snippet of a Windows security event log:

Account For Which Logon Failed:
    Security ID: NULL SID
    Account Name: Joe User
    Account Domain: Some.Domain

This is the expression I'm using:

rex "Failed:\s+.*\s+Account\sName:\s+(?<TargetAccount>\S+)\s"

Which gives me this result:

 TargetAccount
          Joe

How do I account for the white space to get the rest of the account name to show up in the result?

Tags (1)
0 Karma
1 Solution

gcusello
SplunkTrust
SplunkTrust

modify your regex in this way

Failed:\s+.*\s+Account\sName:\s+(?<TargetAccount>.*)

verify it on https://regex101.com/
Bye.
Giuseppe

View solution in original post

0 Karma

gcusello
SplunkTrust
SplunkTrust

modify your regex in this way

Failed:\s+.*\s+Account\sName:\s+(?<TargetAccount>.*)

verify it on https://regex101.com/
Bye.
Giuseppe

0 Karma

sundareshr
Legend

Try this

.... | rex "Name:\s(?<TargetAccount>[^\n\r]+)"

MuS
SplunkTrust
SplunkTrust

upvoted, because the regex is matching faster 😉

0 Karma
Get Updates on the Splunk Community!

Index This | Why did the turkey cross the road?

November 2025 Edition  Hayyy Splunk Education Enthusiasts and the Eternally Curious!   We’re back with this ...

Enter the Agentic Era with Splunk AI Assistant for SPL 1.4

  &#x1f680; Your data just got a serious AI upgrade — are you ready? Say hello to the Agentic Era with the ...

Feel the Splunk Love: Real Stories from Real Customers

Hello Splunk Community,    What’s the best part of hearing how our customers use Splunk? Easy: the positive ...