Splunk Search

How do I use regex to search a field for content?

digital_alchemy
Path Finder

I'm searching for specific GET requests for example:

GET /wddyr.php?id=41576619113845C1EE http/1.1
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)

I want to pull out anything that matches this pattern:

{5characters}.php?id={6 random numbers}{12 characters}

The below Regex works but I can't figure out how implement it within Splunk.

[a-z,A-Z]{5}.php[?]id=[0-9]{6}[a-z,A-Z,0-9]{12}
Tags (3)
0 Karma
1 Solution

MuS
Legend

Hi digital_alchemy,

if you want to get everything into a field called for example getField use it in a search this way:

 your base search here | rex "(?<getField>[a-z,A-Z]{5}.php[?]id=[0-9]{6}[a-z,A-Z,0-9]{12})" | table getField

or split it into three different fields:

your base search here | rex "(?<getScript>[a-z,A-Z]{5}.php)[?]id=(?<getID>[0-9]{6})(?<getString>[a-z,A-Z,0-9]{12})" | table getScript getID getString

Hope this helps ...

cheers, MuS

View solution in original post

MuS
Legend

Hi digital_alchemy,

if you want to get everything into a field called for example getField use it in a search this way:

 your base search here | rex "(?<getField>[a-z,A-Z]{5}.php[?]id=[0-9]{6}[a-z,A-Z,0-9]{12})" | table getField

or split it into three different fields:

your base search here | rex "(?<getScript>[a-z,A-Z]{5}.php)[?]id=(?<getID>[0-9]{6})(?<getString>[a-z,A-Z,0-9]{12})" | table getScript getID getString

Hope this helps ...

cheers, MuS

Get Updates on the Splunk Community!

Splunk Observability Cloud’s AI Assistant in Action Series: Analyzing and ...

This is the second post in our Splunk Observability Cloud’s AI Assistant in Action series, in which we look at ...

Elevate Your Organization with Splunk’s Next Platform Evolution

 Thursday, July 10, 2025  |  11AM PDT / 2PM EDT Whether you're managing complex deployments or looking to ...

Splunk Answers Content Calendar, June Edition

Get ready for this week’s post dedicated to Splunk Dashboards! We're celebrating the power of community by ...