Getting Data In

Nullqueue Windows Paths Regex

gclaytontmwa
New Member

Trying to send all events with this contained to nullqueue:

Host Application = C:\WINDOWS\system32\WindowsPowerShell\v1.0\PowerShell.exe -NoLogo -Noninteractive -NoProfile -ExecutionPolicy Bypass & 'C:\WINDOWS\CCM\SystemTemp\02160779-88dd-4e84-96cc-7a1313cd97d9.ps1'

Here are my props & transforms entries:

[WinEventLog:Splunk-PowerShell]
TRANSFORMS-suppress-ps = suppress-powershell

[suppress-powershell]
REGEX=^Host\s?Application\s?=\s?C:\\WINDOWS\\system32\\WindowsPowerShell\\v1\.0\\PowerShell\.exe\s-NoLogo\s-Noninteractive\s-NoProfile\s-ExecutionPolicy\sBypass\s&\s'C:\\WINDOWS\\CCM\\SystemTemp\\[\d\w]{8}-[\d\w]{4}-[\d\w]{4}-[\d\w]{4}-[\d\w]{12}\.ps1'(\sFalse)?
DEST_KEY=queue
FORMAT=nullQueue

Matches when I use regex checkers like regexr. I've seen people suggest both double backslash and four backslashes for escaping, not sure which is appropriate for transforms. Using the four backslashes and the regex command in the search does work, but I need these events filtered out of indexing. I'd also like to use (?i) as a modifier for case insensitivity, but I need to get this part working first.

0 Karma

to4kawa
Ultra Champion
(?i)^Host\s?Application\s?=\s?C:.WINDOWS.system32.WindowsPowerShell.v1\.0.PowerShell\.exe\s-NoLogo\s-Noninteractive\s-NoProfile\s-ExecutionPolicy\sBypass\s&\s'C:.WINDOWS.CCM.SystemTemp.\w{8}-\w{4}-\w{4}-\w{4}-\w{12}\.ps1'(\sFalse)?

\  ⇨ .  If backslash behavior is a problem.

0 Karma
Get Updates on the Splunk Community!

Splunk Classroom Chronicles: Training Tales and Testimonials (Episode 3)

Welcome back to Splunk Classroom Chronicles, our ongoing blog series that pulls back the curtain on Splunk ...

Operationalizing TDIR: Building a More Resilient, Scalable SOC

Optimizing SOC workflows with a unified, risk-based approach to Threat Detection, Investigation, and Response ...

Almost Too Eventful Assurance: Part 1

Modern IT and Network teams still struggle with too many alerts and isolating issues before they are notified. ...