Any way to make winlogbeat config case-insensitive?

Elastic Stack Beats
1

The title pretty much says it all. I am trying to figure out if there is a way to make my winlogbeat config conditions case insensitive so when I want to exclude something for lets say a file path, I do not have to add a different exclusion for Windows\folder, windows\folder, WINDOWS\folder, etc..

Any help would be greatly appreciated.

2

Do you have an example of your existing conditions that you can share? If you use a rexexp condition you can make it case-insensitive.

- drop_event:
    when.regexp.message: '(?i)windows'
3

Is there any performance impact using regex? Here is an example:

- drop_event.when.or: 
  - contains.process.command_line: 'C:\windows\scriptfolder\'

This works great until the command line contains C:\Windows\scriptfolder\ instead.

4

Hard to say what the difference would be without measuring. In the overall time of processing an event the time difference is likely a minuscule slice.