lowercase - Learn more about the Cortex Query Language lowercase() function that converts a string field to all lowercase letters. - Administrator Guide - Cortex XDR - Cortex - Security Operations

lowercase (<string>)

The lowercase() function converts a string field value to all lowercase.

Convert all actor_process_image_name field values that are not null to lowercase, and return a list of unique values.

dataset = xdr_data 
| fields actor_process_image_name as apin 
| dedup apin by asc _time 
| filter apin != null 
| alter apin = lowercase(apin)