Here is the line in the log I am working with; 
 Message=COMPUTERNAME [Monday, April 02, 2018 7:15:53 AM (GMT-06:00)]: Status of device 'COMPUTER' changed to Critical: Many viruses detected. 
 Goal;  
I would like to search my database for all logs that have the status "Many viruses detected" 
 I am newer to splunk, I need to use rex correct? I do not think the field has been extracted yet.  
 After being able to find all the computers with this log, I would like to extract the field for future use.  
My search;  
index=my_index | rex field=_raw"(?)Message=(?[a-zA-z0-9:\s[]\-,=`'."]\sMany\sviruses\sdetected" 
						
					
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