NS removed a file & I might want it back.

NS 22.9 just removed a file it said was malicious, or words to that effect. I only caught a glimpse of the name before it quickly disappeared from the screen but it was a dll file. It's not in Quarantine. How do find our what it was and if I need it for a program that I might use in the next day or two? I was never offered an option to keep or delete or quarantine. I got the message it was removed & that was that. Where is it so that I can make the determination what to do with it?