Hi, thanks for using JustAnswer.com I am Cris and will be glad to assist you.
I use ClamXav for virus removal on Mac's. Did you use it and not find anything on your Mac?
It does search for both but it is somewhat basic. Anything free will be basic, I highly recommend purchasing and installing Eset Nod 32. It is the best antivirus software which also searches for malware and it a real-time protection. It ranks first in detection and removal rate against all anti virus software on the market.
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