I am having this exact problem. I hope the ability to trust quaranteened files is added back. In the meantime, here's the detection number I got for cgminer.exe which McAfee thinks is an Artemis Trojan. Please clear up that misconception. I trust cgminer and want to use it. If there is now a way to add to trusted site, please advise.
As that other thread was so old I've given you your own.
You haven't mentioned the Artemis number.
Trusting is allowed at present only for PUP's (Possibly Unwanted Programs) but we believe that trusting for the Real-Time Scanner is being re-introduced very soon.
Until then follow the guidelines here: https://community.mcafee.com/thread/2016
I see you've posted the Artemis number in a separate thread. Someone from McAfee labs will spot it soon hopefully and respond there.