All --- if McAfee detects a threat please consider that as a threat unless its confirmed to be safe... if you know the application that is being picked up only then the question of a possible incorrect detection kicks in.. just because a detection is Artemis does not necessarily mean its bad. you could co-relate the Artemis detection to being the immune response you see our body doing to new or strange diseases as an effort to combat them. (antibodies at work..)..
Now best course of approach would be to take a look at the Interface and see if points to a folder or location and that will help indicate what file has been detected
if there are no conclusive location (either due to long winding path or its missing as in this case) i would recommend taking a look in Quarantine section or as peter called out to see if its waiting for user to take action..
Finally (my favorite and the easiest way) if to take a log at the On Access logs ( a simple text file)-- from Start>run > c:\ProgramData\McAfee\VirusScan\Logs\OAS.LOG and attach that file as a response to the thread for helper to take a look