Assuming the Artemis detection of the Trojan is not your major worry right now .....
There was a post from someone with an (almost) identical problem a while back, and he found a solution which worked. Try it and see if it works for you. It's at https://community.mcafee.com/thread/36486
Moved to Artemis discussions so that department can make changes if needed.
This is related to ZeroAccess and we have coverage for this as ZeroAccess.ep with current DATs.
We detect this as ZeroAccess.ep with current DATs. Update the product and run a full On Demand Scan to clean the infection. A restart may be necessary to complete the cleaning procedure for the detections occurred during the On Demand Scan. If the issue still persists, try these McAfee tools in the following order:
Please ensure that Rootkit scanning is enabled under the Preferences tab for Stinger. You may set the sensitivity level to Very High if you would like it to detect more malware heuristically.
Restart the machine.
Update the product to latest DATs(check if the update completes successfully) and perform a full scan to ensure there are no more infections.