Well, ePO means you are using the VirusScan Enterprise edition, correct?
VSE (using ePO if you like) can have it's Artemis or GTI settings changed. I would check the setting you currently have in place for your systems. By default, this setting is set to Low I believe.
Stinger, on the other hand, is not meant to be used broadly, but rather after a problem has been identified and specialty removal employed. It too has Artemis (or GTI) technology to help with 0-day infections. By default, it has a higher level of GTI/Artemis set. So, by it's default settings, Stinger is more likely to find False Positives when Artemis is the discovering technique. (By the way, Artemis or GTI, is simply a discovery of a 'Suspected' infection based on heuristics and other system's similar detections based on the web. So, GTI does not help remove a virus or malware, simply identify a potential file.)
If you reduce the Artemis setting in Stinger, does Stinger still detect your files as potentially infected? How about changing VSE's Artemis level; does this detect these files?
Thanks for your prompt reply. I have increased the Heuristic scanning level from "Very Low" to "Medium" in ePO. VSE 8.8 is now detecting and deleting the files reported as Artemis!294EC52C61C7 trojan (and a few other suspect files with other detections).
I have written an ePO query to display the detection information and deletions, and I am now chasing user machines and removable devices around our fairly complex environment.