I’ve just had the Hearthstone.exe (yes, the Blizzard game) flagged by the real time shield as Win32:Evo-gen [susp] when I tried to launch it. When scanned in the vault it comes back with no virus, yet restoring it and launching the games again leads it to being flagged.
Edit: This is also happening to other people, reports on Blizzard’s forums http://eu.battle.net/hearthstone/en/forum/topic/16885219773#5