Of course I installed a new copy of Windows 7 x64, but I kept a copy of the .exe file where the trojan is. I'm looking for a way to get him here for the exams.
Yesterday I installed a .exe and had a surprise. My paid Kaspersky immediately detected a Trojan, but he can't remove it. About "Trojan.Win32.Ekstak.vho" detected no information available. Google Chrome cannot be uninstalled.