Hi Rambouu,
You can continue to love your avast av solution, because you were protected all the time by the avast Network shield that prevents you to connect to sites like this: htxp://stireadebacau.ro/ey4o.exe and to 'TR/Crypt.XPACK.Gen on there, so your computer won't even meets this malcode....
So this threat url is being detected as URL:Mal. We have detection via the shields. So as ageneral advice to all, keep these avast shields up and running, guys and gals, because they form a vital part of your ptotection,
polonus