Sorry for posting false postive here, I sent few messages to samples@eset.com but got no response yet. Clients keep complaining me about the alert.
I wrote the attached app just to download updated package for replacing the old one. I've got 2 other files which are 60MB so I can't attached them here.
I checked them via virustotal.com and got "a variant of MSIL/Packed.Confuser.J suspicious".
Please help!