[WD22] .exe and virus scan

Hi,

I have created a WD22 exe with all dlls inside. The user doesn't need anything to install, only start it. So far so good.
If I upload the exe in a zip file and download it, my trend micro virus scan give me a warning about ransome ware. The exe before upload is the same as after and works without problems. Does anybody know how to disable that ? I signed the exe with a certificate but that doesn't help.