Is there a way to make a dll file undetectable?

I have a harmless joke "virus" that is a fake hack .dll with a fake "injector" that displays a message on the screen that i want to send as a friend as a real hack! only problem is is that every AV hates it. Is there any way to make a dll virus undetectable?

Hope this is the right section.

BTW i tried google and waisted my time on outdated stuff and other forums that you need to sign up for (which i dont want to, ill stay here).

Hope someone can help me...

sana sali nyo ako ditong hacking/yea

Cool anyone else want to make a comment? maybe something that makes sense to me

this isn't a comment

This also isnt helpful... i guess close this since its just a spot for spammers to say stupid things

I doubt you could fool any decent AV by just tweaking the file /

Your best bet is to remake it and use your own methods rather than the "normal" ones.

Change the way its coded ? i havve no idea

Yea i gave up on this. Oh well im not a coder and maybe i shouldnt be pissing people off with fake virus's