Welcome to the community @DarkenCroix. 
This is called a “false positive”. Trainers will trigger antiviruses every now and again, no matter where on the internet you get them from, just because of the way they work. They are harmless. You can find this information by using the search feature in the top-right of the forum.
See here for more information and a resolution: Windows Defender marked WeMod as a Trojan.