It flagged on the .part download (basically just a tmp file in Windows) with the following: https://www.microsoft.com/en-us/wdsi/threats/malware-encyclopedia-description?name=Trojan%3AScript%2FWacatac.B!ml&threatid=2147735503
It’s not at all uncommon for Windows to flag on zip archives though, and I am curious to see if it happens with a 7z, gzip, tar, or rar as well.
Honestly though, the best way to keep from false flags is to just submit it to the various AV/AM providers: https://www.microsoft.com/en-us/wdsi/filesubmission for MS Defender (as an example)
To the OP for this thread: Trojan:SOMETHING does not mean it was found in a Folder named Trojan, it means that the Family of the malware is Trojan, and the “Species” of Trojan is whatever follows the colon.