The software (author is "10sIT Oy") looks like an installer:
Including several of these trick choices:
It either installs, or downloads something:
I'm not sure whether this file is the only one that gets downloaded, but I have uploaded it in another folder of the same Mega account:
"https://mega.nz/folder/4pp0RaTa#bnP3L6aucOoF-Whapllr6g"
But there's more: this Setup.exe file isn't detected as a virus either, but when I went to upload it (as to say I was in Kaspersky's Analyze page, and clicked on Browse) my Brave browser strangely opened this folder:
C:\Users\User\AppData\Local\Microsoft\Windows\INetCache\IE\V09IP0KU
Which contained what seems to be installers for an old beta of 7zip. I checked my 7zip installation in program files, and it had been indeed created a few minutes ago. I have also uploaded more files that were around that location in Appdata, and might be part of this.