FYI, the former name of YAC is iSafe, so iSafe can be considered as a part of YAC.
Elex are fraudsters, most likely stealing your data while they’re “scanning”…
YAC = StolenWare
https://blog.malwarebytes.org/fraud-scam/2015/03/yet-another-cleaner-yet-another-stealer/
I tried to install it, to give it a try!
Detection, 2015-04-05 20:16:23, ADMIN, Protection, Malware Protection, File, FraudTool.YAC, C:\Users\AppData\Local\Temp\iSafeDownloader.exe, Quarantine, [43b4a6c2cac02b0bb60fb085aa58857b]
Malwarebytes didnt like it.
This program is stealing signatures from malwarebytes.