I downloaded free file sync from its official website. Malwarebytes 3 premium automatically caught it as PUP and quarantined it (look below for the report).
I searched the web, and there are various opinions about it. Some say it's malware, some say it's OpenCandy, or simply false flag.
The official website says it never contains virus/malware, and that it only contains advertising. Other people say that the window to manually opt-out of crapware within the installation process disappears within a blink of a sec (before you can click on it).
Aditionally freefilesync says that you can donate money to use the advertise-free version.
If I could simply opt-out, it wouldn't be a problem, but some say it's not possible to do this. Others even insist that there is malware hidden inside the program. How can I find out if there really is malware in it or if it's flagged by malwarebytes because it could install toolbars etc.?
Here is my malwarebytes report on it:
-Blocked Malware Details-
PUP.Optional.BundleInstaller.Generic, C:\Users\***censored***\Downloads\FreeFileSync_9.3_Windows_Setup.exe, Quarantined, , ,1.0.2616