As discovered tonight, popular download website, Fosshub, has been compromised.
Hackers have targeted popular downloads such as Audacity, WinDirStat, qBittorrent, MKVToolNix, Spybot Search&Destroy, Calibre, SMPlayer, HWiNFO, MyPhoneExplorer, IrfanView and others.
When installing these programs from Fosshub, you will be infected with malware. This malware will re-write your MBR and you will not longer be able to boot into your operating system.
CultOfTheRazor has claimed responsibility.