Malware
Upatre
Upatre is primarly a downloader. It has been discovered in 2013 and since that time it has been widely updated.
Upatre is a Windows malware family.
Background
Upatre functions chiefly as a downloader. First seen in 2013, it has been heavily revised in the years since. Its role is to fetch additional malware onto victim machines; notably, it was a prolific delivery channel for Gameover P2P during 2013-2014 and later for Dyre in 2015.
Source: Malpedia (Fraunhofer FKIE).