I just downloaded the new 2017 version, and it is a rebrand of
Plumbytes Anti-malware. I scanned both the installer and executable in the Program Files folder at Virus Total, and neither was detected by ESET. The installer is detected by a few products as being a downloader, as it downloads the full setup file, but Dr Web is the only product that detects the AntiMalware.exe file in Program Files. It is detected as Program.Unwanted.1848, since Dr Web chooses not to identify unwanted software by its actual name.
In the past, it was not a rebrand. They had developed thier own UI, and tt was using a major AV engine, I forget which one. It may have been Bitdefender, Vipre or even Avria. I'm not too sure, as it's been a while.