RAT
WebMonitor RAT
aka RevCode
On its website, Webmonitor RAT is described as 'a very powerful, user-friendly, easy-to-setup and state-of-the-art monitoring tool.
WebMonitor RAT, also known as RevCode, is a Windows rat.
Background
The vendor's own site markets Webmonitor RAT as a powerful, easy-to-configure, cutting-edge monitoring solution, stressing that it is fully native and therefore runs on every Windows version and language from Windows XP onward while remaining compatible with all crypters and protectors. In their write-up, Unit42 highlights that it is sold as C2-as-a-service and flags the contentious fact that the builder can produce client binaries which display no popups or dialogs during installation or while running on a target machine.
Source: Malpedia (Fraunhofer FKIE).