Malware
DarkVNC
According to Enigmasoft, DarkVNC malware is a hacking tool that is available for purchase online.
DarkVNC is a Windows malware family.
Background
Enigmasoft characterizes DarkVNC as a commercially available hacking tool sold online. It functions as a Virtual Network Computing service, giving attackers complete access to the targeted machine. Unlike a legitimate VNC application, however, DarkVNC runs silently in the background, so victims are unlikely to realize their systems have been compromised.
Source: Malpedia (Fraunhofer FKIE).