Trend Micro is flagging VNC along with any products that make use of it as a virus or malware. Bozteck VENM Remote Desktop Manager is one of those victims and we are currently working with Trend Micro to resolve this issue.
Until they are able to update their signature files to remove this false positive, you may be presented with a warning that vncscan.exe is a virus or malware.
As long as you downloaded the installer from our website, you can rest assure that this is a false positive and this file is not infected with anything bad.
We are very sorry for any inconvenience that Trend Micro may have caused with this.