Run the installer in a VM with Wireshark or TCPView to see if it makes unexpected outbound connections, especially to command-and-control servers.
Setup or Installation:
If you could provide more details about what "Setup.rar" is for or what software it relates to, I could offer a more tailored guide. Http Www.51scope.cn Files Setup.rar
In case the file or website is related to a specific technical setup, programming, or a product, knowing the exact nature can help in providing accurate steps or recommendations. Run the installer in a VM with Wireshark
If you downloaded the .rar, do not open it with WinRAR or 7-Zip automatically. Instead: Setup or Installation :