This is the installer/setup program for a Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application WebShieldInstall.exe, “WebShield Install” by Irrational Number Applications has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. This is a self-extracting archive and installer and has been known to bundle potentially unwanted software. It is also typically executed from the user's temporary directory.