WORM_MSIL.BR is a hazardous and annoying worm which designed by the cyber criminals so as to steal the innocent users’ confidential information for illegal benefits. Usually, it is able to slip into the target machine by exploiting certain security vulnerabilities. Don’t underestimate this worm that can install many dangerous parasites, infect and corrupt your files severely, degrade your overall system performance dramatically, etc. Additionally, it can open a backdoor for the remote attackers and assist them to take over your PC. For the sake of PC and privacy security, it is important to promptly and thoroughly get rid of WORM_MSIL.BR from your PC.
https://blog.mightyuninstaller.com/how-to-get-rid-of-worm_msil-br-promptly-and-effectively-worm_msil-br-removal/