Bitdefender Free Antivirus Detected an Injection: Injection was being performed by OpenWith.exe

I just tested my own C:\Windows\System32\OpenWith.exe with Virus Total and it generated this report, where none of the antivirus engines detected it as a virus, including BitDefender. You could verify that you're using the latest virus definitions and try again.

If the problem isn't solved by the latest virus definitions, I suggest to use Virus Total to upload and test your own OpenWith.exe. If you get the same results as me, then this is just a false positive.

However, if any one engine found it as infected, then see the post How can I remove malicious spyware, malware, adware, viruses, trojans or rootkits from my PC?

Note: In case the above error is misleading, it's possible that BitDefender is not detecting OpenWith.exe as a virus, but rather the application you're using to open the file with. So test this application in the same way.