W97M Downloader on Mac

Are you running Windows? Mac OS is different from Windows OS.

https://www.f-secure.com/v-descs/w97m_downloader.shtml

The file could be in an email attachment - so, check your emails, but do not open an attachment unless you know what it is.

Did you know that Catalina now has a separate, not accessible volume where the Mac OS is, it is read only and cannot be changed/written to? That means that your system is secure, so why are you running Norton's? The only volume anything can be altered is the MacHD - Data volume where your apps and files are.

Ok, so this is part of major security changes Apple has made with the OS:

Your hard drive is considered a "container" that contains the OS, files, apps - everything. To make the OS more secure from viruses, etc., they have now "quarantined" the most important system files in one volume - your Mac HD. Then there is a second volume, Mad HD - Data which contains your apps, files, etc - that one can be added to, written to - in other words, changes you make daily by working in apps, etc.

This virus would need access to your OS system in order to do bad things - which it cannot do in Catalina. And, in fact, it cannot do anything unless you are running Windows. Norton's can play havoc with the Mac OS - personally, I would not allow it anywhere near any of my Macs.

Please read this discussion, especially Kurt Lang's contribution. Trojan Virus on macbook pro - Apple Community

Thanks, had not seen that.

No, thank you! for your brilliant and concise explanation of Catalina's security setup -- and the tip to the OP about Norton.