It's unclear exactly what the malware identified by this particular name by Symantec actually consists of, but as far as I can tell, it's not actually a threat to Mac users. Where is the file that Symantec is identifying as this malware? What is its exact file name and path?
The very (underscore and bold underscore) is to follow Norton's instructions for uninstalling their software. Thomas is absolutely correct that you should uninstall Norton's products!!!!