I use openSUSE 12.3 64 bit. I was browsing some of my Windows files (I use dual boot) while having Firefox running, then inside a folder I accidentally double clicked an .url file. What happened next was, a Wine desktop briefly opened then disappeared, (I have enabled a virtual desktop on winecfg) and a new tab opened on Firefox loading the page the url seemingly pointed.
I've never seen this before. Is this a Wine feature? Not a virus/malware related?
EDIT: seems a thing named "rundll32" was the one Wine executed to run the .url....
And the file's code opening it with gedit is:
F_style what you just saw is a odd ball feature of wine.
The answer to what it is happens to be somewhere.
In the directory "~/.local/share/applications" you will find a set of files starting with wine-extension- and ending in .desktop. These are the file associating wine and application installed in wine are assocating themselves with.
wine-extension-url.desktop should contain something like this.