with files inside? If so, right click the .exe file (or .ex_ extension), choose Properties, and see what program it came from. If there is a .txt or .tx_ file in there, right click, choose OPEN WITH NOTEPAD and read it as it probably identifies even more the program that the folder goes to.
Somehow, when I rearranged my desktop icons so there would be a single set in alphabatical order, I ended up with one entitled New Post that has several nonshortcut entries with dll, vx_, inf, cat, dl_, and ex_ extensions. I presume there is no need for these to be on the desktop but what should I do with them, if anything? grandpaw