When run, it will infect other executables it could find, although it is not able to infect files in the Windows directory. It also creates a hidden temporary file called "temp.exe" which will eventually get deleted afterwards.
The payload activates on Friday the 13th of any month. When run on that date, it shows a picture of a keyboard at the top-left corner of the screen and at the same time, creates endless pop-ups with the following text over a small black rectangle:
Damn, nice ass!