Certain system folders on Microsoft Windows XP are created referencing the shellclassinfo in desktop.ini, allowing for executables to be masked as elsewise.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/33372/adv-desktopini.txt
Source: https://packetstormsecurity.com/files/33372/adv-desktopini.txt.html