FaceBook Chat Hacked? Here is the resolution.

Recently, my FB profile got hacked and every chat window I clicked automatically sent message such as:
hey, lol check out this girl,what she did.. i cant believe this video : goo.gl/hAkdkbc

I guess this virus have been added to your profile in any of the apps that you have allowed or added previously.

I have resolved this issue immediately, by following steps:
Log into FaceBook at:

http://www.facebook.com/settings/?tab=privacy

On the bottom of Privacy Settings page, you can see following option:
Apps and Websites
“Edit your settings” for using apps, games and websites.

Click on ‘Edit your Settings’ and remove all or any suspicious application.

Once removed, change your B password to a strong password. Now log out and log in again and check Chat window.

It should be working.

Regards!