this is copied from  Marbles journal:

Ok, for all you Skype users out there, their is a new Virus going around where you get the message form someone "This is my favorite picture of you" followed by a link.
Clicking the link downloads a trojan executable file to your system that runs whenever you run Skype.
This Trojan will spam others with the link AND download Malware onto your system.
Sadly even I got in affection (and I have a masters in this crap).
Even better, Virus Scanner's don't detect the Trojan since it's a simple script executable.
It's a local hack/override of your Skype, not a true account hack but changing your password is still a good idea.

Anyways, if you're infected.. this is how you fix the program..

In Skype application

Go to, Tools >> Options... >> Advanced Settings

Click Manage other programs' access to skype

Remove any unknown application (if any)

TURN OFF SKYPE

download malwarebytes File Assassin
http://www.malwarebytes.org/products/fileassassin/

Run FileASSASSIN tool to delete the all exe file found under AppData directory

C:\Users\YOURNAME\AppData\Roaming

Yourname will be your name. For me it's Marbles, etc etc.

restore performance counter setting from backup (If any)


After you have used malwarebytes then do this online scan. This is to make sure you have nothing else hiding away.
http://www.eset.com/onlinescan/

RESET & CHANGE YOUR SKYPE PASSWORD
https://login.skype.com/account/pas.....-reset-request
(I say do this after ALL the other steps to make sure your system and account are clean, no reason to log back in with a new password only to have it get stolen.)