A new virus is making the rounds that is affecting the Skype communication software. The following messages are used to spread the virus: hey is this your skype profile pic or hey, is this your new profile picture, or hey, cool profile picture, is this it. Remember that it is likely that there are other variations in the wild.
The messages are followed by a shortened link using the goo.gl url shortener. Depending on your security setup, clicking on the link may be enough to infect your computer with the trojan. If you get a dialog that is asking you what to do, make sure you cancel it right away and do not open or save it to your computer.
The messages may come from your contacts, if their computer is already infected with it, or strangers that try to message you.
The trojan adds itself to the list of third party programs with Skype access, and this is one of the ways to find out whether your system is infected with it or not. When you are in Skype, click on Tools > Options to bring up the options window of the program. Locate and click on Advanced, and there on the manage other programs' access to Skype link at the bottom. If you see programs listed here that you can't identify, remove them from Skype.
You won't be sending out messages to Skype contacts anymore once the apps have been removed from Skype's third party access list.
As a second step, I'd recommend to run an up to date antivirus solution, Malwarebytes Antimalware Free or Dr.Web CureIt to make sure that no traces of the keylogger are left on the system. What it does in addition to sending out the messages to contacts, is to log what you enter using your keyboard. The keylogger logs all input, not only what you enter when using Skype. It is therefore essential to scan the computer with antivirus software to remove the keylogger from the system. I'd recommend running multiple programs just to make sure it is completely removed.
We have received word from Skype about the issue:
Skype takes the user experience very seriously, particularly when it comes to security. We are aware of this malicious activity and are working quickly to mitigate its impact. We strongly recommend upgrading to the newest Skype version and applying updated security features on your computer. Additionally, following links – even when from your contacts – that look strange or are unexpected is not advisable.