There is a new version of the Shylock malware that is now capable of spreading through Skype. The new version is spreading mainly in the U.K., Europe and U.S. and is playing off the fact that Microsoft is about to kill its Messenger application in favor of Skype. Researchers at CSIS in Denmark say the latest version includes a plugin named msg.gsm that uses the chat function in Skype in order to spread to new machines. The malware relies on a network of infected Web sites to perform drive-by download attacks.
Source: https://threatpost.com/new-version-shylock-malware-spreading-through-skype-011713/77416/