According to Panda Security researcher Bart Blaze, cybercriminals are using Skype to distribute the Caphaw (Shylock) malware, which is used to target customers of large banks and financial institutions.
According to the researcher, the Caphaw banking trojan sends a malicious file to all of the victim's contacts. Unlike other similar attacks, there is no message accompanying the file. Typically, users are prompted to view some photos or access interesting content via malicious links.
To protect yourself from such threats, it is recommended that you do not download unknown files, especially if they are executable. Also, make sure that your Skype is properly configured so that only your personal contacts are able to send you messages and files.
If you believe you have been the victim of such an attack, scan your computer with an up-to-date antivirus. Finally, as a precautionary measure, it is recommended to change your passwords and regularly monitor your bank account for any unauthorized transactions.
For additional technical details about the threat, you can visit Bart Blaze's blog.
