Yes, it focuses on the banking industry and it doesn’t really work in the manufacturing automation sector, but the credential-stealing Shylock Trojan is growing increasingly sophisticated, a new report said.
Its level of sophistication keeps rising because its creators continue adding new modules and functionalities to the man-in-the-browser malware, according to a Symantec report.
Shylock makes its loot via man-in-the-browser (MiTB) attacks designed to pilfer banking login credentials from a predetermined list of target organizations. Symantec said Shylock is targeting more than 60 banks and financial institutions mostly in the United Kingdom but also in the United States and Italy. From its inception in July 2011 until around May of 2012, Shylock was only targeting institutions in the UK, so this global expansion is part of the Trojan’s new look.
The malware’s creators are also refining the target list to root out less valuable banks that have either become harder to compromise or no longer provide services for high-value clients.
Shylock’s list of potential features includes an archiver that allows it to compress and upload recorded video files to remote servers, a BackSocks mechanism that allows Shylock to use infected machines as proxy servers, a diskspread functionality that lets Shylock spread via removable drives, an ftpgrabber module that supports password theft from various applications, an MsgSpread which gives Shylock the ability to proliferate through Skype instant messages, and a VNC that provides attackers with a remote connection to compromised devices.
Shylock’s creators aren’t just refining their target list and adding features to expand its capabilities and reach; they’re also fortifying its infrastructure to avoid downtime.
Shylock possessed the ability to move itself over Skype messages since January. Before that, its most substantial upgrade happened in November of last year, when its creators added a detection-evading function that let them determine whether the virus was executing organically on a computer or if researchers were opening it in a virtual machine to pick it apart.