Point of Sale (POS) system has become a new target for the cyber criminals. ChewBacca, a relatively new and private Trojan, used in the 11 countries as a POS malware is behind the electronic theft. The malware steals data from the POS system in two ways: Generic keylogger that captures all the keystrokes. Memory scanner that reads process memory and dumps the credit card details. The botnet has been collecting track 1 and track 2 data of payment card since October 25, according to RSA. The RSA investigation has observed it mostly in the US and also detected in 10 other countries.
Source: https://thehackernews.com/2014/01/tor-enabled-point-of-sale-malware.html