BlackPOS

Overview
BlackPOS is malware that

"infects computers running Windows that are part of POS systems and have card readers attached to them. Once installed on a POS system, the malware identifies the running process associated with the credit card reader and steals payment card Track 1 and Track 2 data from its memory. BlackPOS does not have an offline data extraction method; rather, the captured information is uploaded to a remote server via FTP."