Trojans are malicious applications that pose themselves as legitimate software in order to trick users to install them. Once on the victim's machine, it may run any number of malicious process to steal vital information or inflict damage to other software.
This is a generic description for variants of banking password stealing trojans.
PWS-gen-Banco is a password stealing trojan that collects username and password bank account information and attempts to send this information to a remote location.
It is possible to send the information by SMTP, FTP, HTTP,open backdoor, and other methods.