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.
OrkutTron is a password stealing trojan centered around the social networking group, Orkut. Immediately after installing the application, the user is asked to login to their Orkut account. This sensitive information is stored in a file called C:\Windows\System32\MEGATRON.ini.