Nigerian Scammers have moved beyond 419 style scams to use Trojans to steal information.
According to research by Palo Alto Networks, cyber criminals in Nigeria are using tools more commonly associated with comparatively sophisticated criminal and espionage groups in order to steal business-critical data from enterprises, such as Remote Administration Tools (RATs) and other malware available through underground forums, according to The Register.
The cybercrooks also use a second (crypting) tool named DataScrambler to render the file undetectable by most antivirus engines before distributing the infection file as email attachments.