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.
Mariquita is not a real trojan virus; it is written in the Visual Basic Script language (VBS).
'Mariquita' launches the NotePad application and creates the text document "marquita.txt"
The 'mariquita.txt' document contains the following text:
Hola soy un virus
Next the virus starts MS Outlook and tries to create new email messages.