Carnival is a mass-mailer (worm) written in Visual Basic Script.
Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.
More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.
Carnival.A arrives in a message that looks as follow:
Subject: Next Week: Brazilian Carnival Body: That's Great... Attachment: Brazilian_Carnival.JPG.vbs
The worm activates when a user click on the attached file. It spreads to all recipients written in Outlook address book.
On the top of its code this virus contains the following text:
followed by many commended lines.