This is a Visual Basic Script worm that disguises itself as a Valentines Day game.
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
Check for the latest database updates
First check if your F-Secure security program is using the latest updates, then try scanning the file again.
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.
It is written to spread to all addresses found in Outlook's Contacts folder. It sends email messages that look as follows:
Subject:Are you [User's name] my valentine? Body: Hi [User's name] my valentine, remember me? I ain't seen you in ages! Anyway, check-out and play the attached guess-the-number-game to guess who I am. See you soon, bye-bye! Attachment: GuessGame.html or GuessGame.vbe
Where the attachment GuessGame.html is previously saved in Desktop, My Documents or Temporary folder. If this file does not exist, Numgame sends another copy of itself (GuessGame.vbe) previously saved in Windows System folder.
The worm shows several message boxes trying to play a game with the infected user.
Numgame searches in particular folders and tries to delete several files from the infected computer and from all network drives.
It also changes the system date to 04-08-1981.
F-Secure Anti Virus currently detects Numgame by the heuristics.
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