Valcard

Threat description

Details

CATEGORYMalware
TYPEWorm

Summary

Valcard is a mass-mailing worm. It is written in Visual Basic and is packed with UPX file compressor. The worm disguises itself as Macromedia Flash player, it is supposed to play a sound file and show a cute image (this functionality sometimes fails due to a bug in worm's code).



Removal

Automatic action

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.

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You may also refer to the Knowledge Base on the F-Secure Community site for more information.

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Technical Details

The worm spreads itself in e-mail with different subjects and bodies and an attachment named 'ValentineCard.exe'. The worm collects e-mail addresses from Outlook Address Book and sends itself to all these addresses.

Valcard worm installs itself to system as 'ValentineCard.exe' and modifies Windows Registry to be run in all Windows sessions. On Thursdays the worm is supposed to extract and show a strange JPG image, but this fails due to a bug as the worm extracts sound file data into a picture file.

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