Threat Description

Valcard

Details

Aliases: Valcard, I-Worm.Valcard
Category: Malware
Type: Worm
Platform: W32

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

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More

Detailed instructions for F-Secure security products are available in the documentation found in the Downloads section of our Home - Global site.

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



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.





Description Details: Analysis: Alexey Podrezov; F-Secure Corp,; March 4th, 2002


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