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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Kriz.4050

Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Kriz.4050
Technical name:W32/Kriz.4050
Threat level:Low
Type:Virus
Effects:  

It deletes the BIOS, preventing the computer from starting up. It deletes files in all the disk drives available.

Affected platforms:

Windows 2003/XP/2000/NT/ME/98/95

Detection updated on:June 3, 2003
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies
Family:KRIZ

Brief Description 

    

Kriz.4050 is a resident virus that activates when any of the following conditions are met: the date is December 25, the program SoftIce is installed and in use or an infected file is run.

Kriz.4050 is considered extremely dangerous because:

  • It prevents Windows 95/98/NT/ computers from starting up by deleting the content of the CMOS memory.
  • It deletes files in all the disk drives available.
  • When the computer is started up after this virus has activated, a Checksum Error type error appears.

Kriz.4050 does not spread automatically using its own means. It needs the attacking user's intervention in order to reach the affected computer. The means of transmission used include, among others, floppy disks, CD-ROMs, e-mail messages with attached files, Internet downloads, FTP, IRC channels, peer-to-peer (P2P) file sharing networks, etc.

Visible Symptoms 

    

Kriz.4050 is easy to recoginze once it has infected the computer, as it be impossible to start up the computer. As a result, a Cheksum Error is returned.