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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Encyclopedia GetVirusCard True 0

BW.679

 
Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:BW.679
Technical name:BW.679
Threat level:Low
Alias:
Type:Virus
Effects:   It carries out damaging actions on the affected computer. It does not spread automatically using its own means.
Affected platforms:

MS-DOS

Detection updated on:Nov. 13, 2002
StatisticsNo

Brief Description 

    

BW.679 is a virus that spreads to other computers by copying its code to other files or programs.

 

BW.679 does not spread automatically using its own means. It needs an attacking user's intervention in order to reach the affected computer. The means of transmission used include, among others, floppy disks, CD-ROMs, email messages with attached files, Internet downloads, FTP, IRC channels, peer-to-peer (P2P) file sharing networks, etc.

 

BW.679 uses the following infection strategies:

  • Resident: once it has been run, the virus goes memory resident and stops functions belonging to the operating system. Therefore, every time the operating system or an application tries to access any of these functions, the virus will activate and infect new files.
  • Encrypted: it encrypts its code in order to make it difficult to detect. In order to carry out its infection, the virus decrypts itself and, once infection has been carried out, it encrypts itself again.

Visible Symptoms 

    

The virus appends its code to infected files, so the size these files will increase by 679 bytes (the length of the virus).