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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Passtealer.B.worm

Threat LevelLow threatDamageHighDistributionNot widespread
Common name:Passtealer.B.worm
Technical name:W32/Passtealer.B.worm
Threat level:Medium
Alias:Virus.Win32.Virut.n,
Type:Worm
Effects:   It spreads and affects other computers. It downloads files from several websites. It spreads , across the Internet, via IRC, via mapped drives, through shared network resources.
Affected platforms:

Windows 2003/XP/2000/NT/ME/98/95/3.X

First detected on:May 12, 2008
Detection updated on:May 12, 2008
StatisticsNo

Brief Description 

    

Passtealer.B.worm is a worm that spreads by copying itself, without infecting other files.

 

Passtealer.B.worm accesses several websites to download files, which it then runs. These can be any type of file, although they are normally malware.

 

Passtealer.B.worm uses the following propagation or distribution methods:

  • Exploiting vulnerabilities with the intervention of the user: exploiting vulnerabilities in file formats or applications. To exploit them successfully it needs the intervention of the user: opening files, viewing malicious web pages, reading emails, etc.
  • Via Internet, exploiting remote vulnerabilities: attacking random IP addresses, in which it tries to insert a copy of itself by exploiting one or more vulnerabilities.
  • IRC: It sends a copy of itself to all users connected to the channel to which the infected user is connected.
  • Computer networks (mapped drives): it creates copies of itself in mapped drives.
  • Computer networks (shared resources): it creates copies of itself in shared network resources to which it has access.