Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.


Threat LevelHigh threat
DistributionNot widespread
Common name:Brontok.A
Technical name:W32/Brontok.A.worm
Threat level:Medium
Effects:   It spreads and affects other computers.
Affected platforms:

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

First detected on:Oct. 10, 2005
Detection updated on:Aug. 25, 2009
Proactive protection:
Yes, using TruPrevent Technologies

Brief Description 


Brontok.A is a worm that spreads by copying itself, without infecting other files.


Brontok.A 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.
  • Email: sending emails that include a copy of itself as an attachment. The computer is infected when the attachment is run.