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Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.


Threat LevelLow threatDamageHighDistributionNot widespread
Common name:P2PWorm.JM
Technical name:W32/P2PWorm.JM
Threat level:Medium
Effects:   It carries out damaging actions on the affected computer. It generates a large amount of network traffic activity with the consequent consumption of bandwidth. It uses stealth techniques to avoid being detected by the user. It spreads , across the Internet, through P2P programs.
Affected platforms:

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

First detected on:April 21, 2010
Detection updated on:April 28, 2010
Proactive protection:
Yes, using TruPrevent Technologies

Brief Description 


P2PWorm.JM is a virus that spreads to other computers by copying its code to other files or programs.


  • In the local network: it generates a large amount of network activity and consumes bandwidth.


It uses stealth techniques to avoid being detected by the user:

  • It uses techniques included in its code to hide itself while it is active.
  • It injects itself in running processes.


P2PWorm.JM 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.
  • Peer-to-peer (P2P) file sharing programs: it makes copies of itself with enticing names in shared folders belonging to these programs. Other users of this type of networks then voluntarily download and run the infected files.


P2PWorm.JM 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.