x
48h OFFER
If you're already a customer of
our homeusers protection,
renew now with a 50% off
RENEW NOW
x
SPECIAL OFFER
If you're already a customer of
our homeusers protection,
renew now with a 50% off
RENEW NOW
x
HALLOWEEN OFFER
take advantage of our
terrific discounts
BUY NOW AND GET A 50% OFF
x
CHRISTMAS OFFER
Buy the best antivirus
at the best price
BUY NOW AND GET A 40% OFF
x
SPECIAL OFFER
Buy the best antivirus
at the best price
BUY NOW AND GET A 50% OFF
x
BLACKFRIDAY OFFER
Buy the best antivirus
at the best price
TODAY ONLY UP TO 70% OFF
x
CYBERMONDAY OFFER
Buy the best antivirus
at the best price
(Only for homeusers)
TODAY ONLY UP TO 70% OFF
Active Scan. Scan your PC free
Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Koobface.JO

Threat LevelLow threatDamageHighDistributionNot widespread
Common name:Koobface.JO
Technical name:W32/Koobface.JO.worm
Threat level:Medium
Alias:Net-Worm.Win32.Koobface.fvo,
Type:Worm
Effects:   It spreads and affects other computers. It monitors the affected user's Internet browsing habits. 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 instant messaging.
Affected platforms:

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

First detected on:March 12, 2010
Detection updated on:March 12, 2010
StatisticsNo

Brief Description 

    

Koobface.JO is a worm that spreads by copying itself, without infecting other files.

 

It captures certain information entered or saved by the user, with the corresponding threat to privacy: user's browsing habits.

 

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

 

Koobface.JO prevents access from programs to websites of several companies related with security tools (antivirus programs, firewalls, etc.).

 

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 deletes the original file from which it was run once it is installed on the computer.

 

Koobface.JO 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.
  • Instant messaging: it sends links pointing to a copy of itself to all users included in the infected user's contacts list.