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.

Oscarbot.XI

Threat LevelHigh threatDamageSevereDistributionNot widespread
Common name:Oscarbot.XI
Technical name:W32/Oscarbot.XI.worm
Threat level:Medium
Type:Backdoor
Effects:   It allows to gain remote access to the affected computer. It awaits remote-control orders to carry out. It uses stealth techniques to avoid being detected by the user. It uses anti-monitoring techniques in order to prevent it being detected by antivirus companies. It spreads , via IRC.
Affected platforms:

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

First detected on:June 23, 2009
Detection updated on:June 23, 2009
StatisticsNo

Brief Description 

    

Oscarbot.XI is a backdoor that allows hackers to gain remote access to the affected computer in order to carry out actions that compromise user confidentiality and impede the tasks performed on the computer.

 

It reduces the security level of the computer: it awaits remote-control orders received through IRC.

 

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

  • It injects itself in running processes.
  • It deletes the original file from which it was run once it is installed on the computer.

 

It uses several methods in order to avoid detection by antivirus companies:

  • It terminates its own execution if it detects that it is being executed in a virtual machine environment, such as VMWare or VirtualPC.

 

Oscarbot.XI 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.
  • IRC: It sends a copy of itself to all users connected to the channel to which the infected user is connected.