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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Oscarbot.JD

Threat LevelHigh threatDamageSevereDistributionNot widespread
Common name:Oscarbot.JD
Technical name:W32/Oscarbot.JD.worm
Threat level:Medium
Type:Worm
Effects:   It spreads and affects other computers. It captures certain information entered or saved by the user, with the corresponding threat to privacy. It affects the productivity of the computer, the network to which it’s connected or other remote sites. It carries out actions that decrease the security level of the computer. 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 by exploiting vulnerabilities, across the Internet, via IRC.
Affected platforms:

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

First detected on:July 11, 2006
Detection updated on:July 12, 2006
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies

Brief Description 

    

Oscarbot.JD 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: passwords saved by certain Windows services.

It sends the gathered information to a remote user by any available means: email, FTP, etc.

 

It affects productivity, preventing tasks from being carried out:

  • In the affected computer: it converts the computer into a platform for taking malicious action surreptitiously: spam sending, launch of Denial of Service attacks, malware distribution, etc.
  • In the local network: it generates a large amount of network activity and consumes bandwidth.

 

It reduces the security level of the computer: it changes the security settings of Internet Explorer, decreasing its security level; it awaits remote-control orders received through IRC; it changes system permissions, decreasing the security level.

 

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

  • It deletes the original file from which it was run once it is installed on the computer.
  • It modifies system permissions in order to hide itself.

 

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.
  • It terminates its own execution if it detects that a debugging program is active.

 

Oscarbot.JD 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.

 

Visible Symptoms

 

Oscarbot.JD is easy to recognize, as it shows the following symptoms:

  • It displays false error messages when it is run.