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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Janx.A

Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Janx.A
Technical name:W32/Janx.A.worm
Threat level:Low
Type:Worm
Effects:  

It connects to an IRC server and waits for remote control commands.

Affected platforms:

Windows 2003/XP/2000

First detected on:Dec. 13, 2004
Detection updated on:Dec. 14, 2004
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies

Brief Description 

    

Janx.A is a worm that spreads via the Internet by exploiting the LSASS vulnerability in remote computers. This vulnerability is critical for Windows XP/2000 operating systems that are not properly updated.

Janx.A connects to the IRC server 203.167.78.35 and waits for remote control commands to be carried out on the affected computer.

Janx.A only spreads automatically to Windows XP/2000 computers. However, computers with other Windows operating systems can also be a source of transmission when a malicious user runs the file containing the worm in any of these computers.

 

If you have a Windows XP/2000 computer, it is highly recommendable to download the security patch for the LSASS vulnerability from the Microsoft website.

Visible Symptoms 

    

Janx.A is difficult to recognize, as it does not display any messages or warnings that indicate it has reached the computer.

Additional notes:

  • Although Janx.A exploits the LSASS vulnerability, it does not restart the computer, a typical characteristic of those malware exploiting the already mentioned vulnerability, in order not to give evidence of its presence in the affected computer.