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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Gaobot.PX

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

It uses the LSASS, RPC DCOM and WebDAV vulnerabilities in order to spread to as many computers as possible. It connects to an IRC server and waits for control commands. It allows to obtain information on the affected computer, run files, etc.

Affected platforms:

Windows 2003/XP/2000/NT

Detection updated on:April 28, 2004
StatisticsNo

Brief Description 

    

Gaobot.PX is a worm with backdoor characteristics that affects Windows 2003/XP/2000/NT computers only. Gaobot.PX exploits the LSASS, RPC DCOM and WebDAV vulnerabilities to spread to as many computers as possible.

Gaobot.PX also spreads by attempting to copy itself to network shared resources it accesses. In addition, it takes advantage of the backdoors opened by the worms Bagle.A and Mydoom.A, in order to spread to those computers affected by these worms.

Once it is run, Gaobot.PX connects to a specified IRC server and waits for control commands. As a backdoor, it allows to obtain information on the affected computer, run and download files, launch distributed denial of service (DDoS) attacks, upload files by FTP, etc.

Gaobot.PX ends processes belonging to antivirus programs, firewalls and system monitoring tools. This leaves the affected computer vulnerable to the attack of other viruses or worms. It also ends the processes of Nachi.A, Autorooter.A, Sobig.F and several variants of Blaster.

If you have a Windows 2003/XP/2000/NT computer, it is highly recommendable to download the security patches for the LSASS, RPC DCOM and WebDAV vulnerabilities from the Microsoft website.

Visible Symptoms 

    

Gaobot.PX is difficult to recognize, as it does not show any messages or warnings that indicate it has reached the computer.