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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Encyclopedia GetVirusCard True 0

Nachi.G

 
Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:Nachi.G
Technical name:W32/Nachi.G.worm
Threat level:Low
Type:Worm
Effects:  It exploits the RPC DCOM, WebDAV and Workstation Service vulnerabilities in order to spread. It uninstalls the worms Mydoom.A, Mydoom.B, Doomjuice.A and Doomjuice.B, and deletes the files carrying these worms.

Affected platforms:

Windows XP/2000/NT

Detection updated on:March 10, 2004
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies

Brief Description 

    

Nachi.G is a worm that affects Windows 2003/XP/2000/NT computers only. Nachi.G exploits the vulnerabilities Buffer Overrun in RPC Interface, WebDAV and Workstation Service Buffer Overrun in order to spread to as many computers as possible.

Nachi.G spreads by attacking remote computers and exploits the vulnerabilities mentioned above to download a copy of itself to the compromised computer. In order to do this, Nachi.G incorporates its own web server.

Nachi.G uninstalls the worms Mydoom.A, Mydoom.B, Doomjuice.A and Doomjuice.B by ending their processes and deleting the files carrying the worms.

If you have a Windows 2003/XP/2000/NT computer, it is highly recommendable to download the security patches from the Microsoft website for the following vulnerabilities: Buffer Overrun in RPC Interface, WebDAV and Workstation Service Buffer Overrun.

Visible Symptoms 

    

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