W32/Netsky.Z

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W32/Netsky.Z Worm

Information about the W32/Netsky.Z Worm:

W32/Netsky.Z is a mass mailing worm. This worm is a variant of W32/Netsky.This worm infects Windows systems and spreads through email.

The infected email carries a spoofed 'From' address, picked up from the infected system.

The subject of the infected email will be any one of the following;

Important
Document
Hi
Information
Hello

The infected email has an attachment with an extension ..zip along with any one of the following names;

Important
Textfile
Data
Part-2
Notice
Informations
Details
Bill

Upon execution of the infected attachment, the worm copies itself as Jammer2nd.exe in the Windows folder. The worm also creates a file PK_ZIP_ALG.LOG and PK_ZIP<random number>.LOG in the Windows folder.

The worm modifies registry at the following location to run itself at the startup;

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run

To propagate itself, the worm scans the files having the following extensions and collects all the available email addresses from the infected system;

.pl, .rtf, .oft, .txt, .uin, .jsp, .tbb, .cgi, .sht, .vbs, .doc, .dbx, .asp, .adb, .php, .htm, .eml, .xml, .wab, .wsh, .msg, .html, .dhtm, .shtm

The worm mails itself to these addresses using its own SMTP engine.

The worm opens port 665 to allow access to the infected system. It also attempts to perform a DOS attack on the following sites, if the system date is between May 2 and May 5;

www.medinfo.ufl.edu
www.nibis.de
www.educa.ch

This worm first appeared on April 21, 2004.

Other names of W32/Netsky.Z Worm:

This worm is also known as WORM_NETSKY.Z, W32/Netsky.Z@MM, Netsky.Z, W32/Netsky-Z.

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Proland Software is the developer of Protector Plus range of anti virus software packages. Protector Plus anti virus is available for Windows XP, Windows Me/98/95, Windows NT/2000/2003 servers and workstations, MS-Exchange 2000/2003, MS-DOS and NetWare servers.

Protector Plus range of anti virus products offer on-line virus detection and removal. All the packages have the ability to detect and isolate all types of viruses, trojans, worms and other types of malware. Protector Plus antivirus software can detect and remove W32/Netsky.Z worm reliably.

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