ZAFI.B WORM SPREADING IN THE WILD

Virus Name  : W32.Zafi.B@mm

Alias             : I-Worm.Zafi.B, W32/Zafi-B, PE_ZAFI.B.G, Zafi.B, W32.Erkez.B@mm

Virus type    : Internet worm

Threat level : Medium

Virus details :

                     Zafi.B is a mass mailing worm uses e-mail addresses collected from the system to distribute infected mails. The worm also uses P2P network to spread. The infected attachment size will be 12800 bytes and it is compressed with FSG.

                     Zafi arrives as an e-mail attachment with random message subject and message body. The infected mail message body is chosen from English, Italian, Spanish, Russian, etc. The worm checks the domain name and selects the language of the infected mail. If the domain name ends with .it, Zafi.B will send the infected mail in Italian.

The infected mail sample is given below.

                     When the infected e-mail attachment is executed, it copies itself to Windows system folder with random exe file name. It also drops a dll with random file extension. Then it modifies the registry to load automatically on next startup. The registry key modification is given below.

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
_Hazafibb = "%System%\<random file name>" HKEY_LOCAL_MACHINE\Software\Microsoft\_Hazafibb

                     Zafi.B searches C to Z drives and copies itself to folders containing the string "share" or "upload". This string search allows the worm to spread using file sharing networks like KaZaA and imesh. The dropped file names will be winamp 7.0 full_install.exe and Total Commander 7.0 full_install.exe.

                     Zafi.B worm overwrites executable files including antivirus programs in the infected system. Also it will not allow regedit, msconfig and task manager process. This worm performs DoS attack on hungary based security sites. Zafi.B worm appeared on 11th June 2004.

How can I protect my system?

                   Solo has incorporated W32.Zafi.B@mm in its signature file to protect users from this worm attack. Solo antivirus registered users are already protected from this worm. Make sure that you have installed registered version of Solo Antivirus to protect your system from all virus threats.

How to remove this worm?

                   If you are already infected with this worm, you can remove it from your computer using Solo Antivirus software. Solo antivirus can detect and remove W32.Zafi.B@mm aka W32.Erkez.B@mm worm safely. Use the following link to Download 30 day trial version of Solo antivirus to remove viruses from your computer.

                   Solo anti-virus not only scans for all viruses, it contains a unique System Integrity Checker to protect you from New Internet Worms, Backdoors and malicious VB, Java Scripts. It also effectively removes all existing Internet Worms, File viruses, malicious VBS, Java scripts, Trojans, Backdoors, boot sector, partition table and macro viruses.

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