What is Win32.Zafi.B?
Win32.Zafi.B is a threat that spreads via e-mail, infected video codec’s and P2P networks. It usually appears with Perfect Defender 2009, which is a rogue anti-spyware program that shows up fake system security alerts to lure users into purchasing its full version.

Win32.Zafi.B has the ability to disable the antivirus and other security programs on the infected machines. At the meanwhile, Win32.Zafi.B may also cause RegEdit, MSconfig and the Task Manager to stop working normally.

Do you have Win32.Zafi.B?
If you have enough time and expertise, you can search your computer for Win32.Zafi.B manually. However, it might take hours to find out all files of Win32.Zafi.B, and it is possible that Win32.Zafi.B will appear after rebooting, for its hidden files may still be there.

Download automatic scanner for Win32.Zafi.B
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Manual Win32.Zafi.B removal instructions
WARNING: The manually removal method is for advanced users. Win32.Zafi.B manually removal can be difficult and time-consuming. There is no guarantee that Win32.Zafi.B can be completely removed, for there are hundreds of files generated when Win32.Zafi.B installed on your system. Make sure to back up your computer in case that you make any mistakes and your system does not work.

Follow the instruction below for Win32.Zafi.B removal manually:

Navigate and stop Win32.Zafi.B processes:
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Navigate and Remove Win32.Zafi.B registry values:
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Navigate and Delete Win32.Zafi.B files:
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What are the symptoms of Win32.Zafi.B?

  • Win32.Zafi.B may spread via Trojans
  • Win32.Zafi.B may pop up fake security messages
  • Win32.Zafi.B may install spyware to your computer
  • Win32.Zafi.B may repair its files, spread or update by itself
  • Win32.Zafi.B may violate your privacy and compromises your security

How do I keep away from Win32.Zafi.B?
Once you have cleaned up Win32.Zafi.B, the most important point to prevent Win32.Zafi.B and future malicious programs from reverting is to stay suspicious of spam E-mail attachment and unknown websites. Here are several ways in which you can help protect your computer against Win32.Zafi.B and other malware:

  • Use a computer firewall
  • Confirm that you have downloaded all the latest critical security updates
  • Adjust Internet Explorer web browser’s security settings
  • Download and install anti-spyware protection, such as, Spyware Cease
  • Surf sites and download programs from the web sites you trust

What is Worm?
Win32.Zafi.B is a type of Worm.

In a computer, a worm is a self-replicating computer program that does not alter files but resides in active memory. The difference between a computer worm and a computer virus is that a computer virus can not run itself. A virus usually needs a virus program to run, and the virus code also runs as part of the host program. However, a worm does not need a host program to run; it uses a network to spread itself over computers on the network.

The original computer worm was released (maybe accidentally) on the Internet by Robert Tappan Morris in 1988. The Internet Worm used sendmail, fingerd, and rsh/rexec to spread itself across the Internet.

The SQL Slammer Worm of 2003 used vulnerability in Microsoft SQL Server 2000 to spread itself across the Internet. The Blaster Worm, also of 2003, used vulnerability in Microsoft DCOM RPC to spread itself.

The Melissa worm of 1999, the Sobig worms of 2003 and the Mydoom worm of 2004, all spread through e-mail. These worms shared some features of a Trojan horse, in that they spread by enticing a user to open an infected e-mail attachment.

Mydoom also attempted to spread itself through the peer-to-peer file sharing application KaZaA. The Mydoom worms attempted a Denial of Service (DoS) attack against SCO and Microsoft.