Conficker is the most harmful virus that enters your computer system as other viruses do. This virus enters through the network and damages millions of computers. It allows the remote computers all the accessing rights of your computer system, and is a grave threat to the security of your system. You can prevent entry of this virus in your system if you know the simple steps on how to prevent conficker.

How to prevent conficker:

Your computer can be prevented from conficker virus like all other viruses. Here are some tips that will help you in this.

• While installing the antivirus and antispyware software in your system, make sure that they are licensed, and buy them only from trusted sources.
• Do not turn off the firewall that is installed in your system any time; while attaching the USB, downloading something from the internet, when you are in network with other systems, etc.
• Look for newer versions of software in the market with greater security features and update your systems regularly.
• While installing flash drives in your system, scan them using antivirus software before opening them in your system.
• You should always turn off “autorun” or “autoplay” feature for the USB devices while installing them in your system.
• Apply device control policy to your system.
• Use secured passwords that are difficult to access i.e. strengthen your passwords.
• Disable the features such as file printing and file sharing in your system.
• Apply MS08-67 patch to your system to protect it from conficker.
• Application of device control policy is a must for all the computer system users in network or peer modules.
• Install firewall in client systems, and also if your systems are connected in a network.
• Use network access control or NAC. This will help you in keeping a track of the patches, antivirus, firewall and any other security updates to be up to date in your system.
• Built-in device controls help in eliminating the risk from USB drives when they are installed in your system.
• Do not download software from any websites that are not trust worthy. They increase the risk of infection of conficker in your system.
• Be very cautious while opening any attachments in emails and while clicking on any advertisements in the internet.
• Do not click on buttons like “agree”, “ok” and “I accept” on the windows that pop-up on any sites. Press “Ctrl + F4” or “Alt +F4” instead of this.

If your system is infected by conficker, then these tips will help you in removing the virus from your system.

Recovering your system from conficker:

• Conficker can be removed by using the Microsoft Windows Malicious Software Removal Tool. This tool is available freely online and you can download it and clear the virus infection from your system.
• This software scans the system for any virus and clears it effectively.
• You can download this software from the Microsoft websites “update.microsoft.com” or “support.microsoft.com/kb/890830”.
• This antivirus software is not real-time software; hence, it cannot protect your system from further infection. You should always follow the precautionary measures that are given above to prevent your system from infection.
• You will also get a tool in Microsoft Desktop Optimization Pack 6.0. This tool is the Stand-alone system sweeper tool, which will also help you in removing the infection of conficker.
• You can get this tool on Microsoft’s official website “microsoft.com/windows/enterprise/technologies/mdop.aspx”.
• Further, you can also prevent the conficker infection to your system by running the Microsoft Forefront client Security on you system. This software blocks the entry of the virus in your system.

After you have fixed the virus in your system it is compulsory that you turn off autoplay in your operating system. This must be done for any operating system and the steps for it are as follows. These steps are somewhat common for all the operating systems.

• Step 1: Click on the “start” button.

• Step 2: Then, click on “run” here.

• Step 3: In “run” type gpedit.msc and then press “enter”

• Step 4: Look for the computer configurations here, and expand the administrative template.

• Step 5: Click on either system or Windows Components depending upon the operating system you are using and then click on “autoplay policies”.

• Step 6: Now, click on “turn off autoplay”

• Step 7: Click on “properties”

• Step 8: Now, under turn off autoplay click on the “enabled radio button”

• Step 9: Select all drivers

• Step 10: Click “ok”

• Step 11: Restart your computer system and finally you are done with the virus fixing.

The precautionary measures and the virus recovery methods to prevent conficker that are given above are helpful and save all your important data from getting corrupted easily.

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Conficker is a computer worm which targets Microsoft window operating system. Conficker is referred as “Downup” and “Kido”, it was first identified in November 2008.Confricker uses errors in “Windows software” to “designate machines” and connect them into a “virtual computer”, which can be controlled remotely by its creator. Conficker is a one of the highest infected computer worm, and multiplies quickly into computer, since the “2003 SQL Slammer”. The worms are generally hard to counter, because of its mutual use of various advanced “Malware techniques”.

The term Conficker has derived from the English word “configure” and the German term “Ficker”, that means “fucker”. The Microsoft analyst “Joshua Phillips” has described the name Conficker as a rearrangement of portions of the domain name “trafficconverter.biz”, which is used by initial versions of Conficker to download updates.

Things required:

• Unpatched PC’s running Windows 2000
• Windows XP
• Windows Server 2003

Instructions:

• If you not sure that your computer is infected or not, then try to reboot. If your computer has Conficker worm, then it won’t let you reboot your computer. If your PC or Network is not infected yet, then you can visit Microsoft update and install them to protect your PC against this vulnerability, install all high priority security patches the scan deems necessary.

• If your system is already damaged, the worm won’t allow you to visit “Microsoft Update”, and any of the key antivirus/antispyware websites. Microsoft suggests trying to contact their “Windows Live OneCare Safety Scanner”. Install some decent PC protection “spy ware” antivirus such as “Malwarebytes” and “Avast”.

• Avast contains antivirus protection. Malicious processes can be protected by the proactive protection within these malwarebytes. Both have a collection of additional features. They have free versions buying a License, which can unlock added features in both antiviruses.

• The University of Bonn website has a complimentary set of 6 “suppression tools”, specially created by Felix Leder and Tillmann Werner; both are members of the “HoneyNet Project”. Upcoming editions of Malware elimination software will adapt a new variants emerge.

• The tools they created are known as ‘Downatool2.’ It is used to create domains for the “Downadup” A, B & C variations.

• Domain Collision tool are accessible, for Conficker C, which is installed in computer by default with the entire Domain names for April 2009. It is used to locate conflicts among Conficker created Domains and real Domains.

• There is a Memory Disinfector “conficker_mem_killer.exe”, which scrutinize the memory of each running process and stop infected tags without damaging the process itself. This prevents essential system services from shutting down. It works in a “Dos window”.

• The “Conficker A” is an alternatively used casual file names and registry keys to inflict havoc. The B & C Variants are not casual they are based on the hostname. “Regnfile.exe” is used to check for Conficker (B & C) infected DLL’s. This works on “Dos window”

• A Network Scanner is also available, which is used to check damaged machines. It uses a “python script”, to differentiate between damaged and non-infected machines, which indicate a response from the “Conficker worm” causing it to give its location away.

• “Nonficker Vaxination” Tool make the Conficker worm to consider the machine have already been damaged with the “latest variant”. It will disregard machines with this especially coded DLL installed as a system service.

• Highly recommended company “Sophos”, also has a particular Conficker removal tool “ssconftool_10_sfx” free for downloading. You need to register an account it will also offers the optional advantage of future warning notifications as they expand. This tool works on” Dos window”.

• If you want to use above mentioned tools, it is suggested that you use the “Task Manager” to turn off any and all unnecessary programs and services. Conficker conceals its actions under the “svchost.exe” and makes them appear like system or local services. Most of these services are compulsory for Windows to operate.

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