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Table of Contents
If you use a computer, read the newspaper, or watch the news, you will know about computer viruses or other malware. These are those malicious programs that once they infect your machine will start causing havoc on your computer. What many people do not know is that there are many different types of infections that are categorized in the general category of Malware.
Malware - Malware is programming or files that are developed for the purpose of doing harm. Thus, malware includes computer viruses, worms, Trojan horses, spyware, hijackers, and certain type of adware.
This article will focus on those malware that are considered viruses, trojans, worms, and viruses, though this information can be used to remove the other types of malware as well. We will not go into specific details about any one particular infection, but rather provide a broad overview of how these infections can be removed. For the most part these instructions should allow you to remove a good deal of infections, but there are some that need special steps to be removed and these won't be covered under this tutorial.
Before we continue it is important to understand the generic malware terms that you will be reading about.
Adware - A program that generates pop-ups on your computer or displays advertisements. It is important to note that not all adware programs are necessarily considered malware. There are many legitimate programs that are given for free that display ads in their programs in order to generate revenue. As long as this information is provided up front then they are generally not considered malware.
Backdoor - A program that allows a remote user to execute commands and tasks on your computer without your permission. These types of programs are typically used to launch attacks on other computers, distribute copyrighted software or media, or hack other computers.
Dialler - A program that typically dials a premium rate number that has per minute charges over and above the typical call charge. These calls are with the intent of gaining access to pornographic material.
Hijackers - A program that attempts to hijack certain Internet functions like redirecting your start page to the hijacker's own start page, redirecting search queries to a undesired search engine, or replace search results from popular search engines with their own information.
Spyware - A program that monitors your activity or information on your computer and sends that information to a remote computer without your knowledge.
Trojan - A program that has been designed to appear innocent but has been intentionally designed to cause some malicious activity or to provide a backdoor to your system.
Virus - A program that when run, has the ability to self-replicate by infecting other programs and files on your computer. These programs can have many effects ranging from wiping your hard drive, displaying a joke in a small box, or doing nothing at all except to replicate itself. These types of infections tend to be localized to your computer and not have the ability to spread to another computer on their own. The word virus has incorrectly become a general term that encompasses trojans, worms, and viruses.
Worm - A program that when run, has the ability to spread to other computers on its own using either mass-mailing techniques to email addresses found on your computer or by using the Internet to infect a remote computer using known security holes.
Just like any program, in order for the program to work, it must be started. Malware programs are no different in this respect and must be started in some fashion in order to do what they were designed to do. For the most part these infections run by creating a configuration entry in the Windows Registry in order to make these programs start when your computer starts.
Unfortunately, though, in the Windows operating system there are many different ways to make a program start which can make it difficult for the average computer user to find manually. Luckily for us, though, there are programs that allow us to cut through this confusion and see the various programs that are automatically starting when windows boots. The program we recommend for this, because its free and detailed, is Autoruns from Sysinternals.
When you run this program it will list all the various programs that start when your computer is booted into Windows. For the most part, the majority of these programs are safe and should be left alone unless you know what you are doing or know you do not need them to run at startup.
At this point, you should download Autoruns and try it out. Just run the Autoruns.exe and look at all the programs that start automatically. Don't uncheck or delete anything at this point. Just examine the information to see an overview of the amount of programs that are starting automatically. When you feel comfortable with what you are seeing, move on to the next section.
Make sure you are using an anti-virus program and that the anti-virus program is updated to use the latest definitions. If you do not currently have an anti-virus installed, you can select one from the following list and use it to scan and clean your computer. The list below includes both free and commercial anti-virus programs, but even the commercial ones typically have a trial period in which you can scan and clean your computer before you have to pay for it.
It is also advised that you install and scan your computer with MalwareBytes' Anti-Malware and Emsisoft Anti-Malware. Both of these are excellent programs and have a good track record at finding newer infections that the more traditional anti-virus programs miss. Guides on how to install and use these programs can be found below.
After performing these instructions if you still are infected, you can use the instructions below to manually remove the infection.
We have finally arrived at the section you came here for. You are most likely reading this tutorial because you are infected with some sort of malware and want to remove it. With this knowledge that you are infected, it is also assumed that you examined the programs running on your computer and found one that does not look right. You did further research by checking that program against our Startup Database or by searching in Google and have learned that it is an infection and you now want to remove it.
If you have identified the particular program that is part of the malware, and you want to remove it, please follow these steps.
In order to protect yourself from this happening again it is important that take proper care and precautions when using your computer. Make sure you have updated antivirus and spyware removal software running, all the latest updates to your operating system, a firewall, and only open attachments or click on pop-ups that you know are safe. These precautions can be a tutorial unto itself, and luckily, we have one created already:
Please read this tutorial and follow the steps listed in order to be safe on the Internet. Other tutorials that are important to read in order to protect your computer are listed below.
Now that you know how to remove a generic malware from your computer, it should help you stay relatively clean from infection. Unfortunately there are a lot of malware that makes it very difficult to remove and these steps will not help you with those particular infections. In situations like that where you need extra help, do not hesitate to ask for help in our computer help forums. We also have a self-help section that contains detailed fixes on some of the more common infections that may be able to help. This self-help section can be found here:
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