How do you get rid of a trojan horse virus?

Question

My friend has 3 trojan viruses and the avg doesn't delete them, every time she runs the scan they are there. What can she do to remove them that is free? Her computer is very slow and it isn't let her install anything after she downloads it.

Answer 1

Trojan Removal Procedure.

Removing infections from your computer is never as easy as aquiring them. Malware infections are not meant to be removed so it takes TIME and PATIENCE to get rid of them. If you do not have T & P then you can always do a Reformat.

Malware is a general word for all form of Viruses, Spyware etc. This procedure works for all Malware. Replace the Ewido program with the appropriate program.

You might be unable to access the Internet after removing the Malware so you will need to run LSPfix or Winsockxpfix (as appropriate). Download one and save to desktop, run it later.

LSPfix: all Windows OS except 95.

http://www.cexx.org/lspfix.htm

Winsock XP Fix: Windows XP only.

http://www.spychecker.com/program/winsockxpfix.html



Download and Update Ewido (now called the AVG Antispyware):

http://www.ewido.net/en/download/


-- If you have problems updating see here:

http://www.ewido.net/en/download/updates/

Once the updates are installed do the following:



Let's get cleaning

Part 1

• Temporarily show hidden files.

For Windows XP:

1.
Click Start, and then click Control Panel.

2.
Click Appearance and Themes, and then click Folder Options.

3.
On the View tab, under Hidden files and folders, click "Show hidden files and folders", and clear(uncheck) the "Hide protected operating system files" check box.



For older systems:

1.
Double-click My Computer, click View, and then click Folder Options.

2.
On the View tab, under "Hidden files and folders", click "Show hidden files and folders", and clear (uncheck) the "Hide protected operating system files" check box.


IMPORTANT: Files are hidden by Windows for a very good reason. It is not wise to experiment with these files. Unfortunately, to successfully remove modern spyware we must turn this protection off temporarily. Please turn the protection back on when you have finished cleaning your system.


Empty your Internet Explorer cache and your other temporary file folders:

1.
On the Internet Explorer Tools menu, click Internet Options.

2.
On the General tab, in the Temporary Internet Files section, click the Delete Files button. This will delete all the files that are currently stored in your cache.

3.
Select the Delete all offline content check box in the confirmation dialogue box that appears, click OK.

4.
Click OK again.

Restart in Safe Mode:

To do this you need to hold down or repeatedly tap the F8 key while the computer is booting (when the computer is displaying a black screen with white text). When the boot menu appears, use your keyboard arrows to select "Safe Mode."

Safe Mode can look quite ugly. The color may look bad, and all of your desktop icons will be very large. This is normal.



Start Scan and let Ewido scan the PC


When the scan and removal are completed REBOOT COMPUTER. This will restart you in normal mode.

If you are unable to access the Internet after removing Malware you will need to run LSPfix or Winsockxpfix (as appropriate).


If you are using Windows XP Service Pack 2 (SP2) and are unable to access the Internet after removing Malware, there is a command that may fix the problem, removing the need to run Winsockxpfix. It works by resetting the winsock catalogue. Click on Start, then Run and type CMD in the dialogue box that appears. Click OK. Type "netsh winsock reset" (no quotes)into the DOS window that appears.


The last steps

If you are running Windows XP or Windows ME, and your computer has been successfully cleaned of Malware, there is one more thing that needs to be done.

Delete any old restore points and then create a new restore one. The old ones may, of course, be infected with the Malware and cannot be used.

First, start and then stop the Restore Service. This is done differently depending on what operating system you are running.

Windows XP:

1.
Click Start, and then click Control Panel.

2.
Click Performance and Maintenance, click System, and then click on the System Restore tab.

3.
Select the Turn Off System Restore check box, click Apply, then restart your computer.

4.
Return to the System Restore Tab and turn System Restore back on.


Windows ME:

1.
Click Start, click Control Panel, click System.

2.
Click Performance, click File System, and then click Troubleshooting.

3.
Enable the option Disable System Restore, click Apply then restart your computer.

4.
Return to the Troubleshooting tab and turn System Restore back on.


To set a manual restore point complete the following steps:

1.
Click the Start button.

2.
Point to Programs, then navigate to Accessories, then System Tools, then click System Restore.

3.
Choose Create a restore point, and then click Next.

4.
In the Restore point description box, type a name for your restore point, and then click Next.

5.
Click OK.


If the above program(s) didn't remove the Trojan, it may be a Smitfraud Trojan. These require a specialized program for removal. Here are two sites that specialize in Smitfraud removal.

http://www.internetinspiration.co.uk/roguefix.htm

http://siri.urz.free.fr/Fix/SmitfraudFix_En.php

Answer 2

2

Answer 3

For an effective Trojan virus removal, you need to follow some simple steps. These steps will keep the Trojan virus permanently away from your computer. The steps are as follows:

1.Ensure you have the most robust antivirus system in your computer. By most robust is meant that it must be upgradable, and must be able to deliver stringent results.
2.Every startup must be accompanied with an auto switch on of the antivirus scanning machinery. The scanner must be able to scan all the drives and all the files in your computer. It has been found that data files also have the ability to carry viruses.
3.Do not download anything that you feel is suspicious. As far as possible, subject all downloads to an online scanning to ensure that there are no traces of any virus in them.
4.Exe files must be carefully downloaded from known sources only. If you have reasons to suspect the source, please do not download the file. Remember, prevention is a million zillion times better than finding out the cure.
5.Go to the task manager and try to find out which file is eating away loads of bytes. These will be either unknown.exe files or files with randomly generated numbers as their names.
6.Always use the uninstall option while uninstalling programs from your computer. Uninstall reverses the installation process in almost a copy book fashion so there is no unwanted debris lying strewn around.

AdonaLouis is an expert writer on different Viruses and malware trojan is a Trojan which adversely affects your system. So get rid of trojan. To get more information you can visit on:

http://www.avg.com
http://www.ituneserrorsmart.com

Answer 4

Run AVg in safe mode. Here is directions for safe mode. you may want to print it out.

If the computer is running it is best to shut down Windows and then turn off the power.

Begin by first clicking on the Start Button and then click on Turn Off Computer.

Now click on the Turn Off red colored icon to shut down your computer system.

It is best to wait between 15 to 30 seconds before you turn your system back on.

Turn on your computer and start tapping the F8 key on your keyboard.

Some Computers may display a keyboard error message if you begin tapping F8 too quickly.

Restart your computer again and begin tapping the F8 key a brief second or two later.

When the Windows Advanced Options Menu appears, Choose the Safe Mode option and hit Enter.

Windows will now boot your computer up in Safe Mode.

Here is a list of free scans.I would recommend running ewido first.
Spybots search and Destroy http://www.download.com/3000-8022-10122137.html?tag=pao
adaware se> http://www.download.com/Ad-Aware-SE-Personal-Edition/3000-8022_4-10399602.html?tag=lst-0-1
http://www.webroot.com/land/freescan.php
a-squared Free> http://www.emsisoft.com/en/software/free/
http://housecall.antivirus.com/housecall/start_frame.asp
http://housecall65.trendmicro.com/
X -Cleaner Micro Edition scan http://www.spywareguide.com/onlinescan.php
http://www.kaspersky.com/virusscanner
http://www.windowsecurity.com/trojanscan/
http://www.bitdefender.com/scan8/ie.html
http://www.pandasoftware.com/products/activescan/com/activescan_principal.htm

http://www3.ca.com/securityadvisor/virusinfo/scan.aspx
http://www.javacoolsoftware.com/spywareblaster.html
Spywareguard too.
http://www.javacoolsoftware.com/spywareguard.html
http://www.ewido.net/en/onlinescan/
Get free anti virus for free click here.
http://free.grisoft.com/doc/1
http://avast.com

Answer 5

I don't know of any way to get rid of them for free, but some of the companies that do virus removal are pretty reasonably priced. Do a search and compare prices. I use Stopsign.

Answer 6

Norton, AVG , Avast are widely used and effective
antivirus software. You can download these free
softwares at http://tinyurl.com/yahtjk