I have never got virus infection but today, McAfee kept telling me there was a Trojan:win32/sirefef!cfg virus in disk C. I clicked remove, but after I rebooted my computer, McAfee still told me that the virus was still there no matter how many times I restarted my PC. Is there any better way to remove this awful thing?

Basic Information about Trojan:win32/sirefef!cfg

Trojan:win32/sirefef!cfg is a very secret trojan virus which will be placed into your operating system files such as System32 files. It’s very easy to be detected by your anti-spyware that installed in your computer. However, it’s very hard to be removed from your computer. Just like the victim described, you might click remove or delete many times. But the virus will still be there in your computer. As if this virus can escape from scanning. Right, this Trojan virus is very smart which is created by some criminals with an ulterior motive. The final purpose is to destroy your computer system.

When Trojan:win32/sirefef!cfg hides in the system files, it will keep changing its name randomly so that your anti-virus can’t remove it. Or it will camouflage as the system file. In this way, the anti-virus won’t easily remove it. As for this Trojan horse virus, the ultimate aim is to bring lots of malicious and deceitful advertisements or rogue software or viral documents to damage your computers or swindle and ransom your money. After your PCs get infected by such Trojan, it will firstly change the registry entry to make sure it can start automatically when windows start. The further means of its activity is to get away from the Fire Wall or antivirus programs killing it.

The most awful and destructive action of Trojan:win32/sirefef!cfg is that it will start background downloading when it has its full swing without your notice and permission. The key point is that those downloaded files are all vicious programs, robber software and with useless even harmful information which can lead to your individual privacy revealed to evildoers that means you will suffer property loss and spiritual damages. For you and your computer’s sake, please remove it whenever you get infected buy such Trojan no matter in which way as soon as you can. But remember, antivirus may detect it but can never remove it completely.

To have a better and easy way to fix your computer, you’d better contact an expert for help

Step-by-step Trojan:win32/sirefefcfg Virus Manual Removal Guide

In case that any mistake might occur and cause unpredictable damages during Trojan.PWS.Fareit.D irus removal, please spend some time on making a backup beforehand. Then follow these steps given as below:

1. Restart the infected computer and keep pressing F8 key before Windows launches; then use arrow keys to select and log in with Safe Mode with Networking;
2. Open Control Panel from Start menu and search for Folder Options;
3. Under View tab to tick Show hidden files and folders and non-tick Hide protected operating system files (Recommended) and then click OK;

4. Press Windows+R keys and then type regedit in Run box to open Registry Editor.

5. Delete all the following or those related to the following files.
%Documents and Settings%\[UserName]\Application Data\[random]
%AllUsersProfile%\Application Data\.dll
%AllUsersProfile%\Application Data\.exe(random)

6. Delete all the following or those related to the following registry entries of Trojan:win32/sirefef!cfg.
HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run Regedit32
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System “DisableRegedit” = 0
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run “Inspector”
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Settings “net”
HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\{ Random }

7. Restart the computer to normal mode when you have successfully removed Trojan:win32/sirefef!cfg virus.

Similar Video on How to Modify or Change Windows Registry

Further more, please be careful when you try to fix Trojan:win32/sirefef!cfg virus problem yourself. It’s not so easy for one person who is not familiar with the virus and not well trained in IT filed. The virus can change its name constantly which will make the removal work harder to you. If you don’t have much knowledge of Windows operating system, you almost can’t find it out from so large amounts of system files. And you’d better don’t try so called free software to get rid of this Trojan since the virus is well disguised that anti-virus may delete some system files erroneously. What’s more so called free software may be another cheater. You’d better to find an expert to help you remove this Trojan:win32/sirefef!cfg.

Anyhow, a professional expert such as YooCare/YooSecurity PC Online Service can easily solve your problem and make you at ease.

Published by Tony Shepherd & last updated on May 28, 2013 3:00 am

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