How to Remove Win32/Sirefef.FY Virus

It is really unfortunate that your IE is taken over by Win32/Sirefef.FY. Do you want to remove it from your PC? Don't worry, this post will provide you with some removal tips to help you.

Win32/Sirefef.FY Virus Information

As with Backdoor.Krademok, Win32/Sirefef.FY virus is a high level harmful Trojan horse infection, which is produced to invade vulnerable computer to do malicious things and push your PC into the cliff. Usually, careless users are likely to get infected by this virus when they browse some suspicious websites. When it gets the chance to root in your system, it will get itself spread quickly and consume lots of system resources, which may lead to computer malfunction or make your PC run slower than before. Moreover, this virus is able to inject its harmful codes into your system files, so that it can disable some important programs, such as your firewall, antivirus and so on. 

In this way, your PC will become unprotected and other threats will take this good opportunity to infect your machine. Under the control of those infections, your machine will be damaged completely and turn to be more and more vulnerable. At the same time, the hackers will use the vulnerabilities on your system to steal your important data, such as passwords, credit card number, cell phone number and so forth. To sum up, Win32/Sirefef.FY is definitely a threat to your workstation, which you should eliminate without hesitation.

Win32/Sirefef.FY Virus Detailed Manual Removal Guide

You should remove Win32/Sirefef.FY virus from your computer as it is a potential risk. The manual removal method will guide you step by step to remove Win32/Sirefef.FY virus.

Step 1: Press Ctrl+Alt+Delete at the same time to open Task Manager. Disable the process of Win32/Sirefef.FY virus.

Step 2: Uninstall Win32/Sirefef.FY virus and suspicious programs from your computer. Open Start Menu and go to Control Panel.

Step 3: Open Start Menu and then go to Control Panel. Then use the search bar to look for Folder Option. Check Show hidden files and folders and uncheck Hide protected operating system files (Recommended) in the View tab of Folder Option window.

%Windows%\system32\[Trojan:Win32/Sirefef.FY].exe
%AppData%\Protector-.exe
%Documents and Settings%\[UserName]\Application Data\[random]
%AllUsersProfile%\Application Data\.dll
%AllUsersProfile%\Application Data\.exe

Step 4: Click Start button and search for “regedit” to open Registry Editor. Remove Win32/Sirefef.FY virus registry entries.

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run""="%AppData%\.exe"

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run""="%AppData%\.exe"

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Associations "LowRiskFileTypes"=".zip;.rar;.nfo;.txt;.exe;.bat;.com;.cmd;.reg;.msi;.htm;.html;.gif;.bmp;.jpg;.avi;.mpg;.mpeg;.mov;.mp3;.m3u;.wav;"

Step 5: Reboot your computer