How to Remove Security Defender Virus

Security Defender virus is a variant of rogue security program similar to PC Defender Virus. This program is designed to scare people with numerous false security alerts, and the only purpose of this activity is selling a fake licenses to this completely useless and malicious program. Purchasing a license to Security Defender is a total money waste since the program is malicious and only compromises security and user’s privacy. You need to get rid of Security Defender virus as soon as possible since malicious programs present a risk of using your computer by cyber criminals for illegal activities. Thus, you can become a victim of a scam that will disclose your credit card account information or get in trouble with law enforcement agency for spreading viruses. This guide will help you to remove Security Defender virus manually or with a help of removal tool that help to make it safe and easy.

 

 

What is Security Defender virus?

Security Defender virus is a rogue antivirus malware. This program resembles normal security program, but lacks any useful functionality. The only function of this program is making false security alert on random basis and with a high frequency designed to scare users of an infected computer. Another function is to offer them purchasing a license to Security Defender in exchange for fixing all the fake security problems found. In reality, there are no real security problems that need to be fixed, and if there is one, Security Defender virus cannot fix it.

 

Security Defender Virus

 

Security Defender virus infects computers with a help of Trojans coming from infected websites. This malicious program might also be installed with free programs distributed from websites that do not care about security. Security Defender might also be offered as a security program for a free scan. After this program is installed, it starts to generate false alerts and annoys user trying to sell a license to this rogue program.

 

Security Defender virus Removal Tool

Removing Security Defender virus requires some experience of working with system tools, and it is not that safe as professional automated removal since errors in system registry might cause serious problems.
Security Defender Virus Removal Tool will help you to remove this infection and fight spyware and other malicious programs installed onto your PC along with Security Defender. It comes with anti-spyware program, free one-year license, free technical support and money back guaranty.

 

DownloadDownload Removal Tool


HOW TO INSTALL REMOVAL TOOL ON INFECTED COMPUTER:
If your computer is locked by malicious program, you need to tap F8 and start your computer in a Safe Mode with Networking. Then you can download and start removal tool. If malicious program is blocking safe mode, then download the removal tool on some different computer, copy it to USB device, and install it on infected computer started in a Safe Mode with Networking. Then start the installed removal tool and let it update virus signature database and scan your system to detect and remove malicious programs.

 

How to manually remove Security Defender virus

For Security Defender virus manual removal you need a lot of spare time, patience, and attention since errors made during manual removal are dangerous to your system. It is preferable to have at least some previous experience in working with Windows system registry that requires special and accurate treatment. There is no UNDO button in Registry Editor, and there is no way to fix errors unless you make backup files for any changes that you plan to make to your system registry database. Otherwise, your system might require either an expensive repair or reinstalling operating system with a possible loss of valuable data.

Since Security Defender virus uses system registry extensively for its own protection against removal, it blocks an access to this utility. You need to reboot your system in a Safe Mode with Command Prompt to access your system registry. After you reboot your system in a safe mode, type regedit.exe at command prompt and look for registry keys that should be removed or changed. Some most important keys are listed below; however, there are a lot more of them, and you need to clean you registry with a help of a good registry cleaner after you remove Security Defender virus.

 

Kill Security Defender virus malicious processes

[random].exe

How to Stop Malicious Process with your Task Manager

 

Remove Security Defender virus entries from system registry:

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\FIREFOX.EXE\shell\open\command “(Default)” = ‘”%UserProfile%\Local Settings\Application Data\[random].exe” /START “%Program Files%\Mozilla Firefox\firefox.exe”‘
HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\FIREFOX.EXE\shell\safemode\command “(Default)” = ‘”%UserProfile%\Local Settings\Application Data\[random].exe” /START “%Program Files%\Mozilla Firefox\firefox.exe” -safe-mode’
HKEY_LOCAL_MACHINE\SOFTWARE\Clients\StartMenuInternet\IEXPLORE.EXE\shell\open\command “(Default)” = ‘”%UserProfile%\Local Settings\Application Data\[random].exe” /START “%Program Files%\Internet Explorer\iexplore.exe”‘
HKEY_CURRENT_USER\Software\Classes\.exe “(Default)” = ‘exefile’
HKEY_CURRENT_USER\Software\Classes\.exe “Content Type” = ‘application/x-msdownload’
HKEY_CURRENT_USER\Software\Classes\.exe\DefaultIcon “(Default)” = ‘%1%’ = ‘”%UserProfile%\Local Settings\Application Data\[random].exe” /START “%1″ %*’
HKEY_CURRENT_USER\Software\Classes\.exe\shell\open\command “IsolatedCommand” = ‘”%1″ %”’
HKEY_CURRENT_USER\Software\Classes\.exe\shell\runas\command “(Default)” = ‘”%1″ %”’
HKEY_CURRENT_USER\Software\Classes\.exe\shell\runas\command “IsolatedCommand” = ‘”%1″ %”’
HKEY_CURRENT_USER\Software\Classes\exefile “(Default)” = ‘Application’
HKEY_CURRENT_USER\Software\Classes\exefile “Content Type” = ‘application/x-msdownload’
HKEY_CURRENT_USER\Software\Classes\exefile\DefaultIcon “(Default)” = “%1%”
HKEY_CURRENT_USER\Software\Classes\exefile\shell\open\command “(Default)” = ‘”%UserProfile%\Local Settings\Application Data\[random].exe” /START “%1″ %*’
HKEY_CURRENT_USER\Software\Classes\exefile\shell\open\command “IsolatedCommand” = ‘”%1″ %”’
HKEY_CURRENT_USER\Software\Classes\exefile\shell\runas\command “(Default)” = ‘”%1″ %”’
HKEY_CURRENT_USER\Software\Classes\exefile\shell\runas\command “IsolatedCommand” – ‘”%1″ %”’
HKEY_CLASSES_ROOT\.exe\shell\open\command “(Default)” = ‘”%UserProfile%\Local Settings\Application Data\[random].exe” /START “%1″ %”’
HKEY_CLASSES_ROOT\exefile\shell\open\command “(Default)” = ‘”%UserProfile%\Local Settings\Application Data\[random].exe” /START “%1″%”’

How to Edit Windows Registry

 

Delete Security Defender virus file and folders:

%COMMONAPPDATA%\pcdfdata\defs.bin
%COMMONAPPDATA %\pcdfdata\support.ico
%COMMONAPPDATA %\pcdfdata\config.bin
%COMMONAPPDATA %\Security Defender\Security Defender.lnk
%COMMONAPPDATA %\pcdfdata\app.ico
%COMMONAPPDATA %\pcdfdata\vl.bin
%COMMONAPPDATA %\pcdfdata\uninst.ico%COMMONDESKTOPDIR%\Security Defender.lnk
%COMMONPROGRAMS%\Security Defender\Remove Security Defender.lnk
%COMMONPROGRAMS%\Security Defender\Security Defender Help and Support.lnk
%AppData%\Roaming\Microsoft\Windows\Templates\[random]
%AppData%\Local\[random 3 chars].exe
%AppData%\Local\[random]
%AllUsersProfile%\[random]
%Temp%\[random]

How to Show Hidden Files

 

Note: If manual removal is too complicated for you, then it is better to use removal tool to for removing Security Defender virus without risk to screw up your system. After this malicious program is removed, scan your system with advanced anti-spyware scanner that is a free addition to Security Defender Virus Removal Tool.

DownloadDownload Removal Tool


HOW TO INSTALL REMOVAL TOOL ON INFECTED COMPUTER:
If your computer is locked by malicious program, you need to tap F8 and start your computer in a Safe Mode with Networking. Then you can download and start removal tool. If malicious program is blocking safe mode, then download the removal tool on some different computer, copy it to USB device, and install it on infected computer started in a Safe Mode with Networking. Then start the installed removal tool and let it update virus signature database and scan your system to detect and remove malicious programs.

 

Remove the Infection Completely

Security Defender virus might come with other malicious programs. More viruses might infect your system while Security Defender virus obscures the work of your antivirus software. Some of these malicious programs might help cyber criminals to control your computer, and it might be used for illegal activity on the internet or stealing your private data. If your computer is got infected with Security Defender virus, then you need to take some steps and make sure that your system is secure. Update your antivirus program after you remove Security Defender virus and run a full system scan. If no suspicious files are found by your antivirus, try to scan your system with free antivirus scanners from trusted manufacturers. This use of different overlapping virus databases for malicious program detection will help you to be confident about your system security.

Find more about computer system protection against malicious programs.

 

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