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Delete System Defender | System Defender Removal guide

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Delete System Defender

System Defender Removal Software Download

What is System Defender?

System Defender is a rogue anti-spyware product designed to create a generic state of panic at end user level in order to obtain the perfect conditions under which a can be made.

What Does System Defender do?

Once installed, System Defender will display various false security notifications and warnings detailing exaggerated infections and local PC security vulnerabilities. According to the application’s graphical user interface and displayed messages, the only way to fix such problems is to purchase the licensed version of System Defender. However, nothing can be further then the truth due the fact that the licensed version of System Defender does not exist.

How did I get infected with System Defender ?

Infection normally occurs in one of two ways. The first is from the user downloading a fake video codec. This is a very common way of tricking users into installing the fake security client. Another way if for the hackers to build or hack into a website. Once there they setup what is known as a drive by download. When a user visits the site it will then attempt to push software onto the visitors computer. If proper security is not in place or a new exploit just came out then the users computer can become infected. If you find yourself infected with this then you will need to run a full and in-depth scan to ensure you have no other viruses installed on your computer. This will help to ensure you do not get infected again with System Defender. We do recommend Spyware doctor with Antivirus. You can download the free trial here.

How to Remove System Defender ?

In order to delete System Defender, it is required to use a combination of manual procedures in order to obtain the best results. Regardless of the numerous different variants that System Defender has in the wild, certain standard procedures can cover most cases. When deciding to delete System Defender, the first thing that it required is to close all other non-essential applications, in order to protect their processes and any further loss of data. After this is done, the main executable System Defender process should be eliminated.

Here are the steps we used to remove System Defender from a test computer. Please note that traces will change and mutate. Most of the time it will be similar in nature so the average computer user should be able to figure out what changed. If you are in doubt then just run a full scan with Spyware Doctor with Antivirus to see the latest traces of this.

Kill System Defender processes

  • WS339.exe
  • ppal.exe
  • tjd.exe

We do recommend you run a full scan using Spyware Doctor with Antivirus download. Even if you do not intend on purchasing the product it will help to stop the virus from re-installing and re-activating while you manually remove the rest of the traces. Also it will inform you of any new changes to the file names. You may need this if it mutates. Not all the above process may be running.

Additionally, using a genuine registry cleaner application, invalid references as well as missing paths will be removed from the Windows Registry, insuring proper removal of System Defender rogue antispyware.

Delete System Defender registry values:

  • HKEY_CLASSES_ROOT\CLSID\{3F2BBC05-40DF-11D2-9455-00104BC936FF}
  • HKEY_CLASSES_ROOT\xp_7a9be.DocHostUIHandler
  • HKEY_CURRENT_USER\Software\Classes\Software\Microsoft\Internet Explorer\SearchScopes "URL" = "{searchTerms}"
  • HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Download "RunInvalidSignatures" = "1"
  • HKEY_CLASSES_ROOT\Software\Microsoft\Internet Explorer\SearchScopes "URL" = "{searchTerms}"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "System Defender"

Delete System Defender files: ( Hint ) Most of these files will be in the %UserProfile%\Application Data\System Defender \ directory. Not all will be there and some may not be present in your virus version

  • WS339.exe
  • WSD.ico
  • wsd.cfg
  • System Defender.lnk
  • cookies.sqlite
  • Instructions.ini
  • 68.mof
  • mozcrt19.dll
  • sqlite3.dll
  • ANTIGEN.dll
  • ANTIGEN.sys
  • ANTIGEN.tmp
  • cid.dll
  • CLSV.dll
  • ddv.tmp
  • PE.dll
  • PE.drv
  • PE.sys
  • ppal.exe
  • runddlkey.drv
  • std.sys
  • tempdoc.dll
  • tjd.exe
  • tjd.sys
  • C:\\Program Files\\Mozilla Firefox\\searchplugins\\search.xml

Delete System Defender directories: ( Please note that in most cases everything in this folder can be deleted. Just be sure it’s the correct folder )

  • c:\Documents and Settings\All Users\Application Data\[RANDOM DIRECTORY NAME]
  • c:\Documents and Settings\All Users\Application Data\117fc
  • %UserProfile%\Application Data\System Defender
  • %UserProfile%\Desktop\[RANDOM DIRECTORY NAME]\
  • %UserProfile%\Desktop\xp_7a9be\

Another option is to use a very good online service called . This site is dedicated to delete System Defender (and similar threats) and those experts will do it for around 89 dollars. Consider it is a very small cost compared to an on-site technician. Besides, you will save lots of time. This is probably the best option to delete System Defender.


 Delete System Defender | System Defender Removal | How to Delete System Defender | Remove System Defender | System Defender