Malware Defense is a fake antivirus program from the same family as AntiMalware virus. Please read the removal instructions carefully and remove this infection from your computer as soon as possible. MalwareDefense is promoted through the use of Trojans, mostly Trojan.FakeAlert. Most of the time, Trojans come from fake online scanners, misleading websites or masquerading as a fake video codec. Please note that Trojans can come bundled with other illegitimate software. Once installed, Malware Defense will generate fake alerts or notifications and report false detections in order to convince you to purchase this bogus anti-virus software. Please don’t purchase it. Otherwise, you will simply lose your money.

When running, Malware Defense will simulate a system scan and display a list of infections that can’t be removed with a trial version of this program. In order to remove found infections you have to buy a full version of it. However, this is nothing more but a scam. Let’s see why. First of all, MalwareDefense reports non-existing or legitimate Windows files as infections. Do not remove those files manually because you can seriously damage your computer. Some of the infections will be shown with the following names: Backdoor.Win32.Agent.ich, Rootkit.Win32.Agent.pp, Trojan.Dropper, Virus.Win32.Gpcode.ak, Email-Worm.Win32.NetSky.q, Net-Worm.Win32.Mytob.t and etc. Usually, Malware Defense detects those infections in main Windows OS directories. Of course, this malicious software detects the same infections on every infected computer.

While running, Malware Defense will also display fake security alerts, notifications and error messages. This is a part of MalwareDefense scam. This virus will block particular software and display fake warning that states:

There is unauthorized antivirus software detected on your computer. It is recommend you to remove it, otherwise it could conflict with Malware Defense. Press ‘OK’ to terminate [Program name]

Malware Defense manual removal:
Kill processes:
mdefense.exe uninstall.exe

Delete registry values:
HKEY_CLASSES_ROOT\*\shellex\ContextMenuHandlers\SimpleShlExt
HKEY_CLASSES_ROOT\CLSID\{5E2121EE-0300-11D4-8D3B-444553540000}
HKEY_CLASSES_ROOT\Folder\shellex\ContextMenuHandlers\SimpleShlExt
HKEY_LOCAL_MACHINE\SOFTWARE\Malware Defense
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run “Malware Defense”

Unregister DLLs:
mdext.dll

Delete files:
mdefense.exe mdext.dll uninstall.exe help.ico md.db Malware Defense Support.lnk Malware Defense.lnk Uninstall Malware Defense.lnk

Delete directories:
C:\Program Files\Malware Defense
%UserProfile%\Start Menu\Programs\Malware Defense

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Tags: defense, malware, virus

This entry was posted on December 26, 2009 at 7:00 am. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

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