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Malware Defense. How to remove? (Uninstall guide)

removal by Jake Doevan - -   Also known as MalwareDefense | Type: Rogue Antispyware

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.

Malware Defense graphical user interface
[Figure 1. Malware Defense graphical user interface]

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]

Other fake security alerts will state that your computer is not protected and that Internet Explorer, Windows Messenger or other programs are infected. While browsing the web you will likely see fake warnings claiming that particular websites are dangerous and may harm your PC.

Malware Defense is not legitimate security software. It’s a well-thought-out scam. If you fins that your computer is already infected, please use the manual removal guide stated below or download an automatic removal tool to remove Malware Defense from the system as soon as possible. Remember, do not purchase it. If you have already purchased this misleading program, contact your credit card company and dispute the charges.

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Compatible with Microsoft Windows Compatible with OS X
What to do if failed?
If you failed to remove infection using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to uninstall Malware Defense. Free scanner allows you to check whether your PC is infected or not. If you need to remove malware, you have to purchase the licensed version of Reimage malware removal tool.

Note: Manual assistance required means that one or all of removers were unable to remove parasite without some manual intervention, please read manual removal instructions below.

More information about this program can be found in Reimage review.
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Malware Defense manual removal:

Kill processes:
mdefense.exe

uninstall.exe

Delete registry values:
HKEY_CLASSES_ROOT*shellexContextMenuHandlersSimpleShlExt

HKEY_CLASSES_ROOTCLSID{5E2121EE-0300-11D4-8D3B-444553540000}

HKEY_CLASSES_ROOTFoldershellexContextMenuHandlersSimpleShlExt

HKEY_LOCAL_MACHINESOFTWAREMalware Defense

HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionRun "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 FilesMalware Defense

%UserProfile%Start MenuProgramsMalware Defense

About the author

Jake Doevan
Jake Doevan - Computer technology expert

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