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Home › Rogue Anti Spyware › Tutorials - HowTo › Remove BlockDefense (Uninstall instructions)

Remove BlockDefense (Uninstall instructions)

Myantispyware team August 28, 2009     No Comment    

BlockDefense is a new rogue antispyware program from WiniGuard family (SaveDefense, TrustNinja, SaveSoldier …). BlockDefense uses fake security alerts, exaggerated scan results in order to trick you into buying the software. During installation, BlockDefense configures itself to run automatically every time, when you boot your computer. Immediately after launch, BlockDefense will begin to scan your computer and list a large amount of infections, but all of these infections are fake or exaggerated, so you can safely ignore them. It uses false scan results as a method of scaring you into buying the software!

blockdefense_scan
BlockDefense (more screenshoots 1, 2)

If your computer is infected with BlockDefense, then use these removal instructions below in order to remove this infection and any associated malware from your computer for free.

Symptoms in a HijackThis Log

O4 – HKCU\..\Run: [BlockDefense] C:\Program Files\BlockDefense Software\BlockDefense\BlockDefense.exe -min
O23 – Service: BlockDefense Security Service (BlockDefenseSvc) – Unknown owner – C:\Program Files\BlockDefense Software\BlockDefense\BlockDefenseSvc.exe

Use the following instructions to remove BlockDefense (Uninstall instructions)

Download MalwareBytes Anti-malware (MBAM). Close all programs and Windows on your computer.

Double Click mbam-setup.exe to install the application. When the installation begins, keep following the prompts in order to continue with the installation process. Do not make any changes to default settings and when the program has finished installing, make sure a checkmark is placed next to Update Malwarebytes’ Anti-Malware and Launch Malwarebytes’ Anti-Malware, then click Finish.

If an update is found, it will download and install the latest version.

Once the program has loaded you will see window similar to the one below.

malwarebytes-antimalware1
Malwarebytes Anti-Malware Window

Select Perform Quick Scan, then click Scan, it will start scanning your computer for BlockDefense infection. This procedure can take some time, so please be patient.

When the scan is complete, click OK, then Show Results to view the results. You will see a list of infected items similar as shown below. Note: list of infected items may be different than what is shown in the image below.

blockdefense_mbam
Malwarebytes Anti-malware, list of infected items

Make sure that everything is checked, and click Remove Selected for start BlockDefense removal process. When disinfection is completed, a log will open in Notepad and you may be prompted to Restart.

Note: if you need help with the instructions, then post your questions in our Spyware Removal forum.

BlockDefense creates the following files and folders

C:\Documents and Settings\All Users\Start Menu\Programs\BlockDefense
D:\Program Files\BlockDefense Software
D:\Program Files\BlockDefense Software\BlockDefense
C:\Program Files\BlockDefense Software\BlockDefense\BlockDefense.exe
C:\Documents and Settings\All Users\Start Menu\Programs\BlockDefense\1 BlockDefense.lnk
C:\Documents and Settings\All Users\Start Menu\Programs\BlockDefense\2 Homepage.lnk
C:\Documents and Settings\All Users\Start Menu\Programs\BlockDefense\3 Uninstall.lnk
C:\Program Files\BlockDefense Software\BlockDefense\BlockDefenseSvc.exe
C:\Program Files\BlockDefense Software\BlockDefense\license.txt
C:\Program Files\BlockDefense Software\BlockDefense\uninstall.exe
C:\Documents and Settings\All Users\Desktop\BlockDefense.LNK

BlockDefense creates the following registry keys and values

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\blockdefensesvc
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\blockdefensesvc
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\BlockDefense
HKEY_LOCAL_MACHINE\SOFTWARE\BlockDefense
HKEY_CURRENT_USER\SOFTWARE\BlockDefense
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\BlockDefense

Rogue Anti Spyware Tutorials - HowTo

Author: Myantispyware team

Myantispyware is an information security website created in 2004. Our content is written in collaboration with Cyber Security specialists, IT experts, under the direction of Patrik Holder and Valeri Tchmych, founders of Myantispyware.com.

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