AV-Clean

Last Update: July 13, 2012 webmaster Rogue 0

AV-Clean or AV Clean is in the lists of Korean-made rogue ant-virus program showing up and infecting a number of computers world-wide. With its foreign languages, most users will not be able to detect what this program was all about. AV-Clean will just pop-up on infected computers without users intervention and manual installation. This can penetrate a computer if an infected executable file was downloaded from a peer-to-peer network connection. When inside the computer, alterations will be made to the system to justify its presence as a dominant program. Antivirus installed will be disabled and Windows functions will be rendered useless including registry editor, task manager, control panel and so on. Internet browser will be modified to set the default home page to unwanted web site that promotes another fake anti-virus program.

Removing AV-Clean will not be easy, since we mentioned that most of the required Windows functions were deactivated. Add/Remove programs is also useless because no entry of AV-Clean was made in an attempt to make it stay inside the computer until the full version was obtained by its victim. Only chance to get rid of this malware is by scanning a computer with powerful anti-malware application designed to combat rogue programs.

Type	Rogue
Sub-Type	FakeAV
OS Affected	Windows

What are the Symptoms of AV-Clean Infection?

Virus scan with several threat detected is AV-Clean’s primary way to deceive its victims. If not all, most of the reported threats are fabricated and does not exists on the computer.

It will modify Windows Registry and add the following entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{82D2D870-9F4E-4C67-8026-6919BF6DB739}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\AVClean
HKEY_LOCAL_MACHINE\SOFTWARE\Ebiz
HKEY_LOCAL_MACHINE\SOFTWARE\Ebiz\AV CLEAN
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_AVFMON
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_AVFMON\0000
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_AVFMON\0000\Control
HKEY_CURRENT_USER\Software\EGN
HKEY_CURRENT_USER\Software\EGN\AV-SCAN pro
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] AVClean = “”%ProgramFiles%\AVClean\AVClean.exe” /Scan”
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\AVClean] “AVClean”
[HKEY_LOCAL_MACHINE\SOFTWARE\Ebiz\AV CLEAN] “%ProgramFiles%\AVClean”
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_AVFMON\0000\Control] “AVFMON”
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\AVFMON\Security] “\??\%ProgramFiles%\avclean\etc\AVFilterDriver.SYS”

The threat will drop the following malicious files and directories:

%ProgramFiles%\AVClean\db
%ProgramFiles%\AVClean\etc
%ProgramFiles%\AVClean\etc\temp
%ProgramFiles%\AVClean\Lang
%ProgramFiles%\AVClean\skin
%ProgramFiles%\AVClean\temp
%ProgramFiles%\avclean\etc\avreg.exe
%ProgramFiles%\avclean\etc\avfilterdriver.sys
%Temp%\AV CLEAN\list_control
%Temp%\nsu2.tmp
%Temp%\AV CLEAN
c:\DelUS.bat

Follow these Procedures to Remove AV-Clean

Procedure 1: Manual Removal

For users with technical skills in dealing with computer problems, executing this manual removal is enough to stop the malware. However, we highly recommend running anti-malware scan to remove other hidden files. For users who are not tech-savvy, you must skip this step. Start on Procedure 2 and proceed onwards. Automatic removal takes longer to accomplish but is less difficult to execute.

1. Restart your computer in Safe Mode with Networking

- After turning On the power of the computer, just before Windows start, press F8.
- From the selections, choose Safe Mode with Networking. Please use keyboard's arrow up/down to navigate between selections and press Enter to proceed.

2. Remove Registry entries added by AV-Clean. You MUST BACKUP YOUR REGISTRY FIRST.
- Click Start > Run.
- Type in the field, regedit.
- Navigate and look for the registry entries mentioned above and delete if necessary.

3. Delete malicious files that the threat added:
- Base on the given location above, browse and delete the file.
- If no location is given, click Start>Search> and search for the files.
- If cannot be deleted, press Ctrl+Alt+Del to access Task Manager, see if the file is running in the process. If it is, select the file and click End Process. Perform file delete again.

4. Scan computer with Antivirus Program
- Update antivirus program.
- Scan computer and delete all detected threats.
- Restart Windows.

Procedure 2: Scan and remove AV-Clean files with MalwareBytes Anti-Malware

To remove AV-Clean, download Malwarebytes Anti-Malware by clicking on the button below. This tool is effective in getting rid of Trojans, viruses and malware.

1. After downloading, please install the program using the default settings.
2. At the end of the installation, please make sure that it will download necessary updates.
3. Once update has completed. The tool will launch.
4. Thoroughly scan the computer and remove all threats detected by Malwarebytes Anti-Malware.

Protect your PC from AV-Clean or Similar Attack

Turn On Security Features of your Internet Browser

For safe browsing, each browser programs have their own features for blocking malicious Internet traffic. This feature is capable of detecting whether the site you are trying to visit is listed as harmful and infected with viruses. Phishing and malware web sites will not escape the filtering applied by your browser if the feature is active. Here are the safety features for corresponding Internet browsers.

• Internet Explorer - Smart Screen Filter
  This feature of Internet Explorer will check web pages for harmful entities. SmartScreen Filter immediately alerts you if it found the page suspicious. View complete information from this page.
• Google Chrome - Phishing and Malware Protection
  Safe browsing feature of Google Chrome uses a technology that protects the computer against virus and malware attacks that may arise while browsing the web. Click here to activate this feature.
• Mozilla Firefox - Block Attack Site and Web Forgeries

Install a Decent Anti-malware Program

Aside from having up-to-date anti-virus software, your computer will be safer if it is protected by anti-malware program. Anti-malware not just blocks malicious files from entering the computer but also checks if the web site you are trying to visit contains harmful elements.

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