FakeAlert-MalDef

FakeAlert-MalDef will install Malware Defender and run a virus scan on the system. It will falsely claim that it found viruses and will require the user to register the product to clean the system.

The following registry keys are added or modified:

• HKEY_LOCAL_MACHINE\SOFTWARE\Malware Defender 2009\Lic
   "HDDCheck" = 5229FFE094F1F66F09D68757D35A29ED
  
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
  "malwaredef" = C:\Program Files\Malware Defender 2009\malwaredef.exe
  
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Malware Defender 2009
  "DisplayName" = Malware Defender 2009
  
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Malware Defender 2009
  "InstallDate" = 61104803803
  
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Malware Defender 2009
  "UninstallString" = C:\Program Files\Malware Defender\uninstall.exe

The following files are added:

• c:\Documents and Settings\[current user]\Start Menu\Programs\Malware Defender 2009\Malware Defender 2009.lnk
• c:\Documents and Settings\[current user]\Start Menu\Programs\Malware Defender 2009\Uninstall.lnk
• c:\Documents and Settings\All Users\Application Data\Microsoft\Media Index\Drivers\hdddriver.dll
• c:\Program Files\Malware Defender 2009\conf.cfg
• c:\Program Files\Malware Defender 2009\malwaredef.exe
• c:\Program Files\Malware Defender 2009\mbase.vdb
• c:\Program Files\Malware Defender 2009\quarantine.vdb
• c:\Program Files\Malware Defender 2009\queue.vdb
• c:\Program Files\Malware Defender 2009\uninstall.exe
• c:\Program Files\Malware Defender 2009\vbase.vdb

• Presence of previously mentioned registry entries
• Presence of previously mentioned files

Trojan do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. Distribution channels include spam emails, IRC, P2P networks, newsgroup postings, etc.

All Users:
Use current engine and DAT files for detection and removal.

Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).

But in some particular cases, the following steps need to be taken.

Please go to the Microsoft Recovery Console and restore a clean MBR.

On Windows XP:

• Insert the Windows XP CD into the CD-ROM drive and restart the computer.
• When the "Welcome to Setup" screen appears, press R to start the Recovery Console.
• Select the Windows installation that is compromised and provide the administrator password.
• Issue 'fixmbr' command to restore the Master Boot Record
• Follow onscreen instructions.
• Reset and remove the CD from CD-ROM drive.

On Windows Vista and 7:

• Insert the Windows CD into the CD-ROM drive and restart the computer.
• Click on "Repair Your Computer".
• When the System Recovery Options dialog comes up, choose the Command Prompt.
• Issue 'bootrec /fixmbr' command to restore the Master Boot Record.
• Follow onscreen instructions.
• Reset and remove the CD from CD-ROM drive.