The following instructions have been created to help you to get rid of "Win32.VB.ayo" manually.
Use this guide at your own risk; software should usually be better suited to remove malware, since it is able to look deeper.

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Threat Details:

  • trojan

Win32.VB.ayo copies malicious executable files into the system directory, starts itself via an autorun named "Windows MSN" and via an entry in the Winlogon without giving the user a possibility to cancel that process. Also blocks RegEdit and command line.
Removal Instructions:


Please use Spybot-S&D, RunAlyzer or msconfig.exe to remove the following autorun entries.
  • Entries named "Windows MSN" and pointing to "<$SYSDRIVE>\Program Files\Common Files\Microsoft Shared\DAO\MSN.msn".


Important: There are more files that cannot be safely described in simple words. Please use Spybot-S&D to remove them.


You can use regedit.exe (included in Windows) to locate and delete these registry entries.
  • Delete the registry value "(Default)=%SystemRoot%\System32\shell32.dll,0" at "HKEY_CLASSES_ROOT\comfile\DefaultIcon\".
  • Delete the registry key "JambanMuV2" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\".
  • Remove ""<$SYSDIR>\"" from registry value "Shell" at "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\".
If Win32.VB.ayo uses rootkit technologies, use our RegAlyzer, RootAlyzer or our Total Commander anti-rootkit plugins.

Final Words:

If neither Spybot-S&D nor self help did resolve the issue or you would prefer one on one help,
  1. Please read these instructions before requesting assistance,
  2. Then start your own thread in the Malware Removal Forum where a volunteer analyst will advise you as soon as available.