Win32.HLLW.Autoruner.51741

Added to the Dr.Web virus database: 2011-06-14

Virus description added: 2011-06-14

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'explorer.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,<SYSTEM32>\Mcsheld.exe '
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,<SYSTEM32>\mcsheld.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'dpzProtect' = '<SYSTEM32>\Mcsheld.exe '

Creates the following files on removable media:

Malicious functions:

Modifies settings of Windows Explorer:

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoSMMyPictures' = '00000001'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoStartMenuMyMusic' = '00000001'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFolderOptions' = '00000001'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoRecentDocsMenu' = '00000001'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoSMHelp' = '00000001'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoStartMenuMFUprogramsList' = '00000001'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoSMMyDocs' = '00000001'

Modifies settings of Windows Internet Explorer:

[<HKCU>\Software\Microsoft\Internet Explorer\Main] 'Window Title' = 'Micrsoft Internet Explorer.'

Modifies file system :

Creates the following files:

Sets the 'hidden' attribute to the following files:

Miscellaneous:

Searches for the following windows: