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Win32.HLLW.Autoruner.62424

Added to the Dr.Web virus database: 2011-10-06

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'WinDefend' = '%TEMP%\<File name>.exe'
  • [<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\policies\Explorer\run] 'winworld' = '%TEMP%\rooter.exe'
  • [<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run] 'winworld' = '%TEMP%\rooter.exe'
  • [<HKCU>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'winworld' = '%TEMP%\rooter.exe'
  • [<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{982DE2AF-B8AB-C6AB-30BF-BABAA8DECEDB}] 'StubPath' = '%TEMP%\rooter.exe'
  • [<HKCU>\SOFTWARE\Microsoft\Active Setup\Installed Components\{982DE2AF-B8AB-C6AB-30BF-BABAA8DECEDB}] 'StubPath' = '%TEMP%\rooter.exe'
Creates the following files on removable media
  • <Drive name for removable media>:\vbc.exe
  • <Drive name for removable media>:\autorun.ini
Malicious functions
To bypass firewall, removes or modifies the following registry keys
  • [<HKLM>\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
  • [<HKLM>\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\rooter.exe' = '%TEMP%\rooter.exe:*:Enabled:Windows Messange...
  • [<HKLM>\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\vbc.exe' = '%TEMP%\vbc.exe:*:Enabled:Windows Messanger'
Injects code into
the following user processes:
  • vbc.exe
Modifies file system
Creates the following files
  • %TEMP%\vbc.exe
  • %TEMP%\<File name>.exe
  • %TEMP%\rooter.exe
  • %TEMP%\serpentus
Sets the 'hidden' attribute to the following files
  • <Drive name for removable media>:\vbc.exe
  • <Drive name for removable media>:\autorun.ini
Network activity
UDP
  • DNS ASK ce####s2.no-ip.org
Miscellaneous
Creates and executes the following
  • '%TEMP%\vbc.exe'
  • '%WINDIR%\syswow64\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f' (with hidden window)
  • '%WINDIR%\syswow64\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%TEMP%\vbc.exe" /t REG_SZ /d "%TEMP%\vbc.exe:*:Enabled:W...' (with hidden window)
  • '%WINDIR%\syswow64\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%TEMP%\rooter.exe" /t REG_SZ /d "%TEMP%\rooter.exe:*:Ena...' (with hidden window)
Executes the following
  • '%WINDIR%\syswow64\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
  • '%WINDIR%\syswow64\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%TEMP%\vbc.exe" /t REG_SZ /d "%TEMP%\vbc.exe:*:Enabled:W...
  • '%WINDIR%\syswow64\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%TEMP%\rooter.exe" /t REG_SZ /d "%TEMP%\rooter.exe:*:Ena...
  • '%WINDIR%\syswow64\reg.exe' ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
  • '%WINDIR%\syswow64\reg.exe' ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%TEMP%\rooter.exe" /t REG_SZ /d "%TEMP%\rooter.exe:*:Enabled:Wi...
  • '%WINDIR%\syswow64\reg.exe' ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%TEMP%\vbc.exe" /t REG_SZ /d "%TEMP%\vbc.exe:*:Enabled:Windows ...

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