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Win32.HLLW.Autoruner.47951

Added to the Dr.Web virus database: 2011-04-20

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKLM>\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run] '<File name>.exe' = '%ProgramFiles(x86)%\<File name>.exe'
Creates or modifies the following files
  • %APPDATA%\microsoft\windows\start menu\programs\startup\tsxkr.exe
Creates the following files on removable media
  • <Drive name for removable media>:\tsxkr.exe
  • <Drive name for removable media>:\autorun.inf
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] '%APPDATA%\ownzc.exe' = '%APPDATA%\ownzc.exe:*:Enabled:Windows Mess...
  • [<HKLM>\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\svchost.exe' = '%APPDATA%\svchost.exe:*:Enabled:Windows ...
Injects code into
the following user processes:
  • svchost.exe
Terminates or attempts to terminate
the following system processes:
  • <SYSTEM32>\svchost.exe
Modifies file system
Creates the following files
  • %APPDATA%\svchost.exe
  • %TEMP%\fbpnatkg.0.cs
  • %TEMP%\fbpnatkg.cmdline
  • %TEMP%\fbpnatkg.out
  • %TEMP%\cscd364.tmp
  • %TEMP%\resd374.tmp
  • %TEMP%\fbpnatkg.dll
  • %ProgramFiles(x86)%\<File name>.exe
  • %APPDATA%\ownzc.exe
  • %APPDATA%\data.dat
Sets the 'hidden' attribute to the following files
  • <Drive name for removable media>:\tsxkr.exe
  • <Drive name for removable media>:\autorun.inf
Deletes the following files
  • %TEMP%\resd374.tmp
  • %TEMP%\cscd364.tmp
  • %TEMP%\fbpnatkg.0.cs
  • %TEMP%\fbpnatkg.cmdline
  • %TEMP%\fbpnatkg.dll
  • %TEMP%\fbpnatkg.out
Network activity
UDP
  • DNS ASK ra#####ork.no-ip.net
Miscellaneous
Creates and executes the following
  • '%APPDATA%\svchost.exe'
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\csc.exe' /noconfig /fullpaths @"%TEMP%\fbpnatkg.cmdline"' (with hidden window)
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RESD374.tmp" "%TEMP%\CSCD364.tmp"' (with hidden window)
  • '%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 "%APPDATA%\svchost.exe" /t REG_SZ /d "%APPDATA%\svchost.e...' (with hidden window)
  • '%WINDIR%\syswow64\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%APPDATA%\ownzc.exe" /t REG_SZ /d "%APPDATA%\ownzc.exe:*...' (with hidden window)
Executes the following
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\csc.exe' /noconfig /fullpaths @"%TEMP%\fbpnatkg.cmdline"
  • '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RESD374.tmp" "%TEMP%\CSCD364.tmp"
  • '%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 "%APPDATA%\svchost.exe" /t REG_SZ /d "%APPDATA%\svchost.e...
  • '%WINDIR%\syswow64\cmd.exe' /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%APPDATA%\ownzc.exe" /t REG_SZ /d "%APPDATA%\ownzc.exe:*...
  • '%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 "%APPDATA%\ownzc.exe" /t REG_SZ /d "%APPDATA%\ownzc.exe:*:Enable...
  • '%WINDIR%\syswow64\reg.exe' ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "%APPDATA%\svchost.exe" /t REG_SZ /d "%APPDATA%\svchost.exe:*:En...

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