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Win32.HLLW.Autoruner.56931

Added to the Dr.Web virus database: 2011-08-24

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'nwizs' = '%PROGRAM_FILES%\NVIDIA Corporation\PhysX\Common\nwizs.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\recycle.{645FF040-5081-101B-9F08-00AA002F954E}\recycle.exe
Malicious functions:
Creates and executes the following:
  • %PROGRAM_FILES%\NVIDIA Corporation\PhysX\Common\nwizs.exe 
Executes the following:
  • <SYSTEM32>\cmd.exe /c """%TEMP%\delme.bat"" "
Injects code into
the following system processes:
  • %WINDIR%\Explorer.EXE
Searches for windows to
detect programs and games:
  • ClassName: 'TXGuiFoundation' WindowName: ''
Modifies file system :
Creates the following files:
  • C:\recycle.{645FF040-5081-101B-9F08-00AA002F954E}\recycle.exe
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\movie[1].htm
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\0D6B6PI5\home[1]
  • C:\autorun.inf
  • %PROGRAM_FILES%\NVIDIA Corporation\PhysX\Common\nwizs.exe
  • %TEMP%\rasphones.exe
  • %PROGRAM_FILES%\NVIDIA Corporation\PhysX\Common\nvwdmcpl.dll
  • %TEMP%\delme.bat
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\autorun.inf
  • C:\autorun.inf
Deletes the following files:
  • %TEMP%\rasphones.exe
Network activity:
Connects to:
  • 'hi.##idu.com':80
  • 'e1#3.tk':80
  • 'localhost':1036
TCP:
HTTP GET requests:
  • hi.##idu.com/px44554344/home
  • e1#3.tk/movie.htm
UDP:
  • DNS ASK hi.##idu.com
  • DNS ASK www.ba##u.com
  • DNS ASK e1#3.tk
Miscellaneous:
Searches for the following windows:
  • ClassName: 'GxWindowClassD3d' WindowName: ''
  • ClassName: 'GxWindowClass' WindowName: ''
  • ClassName: 'MS_WebcheckMonitor' WindowName: ''
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: 'MS_AutodialMonitor' WindowName: ''