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Win32.HLLW.Autoruner.53530

Added to the Dr.Web virus database: 2011-07-07

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '<Virus name>.exe' = '%APPDATA%\<Virus name>.exe'
Creates or modifies the following files:
  • %HOMEPATH%\Start Menu\Programs\Startup\JWUtH.exe
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\JWUtH.exe
Malicious functions:
Creates and executes the following:
  • %PROGRAM_FILES%\Java\java.exe 
  • %APPDATA%\lshss.exe 
Executes the following:
  • %WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:"%TEMP%\RES2.tmp"" "%TEMP%\CSC1.tmp"
  • %WINDIR%\Microsoft.NET\Framework\v2.0.50727\csc.exe /noconfig /fullpaths @"%TEMP%\g9_8wofk.cmdline"
Modifies file system :
Creates the following files:
  • %TEMP%\%USERNAME%2.txt
  • %PROGRAM_FILES%\Java\java.exe
  • %APPDATA%\<Virus name>.exe
  • %TEMP%\%USERNAME%8
  • %TEMP%\%USERNAME%7
  • %APPDATA%\%USERNAME%log.dat
  • %TEMP%\g9_8wofk.dll
  • %TEMP%\g9_8wofk.cmdline
  • %TEMP%\g9_8wofk.0.cs
  • %APPDATA%\lshss.exe
  • %TEMP%\RES2.tmp
  • %TEMP%\CSC1.tmp
  • %TEMP%\g9_8wofk.out
Sets the 'hidden' attribute to the following files:
  • %PROGRAM_FILES%\Java\java.exe
  • %APPDATA%\%USERNAME%log.dat
  • <Drive name for removable media>:\JWUtH.exe
  • <Drive name for removable media>:\autorun.inf
Deletes the following files:
  • %TEMP%\%USERNAME%2.txt
  • %TEMP%\g9_8wofk.out
  • %TEMP%\%USERNAME%7
  • %TEMP%\%USERNAME%8
  • %TEMP%\g9_8wofk.dll
  • %TEMP%\CSC1.tmp
  • %TEMP%\RES2.tmp
  • %TEMP%\g9_8wofk.0.cs
  • %TEMP%\g9_8wofk.cmdline
Network activity:
Connects to:
  • 'ch####9.no-ip.biz':82
  • 'ch####9.no-ip.biz':100
UDP:
  • DNS ASK ch####9.no-ip.biz
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''