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Win32.HLLW.Autoruner.52273

Added to the Dr.Web virus database: 2011-06-23

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{9D71D88C-C598-4935-C5D1-43AA4DB90836}] 'stubpath' = ''
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\System.exe
Malicious functions:
Injects code into
the following system processes:
  • %WINDIR%\Explorer.EXE
Modifies file system :
Creates the following files:
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\0D6B6PI5\401[1]
  • <SYSTEM32>\Bifrost\server.exe
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\301[1]
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\System.exe
Network activity:
Connects to:
  • 'kl####i.no-ip.org':81
  • 'th####atebay.org':80
TCP:
HTTP GET requests:
  • th####atebay.org/top/401
  • th####atebay.org/top/301
UDP:
  • DNS ASK kl####i.no-ip.org
  • DNS ASK th####atebay.org