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Win32.HLLW.Autoruner.47528

Added to the Dr.Web virus database: 2011-04-12

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'filesystem' = '%WINDIR%\Help\tmp.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'JavaUpdateLauncher' = '<SYSTEM32>\window.kno'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\setup.exe
  • <Drive name for removable media>:\1272910.exe
Malicious functions:
Creates and executes the following:
  • <SYSTEM32>\window.kno 
Injects code into
the following system processes:
  • <SYSTEM32>\svchost.exe
Modifies settings of Windows Internet Explorer:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Associations] 'LowRiskFileTypes' = '.exe;.chm;.kno'
Modifies file system :
Creates the following files:
  • %WINDIR%\Help\tmp.exe
  • <SYSTEM32>\window.kno
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\1272910.exe
  • <Drive name for removable media>:\autorun.inf
  • <SYSTEM32>\window.kno
  • %WINDIR%\Help\tmp.exe
Network activity:
Connects to:
  • '<Private IP address>':139
  • '<Private IP address>':80
  • '<Private IP address>':445
Miscellaneous:
Searches for the following windows:
  • ClassName: '#32770' WindowName: ''
  • ClassName: 'SysListView32' WindowName: ''
  • ClassName: 'Indicator' WindowName: ''
  • ClassName: 'MS_WINHELP' WindowName: ''