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Win32.HLLP.Siggen.37

Added to the Dr.Web virus database: 2012-10-08

Virus description added:

Technical Information

To ensure autorun and distribution:
Infects the following executable system files:
  • <SYSTEM32>\runonce.exe
  • %WINDIR%\NOTEPAD.EXE
Substitutes the following executable system files:
  • <SYSTEM32>\dllcache\notepad.exe with <SYSTEM32>\dllcache\notepad.exe.new
  • <SYSTEM32>\dllcache\runonce.exe with <SYSTEM32>\dllcache\runonce.exe.new
  • %WINDIR%\NOTEPAD.EXE with %WINDIR%\notepad.exe.new
  • <SYSTEM32>\runonce.exe with <SYSTEM32>\runonce.exe.new
Modifies file system :
Moves the following files:
  • from <SYSTEM32>\dllcache\notepad.exe.new to <SYSTEM32>\dllcache\notepad.exe
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''