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Win32.HLLW.Autoruner1.10959

Added to the Dr.Web virus database: 2012-01-13

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Taskman' = '<SYSTEM32>\Rewolf.pif'
Infects the following executable system files:
  • <SYSTEM32>\dllcache\userinit.exe
  • <SYSTEM32>\userinit.exe
Creates the following files on removable media:
  • <Drive name for removable media>:\Lucky_Dog.zip
  • <Drive name for removable media>:\Rewolf.pif
  • <Drive name for removable media>:\aUTorUn.inf
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
Modifies file system :
Creates the following files:
  • <SYSTEM32>\Eranda
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\Lucky_Dog.zip
  • <Drive name for removable media>:\Rewolf.pif
  • <Drive name for removable media>:\aUTorUn.inf