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Profil

Win32.HLLW.Autoruner.55303

Added to the Dr.Web virus database: 2011-07-30

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'WindowsDll' = '%APPDATA%\WinLogin.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\Sys.exe
Malicious functions:
Creates and executes the following:
  • %APPDATA%\WinLogin.exe 
Terminates or attempts to terminate
the following user processes:
  • outpost.exe
  • AVP.EXE
Modifies file system :
Creates the following files:
  • %APPDATA%\WinLogin.exe
  • %APPDATA%\explorer.exe
  • C:\Sys.exe
  • C:\autorun.inf
Sets the 'hidden' attribute to the following files:
  • <Full path to virus>
  • %APPDATA%\WinLogin.exe
  • %APPDATA%\explorer.exe
  • <Drive name for removable media>:\autorun.inf
  • C:\Sys.exe
  • C:\autorun.inf
  • <Drive name for removable media>:\Sys.exe
Deletes the following files:
  • <Drive name for removable media>:\Sys.exe
  • <Drive name for removable media>:\autorun.inf
  • C:\Sys.exe
  • C:\autorun.inf