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Win32.HLLW.Autoruner.50391

Added to the Dr.Web virus database: 2011-05-25

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'winlogin' = '%WINDIR%\winlogin.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.exe
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\photos.exe
Malicious functions:
Creates and executes the following:
  • %WINDIR%\winlogin.exe 
Modifies file system :
Creates the following files:
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\pochta[1].php
  • %WINDIR%\winlogin.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\autorun.exe
Network activity:
Connects to:
  • 'ne##ns.biz':80
  • 'localhost':1036
TCP:
HTTP GET requests:
  • ne##ns.biz/pochta.php
UDP:
  • DNS ASK ne##ns.biz
Miscellaneous:
Searches for the following windows:
  • ClassName: 'MS_WebcheckMonitor' WindowName: ''
  • ClassName: 'MS_WINHELP' WindowName: ''
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: 'MS_AutodialMonitor' WindowName: ''
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