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Win32.HLLW.Autoruner.17082

Added to the Dr.Web virus database: 2012-08-20

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'kxva' = '<SYSTEM32>\kxvo.exe'
Substitutes the following executable system files:
  • <DRIVERS>\cdaudio.sys with <DRIVERS>\SET3.tmp
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\hni.cmd
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
Creates and executes the following:
  • %WINDIR%\hg.exe
Executes the following:
  • <SYSTEM32>\regsvr32.exe /s <SYSTEM32>\dse235rgd0.dll
Injects code into
the following system processes:
  • %WINDIR%\Explorer.EXE
Installs hooks to intercept notifications
on keystrokes:
  • Handler for all processes: <SYSTEM32>\wedasgads0.dll
Searches for windows to
bypass different anti-viruses:
  • ClassName: 'AVP.Product_Notification' WindowName: ''
  • ClassName: 'AVP.AlertDialog' WindowName: ''
Forces autoplay for removable media.
Modifies file system :
Creates the following files:
  • C:\hni.cmd
  • <DRIVERS>\SET3.tmp
  • C:\autorun.inf
  • %TEMP%\ll.rar
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\ll[1].rar
  • <SYSTEM32>\kxvo.exe
  • %WINDIR%\hg.exe
  • <SYSTEM32>\dse235rgd0.dll
  • <DRIVERS>\SET2.tmp
  • <SYSTEM32>\wedasgads0.dll
Sets the 'hidden' attribute to the following files:
  • C:\autorun.inf
  • <Drive name for removable media>:\hni.cmd
  • <Drive name for removable media>:\autorun.inf
  • <SYSTEM32>\kxvo.exe
  • <SYSTEM32>\wedasgads0.dll
  • C:\hni.cmd
Deletes the following files:
  • C:\autorun.inf
  • C:\hni.cmd
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\hni.cmd
  • %WINDIR%\hg.exe
  • <DRIVERS>\cdaudio.sys
  • %TEMP%\ll.rar
  • <DRIVERS>\SET2.tmp
Moves itself:
  • from <Full path to virus> to %TEMP%\nod1.tmp
Network activity:
Connects to:
  • 'zx##5.com':80
  • 'localhost':1037
TCP:
HTTP GET requests:
  • zx##5.com/hg2/ll.rar
UDP:
  • DNS ASK zx##5.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''