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Win32.HLLW.Autoruner1.57190

Added to the Dr.Web virus database: 2013-09-26

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\dcfcdbaafaecc] 'Startup' = 'sup'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\dcfcdbaafaecc] 'Logon' = 'l'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\dcfcdbaafaecc] 'DllName' = '<SYSTEM32>\dcfcdbaafaecc.dll'
Malicious functions:
Executes the following:
  • '%PROGRAM_FILES%\Internet Explorer\IEXPLORE.EXE' http://wl.##verss.com/v306/repins.rss?ms############################################################################################################################################
  • '<SYSTEM32>\cmd.exe' /c %TEMP%\568d7a4aba7ece2d1b2472e652cb7333.bat
Injects code into
the following system processes:
  • <SYSTEM32>\winlogon.exe
Modifies file system :
Creates the following files:
  • <SYSTEM32>\RCX1.tmp
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\repins[1].rss
  • %TEMP%\568d7a4aba7ece2d1b2472e652cb7333.bat
  • <SYSTEM32>\dcfcdbaafaecc.dll
Deletes the following files:
  • <SYSTEM32>\dcfcdbaafaecc.dll
Moves the following files:
  • from <SYSTEM32>\RCX1.tmp to <SYSTEM32>\dcfcdbaafaecc.dll
Deletes itself.
Network activity:
Connects to:
  • 'wl.##verss.com':80
  • 'localhost':1036
TCP:
HTTP GET requests:
  • wl.##verss.com/v306/repins.rss?ms############################################################################################################################################
UDP:
  • DNS ASK wl.##verss.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'MS_AutodialMonitor' WindowName: '(null)'
  • ClassName: 'MS_WebcheckMonitor' WindowName: '(null)'
  • ClassName: '' WindowName: '(null)'
  • ClassName: 'Shell_TrayWnd' WindowName: '(null)'