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Win32.HLLW.Autoruner.56345

Added to the Dr.Web virus database: 2011-08-14

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Windows Update System' = '%WINDIR%\lsass.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Windows Update System' = '%WINDIR%\lsass.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\ADFDsddщGSjhgзйтззщ\DFG-2352-26235-2322322-624621221-2622255\usbBlock.exe
  • <Drive name for removable media>:\ADFDsddщGSjhgзйтззщ\DFG-2352-26235-2322322-624621221-2622255\Desktop.ini
Malicious functions:
Creates and executes the following:
  • %WINDIR%\lsass.exe 
Injects code into
the following system processes:
  • <SYSTEM32>\lsass.exe
Modifies file system :
Creates the following files:
  • %TEMP%\google_cachexB645g23wer3T.tmp
  • %WINDIR%\lsass.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\ADFDsddщGSjhgзйтззщ\DFG-2352-26235-2322322-624621221-2622255\usbBlock.exe
  • %WINDIR%\lsass.exe
Network activity:
Connects to:
  • 're#.##nware.info':3480
UDP:
  • DNS ASK re#.##nware.info
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''
  • ClassName: '' WindowName: 'BitDefender Firewall Alert'
  • ClassName: '' WindowName: 'Windows Security Alert'