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Profil

Win32.HLLW.Autoruner.51396

Added to the Dr.Web virus database: 2011-06-06

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '' = '%WINDIR%\winlogon.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '' = '%WINDIR%\winlogon.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\DrivesGuideInfo\S-1-7-21-1439977401-7444491467-600013330-9141\autorun.exe
  • <Drive name for removable media>:\DrivesGuideInfo\S-1-7-21-1439977401-7444491467-600013330-9141\Desktop.ini
Malicious functions:
Creates and executes the following:
  • %WINDIR%\winhelp32.exe (downloaded from the Internet) 
  • %WINDIR%\winlogon.exe 
Modifies file system :
Creates the following files:
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\ULU3YH2D\SYN[1]
  • %WINDIR%\version.txt
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\SL6TKFAX\VERSION[1].TXT
  • %WINDIR%\ssms.exe
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\DATA[1]
  • %WINDIR%\winlogon.exe
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\0D6B6PI5\VERSION[1].TXT
  • %WINDIR%\winhelp32.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\DrivesGuideInfo\S-1-7-21-1439977401-7444491467-600013330-9141\Desktop.ini
Deletes the following files:
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\0D6B6PI5\VERSION[1].TXT
Network activity:
Connects to:
  • 'tu###eru.org':80
  • 'tu###eru.net':80
  • 'localhost':1034
TCP:
HTTP GET requests:
  • tu###eru.net/SYN
  • tu###eru.org/VERSION.TXT
  • tu###eru.net/DATA
UDP:
  • DNS ASK tu###eru.org
  • DNS ASK tu###eru.net
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: ''