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Win32.HLLW.Autoruner.52722

Added to the Dr.Web virus database: 2011-06-27

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Windows] 'load' = '"%APPDATA%\Microsoft\esentutl.exe"'
Malicious functions:
Executes the following:
  • <SYSTEM32>\dumprep.exe 2784 -dm 7 7 "%TEMP%\WERc57f.dir00\esentutl.exe.hdmp" 16325836412027324
  • <SYSTEM32>\dumprep.exe 2784 -dm 7 7 "%TEMP%\WERc57f.dir00\esentutl.exe.mdmp" 16325836412027304
Modifies file system :
Creates the following files:
  • %TEMP%\WERc57f.dir00\esentutl.exe.hdmp
  • %TEMP%\WERc57f.dir00\esentutl.exe.mdmp
  • %TEMP%\WERc57f.dir00\manifest.txt
  • %TEMP%\WERc57f.dir00\appcompat.txt
  • %TEMP%\esentutl.exe
  • %APPDATA%\mstsc.exe
  • %APPDATA%\Microsoft\esentutl.exe
  • %WINDIR%\system\logman.exe
Network activity:
Connects to:
  • 'www.ka###rus.com':80
TCP:
HTTP GET requests:
  • www.ka###rus.com/img/gt.cgi?s=################
UDP:
  • DNS ASK www.ka###rus.com