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Win32.HLLM.Graz.300

Added to the Dr.Web virus database: 2012-10-25

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates the following services:
  • [<HKLM>\SYSTEM\ControlSet001\Services\Qrstuv Xyabcdef Hij] 'Start' = '00000002'
Malicious functions:
Executes the following:
  • <SYSTEM32>\svchost.exe -k imgsvc
  • <SYSTEM32>\svchost.exe -k netsvcs
Modifies file system :
Creates the following files:
  • C:\system32.txt
  • %PROGRAM_FILES%\Vrst\Brstuvwxy.pic
  • C:\1850800.dll
  • C:\WinWall32.gif
Sets the 'hidden' attribute to the following files:
  • %PROGRAM_FILES%\Vrst\Brstuvwxy.pic
Deletes the following files:
  • C:\1850800.dll
  • C:\WinWall32.gif
  • C:\system32.txt
Deletes itself.
Network activity:
Connects to:
  • 'yn###.gnway.net':9033
UDP:
  • DNS ASK yn###.gnway.net