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Win32.HLLM.Graz.335

Added to the Dr.Web virus database: 2013-06-29

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\userinit.exe] 'Debugger' = 'winqqpack.exe'
Malicious functions:
Injects code into
the following system processes:
  • %WINDIR%\Explorer.EXE
the following user processes:
  • opera.exe
Modifies file system :
Creates the following files:
  • <SYSTEM32>\winqqpack.exe
Deletes itself.
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: '(null)'