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Profile

Win32.HLLW.Chao.4

Added to the Dr.Web virus database: 2013-05-21

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'WinSysQQ' = '%WINDIR%\62QQ.exe'
Malicious functions:
Creates and executes the following:
  • '%WINDIR%\62QQ.exe'
Executes the following:
  • '<SYSTEM32>\cmd.exe' /c %TEMP%\Deleteme.bat
Injects code into
the following system processes:
  • %WINDIR%\Explorer.EXE
Modifies file system :
Creates the following files:
  • %TEMP%\Deleteme.bat
  • %WINDIR%\62QQ.exe
  • %WINDIR%\ntshruis2.dll
Sets the 'hidden' attribute to the following files:
  • %WINDIR%\62QQ.exe
  • %WINDIR%\ntshruis2.dll
Deletes the following files:
  • <DRIVERS>\etc\hosts
Deletes itself.
Network activity:
Connects to:
  • '11#.#30.125.43':707
Miscellaneous:
Searches for the following windows:
  • ClassName: 'SysPager' WindowName: ''
  • ClassName: 'ToolbarWindow32' WindowName: ''
  • ClassName: 'Shell_TrayWnd' WindowName: ''
  • ClassName: 'TrayNotifyWnd' WindowName: ''