Win32.HLLW.Chao.4
Added to the Dr.Web virus database:
2013-05-21
Virus description added:
2013-05-21
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:
Executes the following:
- '<SYSTEM32>\cmd.exe' /c %TEMP%\Deleteme.bat
Injects code into
the following system processes:
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:
Deletes itself.
Miscellaneous:
Searches for the following windows:
- ClassName: 'SysPager' WindowName: ''
- ClassName: 'ToolbarWindow32' WindowName: ''
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'TrayNotifyWnd' WindowName: ''
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