Technical Information
To ensure autorun and distribution:
Creates the following services:
- [<HKLM>\SYSTEM\ControlSet001\Services\360tray] 'Start' = '00000002'
Changes the following executable system files:
- <DRIVERS>\beep.sys
Substitutes the following executable system files:
- <SYSTEM32>\dllcache\beep.sys with <SYSTEM32>\dllcache\beep.sys.new
- <DRIVERS>\beep.sys with <DRIVERS>\beep.sys.new
Infects the following executable files:
- <DRIVERS>\beep.sys
Malicious functions:
Creates and executes the following:
- '<SYSTEM32>\360tray.exe'
Restores hooked functions in System Service Descriptor Table (SSDT).
Modifies file system :
Creates the following files:
- %WINDIR%\Temp\31633.dat
- <SYSTEM32>\360tray.dat
- <SYSTEM32>\360tray.dll
- %TEMP%\24694.dat
- <SYSTEM32>\360tray.exe
Deletes the following files:
- <SYSTEM32>\360tray.exe
- <SYSTEM32>\360tray.dat
- %TEMP%\24694.dat
- %WINDIR%\Temp\31633.dat
Deletes itself.
Network activity:
Connects to:
- 'we####.meibu.com':2009
UDP:
- DNS ASK we####.meibu.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
