Technical Information
To ensure autorun and distribution:
Creates the following services:
- [<HKLM>\SYSTEM\ControlSet001\Services\msSystem] 'Start' = '00000002'
Malicious functions:
Creates and executes the following:
- '<Current directory>\mupdate.exe'
Searches for windows to
detect programs and games:
- ClassName: 'TXGuiFoundation' WindowName: '(null)'
Restores hooked functions in System Service Descriptor Table (SSDT).
Modifies file system :
Creates the following files:
- %TEMP%\MSSETUP.TSK
- %TEMP%\WINDNSAPI.IME
- %TEMP%\~ЂB4D8\20130627181447_000021c4.tmp
- %TEMP%\~ЂBB16\C
- %TEMP%\MSAPI.DRV
- <Current directory>\mupdate.exe
- %TEMP%\MSSYSTEM.DRV
Deletes the following files:
- %TEMP%\WINDNSAPI.IME
- <Current directory>\mupdate.exe
- %TEMP%\MSAPI.DRV
- %TEMP%\MSSYSTEM.DRV
Moves the following files:
- from %TEMP%\~ЂB4D8\20130627181447_000021c4.a to %TEMP%\~ЂB4D8\20130627181447_000021c4.s
- from %TEMP%\~ЂB4D8\20130627181447_000021c4.tmp to %TEMP%\~ЂB4D8\20130627181447_000021c4.a
- from %TEMP%\MSSETUP.TSK to %WINDIR%\system\MSSETUP.TSK
Network activity:
UDP:
- '20#.#6.177.33':8000
