We checked some samples of SMSMUX.EXE and detected the file SMSMUX.EXE as threat.
Remove the SMSMUX.EXE file from your computer right now.
Removal tool: http://www.unhackme.com

SMSMUX.EXE Information and Removal:
SMSMUX.EXE is known as: Trojan-Downloader.Agent2 [Ikarus].
MD5 of SMSMUX.EXE = 58F1556261D3D1F9C54437EBDB4AD40C
SMSMUX.EXE size is 286720 bytes.
Full path on a computer: %PROGRAMFILES%\SMS1000\SMS1000MAIN\SMSMUX.EXE
Related Files:
C:\DELUS.BAT
%PROGRAMFILES%\SMS1000\SMS1000MAIN\SMSM.ICO
%PROGRAMFILES%\SMS1000\SMS1000MAIN\SMSMINS.EXE
%PROGRAMFILES%\SMS1000\SMS1000MAIN\SMSMUPDATER.EXE
%PROGRAMFILES%\SMS1000\SMS1000MAIN\SMSMUX.EXE
%PROGRAMFILES%\SMS1000\SMS1000MAIN\SMSUUX.EXE
%PROGRAMFILES%\SMS1000\SMS1000MAIN\UNINST.EXE