sm_exe is a backdoor program that allows an attacker to control a compromised computer from an unknown or remote location, so that he may use it for malicious intents. sm_exe enables the hacker so that he may access your private information, execute commands, change network settings and modify system files. Additional malware may be installed as well, making your computer slow or unstable.
sm_exe should be removed promptly once detected. To remove sm_exe manually, you must kill all associated running processes, then detect related files and values in the Windows registry in order to remove them. Manual removal is risky, and may damage your PC. To remove sm_exe automatically, it is advised that you use a reputable antispyware application such as Spyzooka, which is designed for this purpose.