This file is a harmful and undesirable program. Probably virus. It's recommended to delete it.
What is mskj.exe Windows startup process
File name: mskj.exe
Program name: mskj
Description: Kaemon TROJAN
Information added by: Mana at 29 February 2008
Hint: If mskj.exe file is a virus or trojan, we recommend to use a antivirus software or registry cleaner.