This file is a harmful and undesirable program. Probably virus. It's recommended to delete it.
What is ns.exe Windows startup process
File name: ns.exe
Program name: NS
Description: AGOBOT-HS WORM
Information added by: beireke at 30 October 2008
Hint: If ns.exe file is a virus or trojan, we recommend to use a antivirus software or registry cleaner.