CRONw - CRON for Windows

I don't know, is it bug or or not but it looks suspicious to me.

I installed CRONw 2.0 on Windows 2003 R2 and have following crontab.txt:
*/1 * * * * C:\\windows\\System32\\calc.exe

So, cron fires this job every minute but if I look Process Manager I got:
calc.exe
cmd.exe
perl.exe

so for every job cron fired, it creates cmd.exe and perl.exe and job
command. If I close calc.exe, then cmd.exe and perl.exe of that job command
ends respectively.

So, is it normal?