Remove osascript starting after boot and get to know what it does
As the parent process of osascript is 'bash', that suggests that a command line script is calling AppleScript.
/Library/Scripts/WIS/tmp/Scripts/startup.sh

is very likely the culprit.
Have you installed anything that this might relate to?
If not, I would delete it, and download Malwarebytes to check for malware.