Good Day Siddhant_Mashalkar,
My name is Carlo, I'm an Independent Advisor and community member like you.
I am also using Windows 10 pc. Let us work together to sort this out.
DismHost.exe in temp folder is caused by Windows Defender not being able to run a scheduled scan.
You can manually perform a scan in using the Windows Defender to resolve this issue.
It is not a virus or a potentially unwanted app. Those files are all safe to leave on the system you can delete them as well if you wanted to.
I hope the information above helps.
Have a wonderful day ahead and stay safe.
Sincerely,
Carlo T.