After downloading file installer process runs and uses all memory When I download a file from the internet a process starts with name "installer" and uses all the available memory until my Mac crashes.

It's not related to the browser — I tested with Chrome and Safari.
The only solution I have is to kill the process from Terminal.

What is installer? How can I delete installer process from my Mac?

I have a 15″ Retina MacBook Pro with 16 GB memory.
I used EasyFind. It located right away all the files and folders matching my research criterias (in that specific case I was looking for "installer")
Deleted it right away.
Worked like a charm!