Should I talk about my poor academic performance due to financial situation in my SOP? Background

So, I got into a premier institute of my country but had a hard time there. I always had to look for some sort of a job to support my family and as a result I graduated with six technical internships and a very poor GPA.

Now after four years I got myself into research and have an otherwise good profile, it's just that my GPA is so low that I have to explain about it in my SOP.

Is it okay if I talk about this? Or will this further hurt my chances?
With a low GPA, your chances are already quite slim. You need a way to explain it. But it is even more important that you can explain why the institution can expect that you will be a success in the future. Your poor background doesn't help with this, no matter the reason. If your situation can be expected to continue, then it will be especially difficult to convince anyone that your outcomes will be different. 

You have to make a case for the future, primarily.