There are no such rules that only MBA's can work in MNC's. There are lot of BCom and MCom students who are working in MNC's like Zack Research and other analytics companies. So if you have good knowledge and understanding in the genre then you can obviously go through the walk in interviews for different MNC's.

As you haven't mentioned your background i.e., your bachelors field, its quite hard to give you directions specified to your field.

Highly recommended websites for jobs related notifications are:

• Naukri
• Internshala (The app also have job section)
• LinkedIn

I hope my answer helps. All the very best for your future endeavors!