Hi Aarti
yes you can become a business analysis with you current experience. You can join any foundation BA training program which can gives you all the knowledge about the working of BA.
The course should be evaluated and approved by IIBA, so you get both training as well as valid certification. Business analysis course is based on Business Analysis Body of Knowledge (BABOK Guide) version 2.0 which involves theory, practical, case study, project and assignments.
After getting an experiance of 3-4 year as Business analysis you can go for the certification of CCBA OR CBAP.
Regards,
Manish Singh
ANISAN Technologies