Short internship (1 month) at a boutique IB firm.. not sure what to write on my resume

Dear Esteemed Monkeys,

I'm an undergrad majoring in bio-engineering trying to get into IBD. I decided to get into this industry this past semester -- I knew I must have at least one summer banking internship if I want to do banking after college.. I'm at a target school but as a rising senior looking for summer internship in the spring, I did not have much option. I ended up getting an offer at a boutique firm in Asia, but they could only offer me an internship for 1 month, with no return offer. I didn't have any other option so I ended up working for the firm and today was my last day at work.

I want to put this experience in my resume but I've hardly done any valuation like DCF given the fact that I only worked for a month -- I've drafted teasers/company profiles, helped with pitch book drafting and did a bit of VDR managing (did quite a bit of translation as well but I don't think putting this down would help). I was being proactive about asking for work but most of the time associates were either too busy / don't have something to give me. I did my best to learn as much as possible about the deal I was helping with, but I am quite lost on how I could sell my experience to future interviewers..

What would you recommend me write on my resume?