Upvote:11
if you overstay the end date of your authorized stay, as provided by the CBP officer at a port-of-entry, or United States Citizenship and Immigration Services (USCIS), your visa will automatically void or cancel
https://travel.state.gov/content/visas/en/general/visa-expiration-date.html
You must apply for a new visa if you want to visit again. You will overstay less than 180 days so you will not be banned. However, unless you have strong proof to convince the visa officer that you will not breach your visa again, you will not get the visa.
If you get caught before you leave, it's going to be another story.