Cook the pasta following the instructions on the package until tender. Drain well, then rinse under cold water to stop the cooking process and cool it down completely.
Transfer the cooled pasta to a large mixing bowl. Add the chopped tomatoes, cucumbers, and red onion.
In a separate small bowl, prepare the dressing by mixing the balsamic vinegar, olive oil, chopped basil, coconut sugar, and sea salt. Stir or whisk until everything is well combined.
Pour the dressing over the pasta and vegetables. Mix gently until all the ingredients are evenly coated.
Place the salad in the refrigerator and let it chill until cold. Serve when ready.