Cook the pasta in boiling salted water according to the instructions on the packet, pour onto a sieve and drain. Clean, wash and cut the zucchini into sticks. Cut tomatoes into strips. Heat oil in a pan.
Fry the zucchini briefly in it. Add tomato strips and deglaze with vinegar, let cool down a bit. Mix yoghurt and mayonnaise. Season to taste with sugar, salt and pepper. Wash the basil, dab dry, put something aside for garnishing.
Pluck the remaining basil leaves from the stems, chop them coarsely and stir them into the yoghurt. Mix pasta, zucchini and yoghurt sauce. Season again with salt and pepper. Arrange noodle salad in a bowl and garnish with basil.