Agilis is a private passenger operator which is active in Bayern (Bavaria). It is owned by the company BeNEX and by Hamburger Hochbahn, the operator of Hamburg city's metro and bus services. This train is a Coradia Continental electric multiple unit built by Alstom. They are often known by the nickname "mops".
Picture from Ulm 3.7.2019 by Ilkka Siissalo.

Side view of the same Coradia Continental Br440. Agilis has 26 of these trains and uses them especially around the city of Regensburg.
Picture from Ulm 3.7.2019 by Ilkka Siissalo.