Find Queries with huge Result-Set

Hello,

we are using MariaDB as DB for our CMS. Lately I noticed a massive growth in Traffic between our HTTP <--> DB Server. Normally we got about 10MBit/s but since a few Days it's over 100MBit/s ... My first guess would be a Query which delivers a really huge Result-Set back to the HTTP Server - but I'm unable to find out which Query this could be (hundreds of Queries / Second) Already searched hours for an Answer - but no luck so far ... so I hope someone here can help me finding the Bogus Query ... ;-)

Thank you, bye from sunny Austria Andreas Schnederle-Wagner