Package: apache2-bin Version: 2.4.10-10 In Wheezy 7.8 mod_imagemap was shipped with the apache2.2-bin package ( https://packages.debian.org/wheezy/amd64/apache2.2-bin/filelist). It appears that in the new stable system, apache2.4-bin is missing mod_imagemap (https://packages.debian.org/jessie/amd64/apache2-bin/filelist). I'm not aware of the module being renamed.
Additionally the module is not available for install via a standalone package.