/usr/lib/libmono-profiler-iomap.so.0 is in libmono-profiler 3.2.8+dfsg-4ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libmono-profiler-iomap.so.0.0.0
/usr/lib/libmono-profiler-iomap.so.0.0.0