/usr/lib/libmstoolkitlite.so.77 is in libmstoolkit77 77.0.0-1+b3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libmstoolkitlite.so.77.0.0
/usr/lib/libmstoolkitlite.so.77.0.0