/usr/lib/x86_64-linux-gnu/libasn1c.so is in osmo-libasn1c-dev 0.9.28-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libasn1c.so.0.0.0
/usr/lib/x86_64-linux-gnu/libasn1c.so.0.0.0