/usr/lib/x86_64-linux-gnu/visir-4.3.3/ is in cpl-plugin-visir 4.3.3+dfsg-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/visir-4.3.3/bin/
/usr/lib/x86_64-linux-gnu/visir-4.3.3/bin/swarp
/usr/lib/x86_64-linux-gnu/visir-4.3.3/libvisir.la
/usr/lib/x86_64-linux-gnu/visir-4.3.3/libvisir.so
/usr/lib/x86_64-linux-gnu/visir-4.3.3/libvisir.so.0
/usr/lib/x86_64-linux-gnu/visir-4.3.3/libvisir.so.0.0.0
/usr/lib/x86_64-linux-gnu/visir-4.3.3/share/
/usr/lib/x86_64-linux-gnu/visir-4.3.3/share/man/
/usr/lib/x86_64-linux-gnu/visir-4.3.3/share/man/man1/
/usr/lib/x86_64-linux-gnu/visir-4.3.3/share/man/man1/swarp.1
/usr/lib/x86_64-linux-gnu/visir-4.3.3/share/man/manx/
/usr/lib/x86_64-linux-gnu/visir-4.3.3/share/man/manx/swarp.x
/usr/lib/x86_64-linux-gnu/visir-4.3.3/share/swarp/
/usr/lib/x86_64-linux-gnu/visir-4.3.3/share/swarp/swarp.xsl