/usr/share/kservices5/ is in kio-extras-data 4:17.12.3-0ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/kservices5/about.protocol
/usr/share/kservices5/activities.protocol
/usr/share/kservices5/ar.protocol
/usr/share/kservices5/audiothumbnail.desktop
/usr/share/kservices5/bookmarks.protocol
/usr/share/kservices5/bzip.protocol
/usr/share/kservices5/bzip2.protocol
/usr/share/kservices5/comicbookthumbnail.desktop
/usr/share/kservices5/directorythumbnail.desktop
/usr/share/kservices5/djvuthumbnail.desktop
/usr/share/kservices5/exrthumbnail.desktop
/usr/share/kservices5/filenamesearch.protocol
/usr/share/kservices5/fish.protocol
/usr/share/kservices5/gzip.protocol
/usr/share/kservices5/htmlthumbnail.desktop
/usr/share/kservices5/imagethumbnail.desktop
/usr/share/kservices5/info.protocol
/usr/share/kservices5/jpegthumbnail.desktop
/usr/share/kservices5/kactivitymanagerd_fileitem_linking_plugin.desktop
/usr/share/kservices5/kmanpart.desktop
/usr/share/kservices5/kraorathumbnail.desktop
/usr/share/kservices5/lzma.protocol
/usr/share/kservices5/man.protocol
/usr/share/kservices5/mtp.protocol
/usr/share/kservices5/network.protocol
/usr/share/kservices5/nfs.protocol
/usr/share/kservices5/recentdocuments.protocol
/usr/share/kservices5/settings.protocol
/usr/share/kservices5/sftp.protocol
/usr/share/kservices5/smb.protocol
/usr/share/kservices5/svgthumbnail.desktop
/usr/share/kservices5/tar.protocol
/usr/share/kservices5/textthumbnail.desktop
/usr/share/kservices5/thumbnail.protocol
/usr/share/kservices5/windowsexethumbnail.desktop
/usr/share/kservices5/windowsimagethumbnail.desktop
/usr/share/kservices5/xz.protocol
/usr/share/kservices5/zip.protocol