/usr/share/dbus-1/services/org.gnome.KrbAuthDialog.service is in krb5-auth-dialog 3.26.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | [D-BUS Service]
Name=org.gnome.KrbAuthDialog
Exec=/usr/bin/krb5-auth-dialog
|