/usr/share/zentyal/stubs/users/ is in zentyal-users 2.3.4.
This file is owned by root:root, with mode 0o755.
..
/usr/share/zentyal/stubs/users/acc-ebox.mas
/usr/share/zentyal/stubs/users/ldap-slave.conf.mas
/usr/share/zentyal/stubs/users/ldap.conf.mas
/usr/share/zentyal/stubs/users/slapd-frontend-referrals.ldif.mas
/usr/share/zentyal/stubs/users/slapd-frontend.ldif.mas
/usr/share/zentyal/stubs/users/slapd-master-db.ldif.mas
/usr/share/zentyal/stubs/users/slapd-master-upgrade-ebox.ldif.mas
/usr/share/zentyal/stubs/users/slapd-master-upgrade.ldif.mas
/usr/share/zentyal/stubs/users/slapd-master.ldif.mas
/usr/share/zentyal/stubs/users/slapd-replica.ldif.mas
/usr/share/zentyal/stubs/users/slapd-translucent.ldif.mas
/usr/share/zentyal/stubs/users/soap-slave.mas
/usr/share/zentyal/stubs/users/zentyal-users.cron.mas