/usr/share/plum/module/ctcp/ is in plum 2.33.1-10.
This file is owned by root:root, with mode 0o755.
..
/usr/share/plum/module/ctcp/clientinfo.plm
/usr/share/plum/module/ctcp/comment.plm
/usr/share/plum/module/ctcp/dcc/
/usr/share/plum/module/ctcp/dcc/cancel.plm
/usr/share/plum/module/ctcp/dcc/client.plm
/usr/share/plum/module/ctcp/dcc/forward.plm
/usr/share/plum/module/ctcp/dcc/gate.plm
/usr/share/plum/module/ctcp/dcc/get.plm
/usr/share/plum/module/ctcp/dcc/http.plm
/usr/share/plum/module/ctcp/dcc/nat.plm
/usr/share/plum/module/ctcp/dcc/send.plm
/usr/share/plum/module/ctcp/echo.plm
/usr/share/plum/module/ctcp/finger.plm
/usr/share/plum/module/ctcp/part.plm
/usr/share/plum/module/ctcp/ping.plm
/usr/share/plum/module/ctcp/time.plm
/usr/share/plum/module/ctcp/userinfo.plm
/usr/share/plum/module/ctcp/version.plm