/usr/lib/nanoweb/ is in nanoweb 2.2.9-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/nanoweb/modules/
/usr/lib/nanoweb/modules/mod_ac.php
/usr/lib/nanoweb/modules/mod_access_rbl.php
/usr/lib/nanoweb/modules/mod_access_referer.php
/usr/lib/nanoweb/modules/mod_asis.php
/usr/lib/nanoweb/modules/mod_auth_anonymous.php
/usr/lib/nanoweb/modules/mod_auth_anydb.php
/usr/lib/nanoweb/modules/mod_auth_htpasswd.php
/usr/lib/nanoweb/modules/mod_auth_ldap.php
/usr/lib/nanoweb/modules/mod_auth_mysql.php
/usr/lib/nanoweb/modules/mod_auth_nwauth.php
/usr/lib/nanoweb/modules/mod_auth_pgsql.php
/usr/lib/nanoweb/modules/mod_auth_simple.php
/usr/lib/nanoweb/modules/mod_auth_subversion.php
/usr/lib/nanoweb/modules/mod_blockadm.php
/usr/lib/nanoweb/modules/mod_bsp.php
/usr/lib/nanoweb/modules/mod_cgi.php
/usr/lib/nanoweb/modules/mod_debug.php
/usr/lib/nanoweb/modules/mod_digest.php
/usr/lib/nanoweb/modules/mod_dosevasive.php
/usr/lib/nanoweb/modules/mod_emailprotect.php
/usr/lib/nanoweb/modules/mod_fb.php
/usr/lib/nanoweb/modules/mod_fcgi.php
/usr/lib/nanoweb/modules/mod_gzip.php
/usr/lib/nanoweb/modules/mod_html_filters.php
/usr/lib/nanoweb/modules/mod_img_filters.php
/usr/lib/nanoweb/modules/mod_include.php
/usr/lib/nanoweb/modules/mod_libphp.php
/usr/lib/nanoweb/modules/mod_lnk.php
/usr/lib/nanoweb/modules/mod_load_limit.php
/usr/lib/nanoweb/modules/mod_meta.php
/usr/lib/nanoweb/modules/mod_method_PUT.php
/usr/lib/nanoweb/modules/mod_method_TRACE.php
/usr/lib/nanoweb/modules/mod_method_handler.php
/usr/lib/nanoweb/modules/mod_misc_filters.php
/usr/lib/nanoweb/modules/mod_mispell.php
/usr/lib/nanoweb/modules/mod_msff.php
/usr/lib/nanoweb/modules/mod_multiviews.php
/usr/lib/nanoweb/modules/mod_mysqllog.php
/usr/lib/nanoweb/modules/mod_nospam.php
/usr/lib/nanoweb/modules/mod_pfilters.php
/usr/lib/nanoweb/modules/mod_proxy.php
/usr/lib/nanoweb/modules/mod_rewrite.php
/usr/lib/nanoweb/modules/mod_static.php
/usr/lib/nanoweb/modules/mod_status.php
/usr/lib/nanoweb/modules/mod_stdlog.php
/usr/lib/nanoweb/modules/mod_throttle.php
/usr/lib/nanoweb/modules/mod_unzip.php
/usr/lib/nanoweb/modules/mod_worms.php