/usr/share/modsecurity-crs/util/regexp-assemble/ is in modsecurity-crs 3.0.2-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/modsecurity-crs/util/regexp-assemble/regexp-932100.txt
/usr/share/modsecurity-crs/util/regexp-assemble/regexp-932105.txt
/usr/share/modsecurity-crs/util/regexp-assemble/regexp-932110.txt
/usr/share/modsecurity-crs/util/regexp-assemble/regexp-932115.txt
/usr/share/modsecurity-crs/util/regexp-assemble/regexp-932130.data
/usr/share/modsecurity-crs/util/regexp-assemble/regexp-932140.data
/usr/share/modsecurity-crs/util/regexp-assemble/regexp-932150.txt
/usr/share/modsecurity-crs/util/regexp-assemble/regexp-933131.data
/usr/share/modsecurity-crs/util/regexp-assemble/regexp-933160.data
/usr/share/modsecurity-crs/util/regexp-assemble/regexp-933161.data
/usr/share/modsecurity-crs/util/regexp-assemble/regexp-assemble.pl
/usr/share/modsecurity-crs/util/regexp-assemble/regexp-cmdline.py