/usr/share/perl5/Spreadsheet/WriteExcel/ is in libspreadsheet-writeexcel-perl 2.40-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/Spreadsheet/WriteExcel/BIFFwriter.pm
/usr/share/perl5/Spreadsheet/WriteExcel/Big.pm
/usr/share/perl5/Spreadsheet/WriteExcel/Chart/
/usr/share/perl5/Spreadsheet/WriteExcel/Chart.pm
/usr/share/perl5/Spreadsheet/WriteExcel/Chart/Area.pm
/usr/share/perl5/Spreadsheet/WriteExcel/Chart/Bar.pm
/usr/share/perl5/Spreadsheet/WriteExcel/Chart/Column.pm
/usr/share/perl5/Spreadsheet/WriteExcel/Chart/External.pm
/usr/share/perl5/Spreadsheet/WriteExcel/Chart/Line.pm
/usr/share/perl5/Spreadsheet/WriteExcel/Chart/Pie.pm
/usr/share/perl5/Spreadsheet/WriteExcel/Chart/Scatter.pm
/usr/share/perl5/Spreadsheet/WriteExcel/Chart/Stock.pm
/usr/share/perl5/Spreadsheet/WriteExcel/Examples.pm
/usr/share/perl5/Spreadsheet/WriteExcel/Format.pm
/usr/share/perl5/Spreadsheet/WriteExcel/Formula.pm
/usr/share/perl5/Spreadsheet/WriteExcel/OLEwriter.pm
/usr/share/perl5/Spreadsheet/WriteExcel/Properties.pm
/usr/share/perl5/Spreadsheet/WriteExcel/Utility.pm
/usr/share/perl5/Spreadsheet/WriteExcel/Workbook.pm
/usr/share/perl5/Spreadsheet/WriteExcel/Worksheet.pm