Well . . .

• opendir and readdir for getting lists of filenames (or glob; alternately you may want File::Find or File::Find::Rule if you need to search a hierarchy but this sounds like a single flat directory)
• mkdir to make a directory (or possibly mkpath from File::Path)
• File::Copy for move (or do it yourself with rename)
• or use copy from the same module and then unlink instead of moving