I don't use MS Windows so can't judge the effectiveness of your script. This is just a comment on a couple of lines of your code.
my $paths = join "\0", @_;
$paths .= "\0\0";
They could be condensed into one statement.
my $paths = join "\0", @_, "\0";
An example
johngg@aleatico:~$ perl -Mstrict -Mwarnings -E '
my @p = qw{ a b c };
my $p = join "\0", @p, "\0";
print $p;' | hexdump -C
00000000 61 00 62 00 63 00 00 |a.b.c..|
00000007
I hope this is of interest.
Update: Corrected typo slash to backslash, thanks to all who pointed it out.
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