my %hash;
 
while (<FILE>){
 
 next unless /Something/;
 if (/<LONG REGEX>/){
 
   if ($hash{$3}){
     $hash{$3}{count}++;
     next;
   }

   $hash{$3} = {
        sig => $1,
        src => $3,
        proto => $2,
        dst => $4,
        port => $5,
   };
 }
}