[CHECKPOINT] Action Open Shell

alert any $EXTERNAL_NET any -> $HOME_NET any (msg:"[CHECKPOINT] Action Open Shell"; content: "[action
| 3a 22
| Open Shell
| 22 3b
| "; parse_dst_ip: 1; parse_src_ip: 3; parse_proto; classtype: suspicious-traffic; sid:5005716; rev:1;)