alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET JA3 Hash - Suspected Meterpreter Reverse Shell M2 (set)"; flow:established,to_server; ja3.hash; content:"72a589da586844d7f0818ce684948eea"; flowbits:set,ET.meterpreter.ja3; flowbits:noalert; classtype:command-and-control; sid:2028830; rev:2; metadata:attack_target Client_Endpoint, created_at 2019_10_15, deployment Perimeter, malware_family Meterpreter, confidence Low, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_10_15;)