alert tcp-pkt $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE zgRAT Activity M2"; flow:established,to_server; flowbits:isset,ET.zgRAT; content:"|2b 00 00 00 1f 8b 08 00 00 00 00 00 04 00 33 b6 51 51 b5 b7|"; depth:20; isdataat:!45,relative; reference:md5,43a2f0f6fb1b858e9d7997ba8317df03; reference:url,twitter.com/James_inthe_box/status/1410260077861249028; classtype:command-and-control; sid:2033212; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_06_30, deployment Perimeter, confidence High, signature_severity Major, tag RAT, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_06_30;)