alert http1 $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE MegalodonHTTP/LuciferHTTP/Gomorrah Client Action M2"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".php?hwid="; fast_pattern; pcre:"/^[A-Z0-9]{18}$/R"; http.header_names; bsize:10; content:"|0d 0a|Host|0d 0a 0d 0a|"; reference:md5,ad9d3caa8843e88c32c4a1168a3ae422; reference:md5,d543973bd33d45d515e8dfc251411c4b; classtype:trojan-activity; sid:2036964; rev:3; metadata:attack_target Client_Endpoint, created_at 2022_06_13, deployment Perimeter, malware_family Gomorrah, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_03;)