ET MALWARE Mermaid Ransomware Variant CnC Activity M3

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Mermaid Ransomware Variant CnC Activity M3";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri; bsize:>60;
    content:".php?";
    content:"=ID:_"; distance:0;
    content:"___Key|3a|___"; distance:0; fast_pattern;
    http.header_names; bsize:22;
    content:"|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|";
    classtype:command-and-control;
    sid:2029321; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_01_24, deployment Perimeter, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_01_24, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;
)