ET MALWARE Matanbuchus Loader CnC M3

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Matanbuchus Loader CnC M3";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php"; endswith;
    http.content_type;
    content:"application/x-www-form-urlencoded"; bsize:33;
    http.request_body;
    content:!"&";
    content:"=ey"; depth:13; fast_pattern;
    pcre:"/^[IJKL].*(?:PT0iLC|09Iiwi|9PSIsI)[a-zA-Z0-9+\/]+(?:PT0iLC|09Iiwi|9PSIsI)/R";
    http.header_names;
    content:!"Referer";
    threshold:type limit, track by_src, count 1, seconds 120;
    reference:url,twitter.com/fr0s7_/status/1458823504925798408;
    classtype:command-and-control;
    sid:2034468; rev:3;
    metadata:attack_target Client_Endpoint, created_at 2021_11_16, deployment Perimeter, confidence High, signature_severity Major, updated_at 2021_11_18, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)