ET MALWARE ICEFOG-P Variant CnC Checkin M1

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE ICEFOG-P Variant CnC Checkin M1";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".jpg";
    pcre:"/_[A-F0-9]{12}\.jpg$/i";
    http.request_body;
    content:"H|00|O|00|S|00|T|00 20 00|N|00|A|00|M|00|E|00 3a|"; depth:19; fast_pattern;
    reference:url,speakerdeck.com/ashley920/into-the-fog-the-return-of-icefog-apt;
    classtype:command-and-control;
    sid:2027431; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, created_at 2019_06_04, deployment Perimeter, malware_family ICEFOG_P, performance_impact Low, confidence High, signature_severity Major, tag APT, tag IceFog, updated_at 2020_08_31;
)