ET MALWARE Lyceum Golang HTTP Backdoor CnC Checkin

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Lyceum Golang HTTP Backdoor CnC Checkin";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:".php"; endswith;
    http.user_agent;
    content:"Go-http-client/";
    http.header;
    content:"auth_token=|22|XXXXXXX|22|"; fast_pattern;
    http.request_body;
    content:"details=";
    content:"&news=";
    reference:url,research.checkpoint.com/2022/state-sponsored-attack-groups-capitalise-on-russia-ukraine-war-for-cyber-espionage/;
    classtype:trojan-activity;
    sid:2035958; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_04_14, deployment Perimeter, confidence High, signature_severity Major, tag Backdoor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_04_14;
)