ET MALWARE Lazarus Group Backdoor CnC Checkin M1

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Lazarus Group Backdoor CnC Checkin M1";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/index.php";
    http.content_len;
    byte_test:0,=,41,0,string,dec;
    http.request_body;
    content:"sep|3d|"; startswith; fast_pattern;
    content:"uid|3d|";
    pcre:"/^[a-f0-9]{8}/R";
    content:"sid|3d|";
    pcre:"/^\d{8}/R";
    reference:md5,3c2aa3687ac9f466ce909e2cb12b07a5;
    reference:url,www.verfassungsschutz.de/SharedDocs/publikationen/DE/cyberabwehr/2024-02-19-joint-cyber-security-advisory-englisch.pdf?__blob=publicationFile&v=2;
    classtype:trojan-activity;
    sid:2051005; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_and_Server, tls_state plaintext, created_at 2024_02_21, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_02_21;
    target:src_ip;
)