ET MALWARE CN Based APT Related Activity (POST)

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE CN Based APT Related Activity (POST)";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/News/"; startswith; fast_pattern;
    content:".html"; endswith;
    http.header_names;
    content:!"Referer";
    http.request_body;
    content:"|21|"; endswith;
    http.user_agent;
    content:!"Linux";
    reference:md5,00079dbf1d25e1d592709e5f895ff5b7;
    reference:url,twitter.com/nao_sec/status/1539246761067573249;
    reference:url,www.sentinelone.com/labs/targets-of-interest-russian-organizations-increasingly-under-attack-by-chinese-apts/;
    classtype:trojan-activity;
    sid:2037076; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_06_22, deployment Perimeter, malware_family TontoTeam, malware_family TA459, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_06_22, reviewed_at 2023_10_11;
)