ET MALWARE Win32/BLUELIGHT OAuth Login Attempt M2

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/BLUELIGHT OAuth Login Attempt M2";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/oauth20_token.srf"; bsize:18; nocase;
    http.user_agent;
    content:"Myapp"; fast_pattern;
    http.request_body;
    content:"client_id="; startswith;
    content:"&client_secret="; distance:36; within:15;
    content:"&refresh_token="; distance:0;
    http.header_names;
    content:!"|0d 0a|Accept";
    content:!"|0d 0a|Referer|0d 0a|";
    reference:md5,0b649bc5dbbf21801c21aaa5e5f79fc6;
    reference:url,www.volexity.com/blog/2021/08/17/north-korean-apt-inkysquid-infects-victims-using-browser-exploits;
    classtype:trojan-activity;
    sid:2033741; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_08_18, deployment Perimeter, malware_family BLUELIGHT, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_12;
)