ET CURRENT_EVENTS [Fireeye] Backdoor.HTTP.BEACON.[CSBundle NYTIMES GET]

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET CURRENT_EVENTS [Fireeye] Backdoor.HTTP.BEACON.[CSBundle NYTIMES GET]";
    flow:established,to_server;
    content:"nyt-a=";
    content:"nyt-gdpr=0|3b|nyt-purr=cfh|3b|nyt-geo=US}"; fast_pattern;
    http.method;
    content:"GET";
    http.accept;
    content:"*/*"; depth:3;
    http.accept_enc;
    content:"gzip, deflate, br"; depth:17;
    http.accept_lang;
    content:"en-US,en|3b|q=0.5"; startswith;
    http.request_line;
    pcre:"/^GET\s(?:\/(?:(?:v(?:i-assets\/static-asset|[12]\/preference)|idcta\/translation)s|ads\/google))/";
    reference:url,github.com/fireeye/red_team_tool_countermeasures;
    classtype:trojan-activity;
    sid:2031276; rev:3;
    metadata:attack_target Client_Endpoint, created_at 2020_12_08, deployment Perimeter, confidence High, signature_severity Major, tag c2, updated_at 2020_12_09, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)