ET PHISHING Successful Docusign Phish M1 2016-08-17

alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET PHISHING Successful Docusign Phish M1 2016-08-17";
    flow:established,from_server;
    http.stat_code;
    content:"200";
    http.content_type;
    content:"text/html"; startswith;
    file.data;
    content:"<meta HTTP-EQUIV="; nocase;
    content:"refresh"; nocase; distance:1; within:8;
    content:"<title>Error"; nocase; fast_pattern; distance:0;
    content:"MM_preloadImages"; nocase; distance:0;
    content:"Try Again"; nocase; distance:0;
    content:"This page will redirect"; nocase; distance:0;
    classtype:credential-theft;
    sid:2032043; rev:3;
    metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2016_08_17, deployment Perimeter, confidence Medium, signature_severity Critical, tag Phishing, updated_at 2020_07_27, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;
)