ET PHISHING Successful Survey Credential Phish M3 2022-04-04

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET PHISHING Successful Survey Credential Phish M3 2022-04-04";
    flow:established,to_server;
    http.request_line;
    content:"POST /survey/survey"; startswith; fast_pattern;
    http.referer;
    content:"/survey";
    content:"/source="; distance:0;
    content:"/subid="; distance:0;
    content:"/nrp="; distance:0;
    http.request_body;
    content:"method=SetServerPixel&survey=";
    content:"&campaign="; distance:0;
    content:"&tracking_id=";
    content:"&token="; distance:0;
    content:"&nrp="; distance:0;
    pcre:"/nrp=[a-f0-9]{32}/";
    content:"&returnedClient="; distance:0;
    classtype:credential-theft;
    sid:2036471; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_05_04, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_05_05;
)