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;)