alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET PHISHING Possible Successful Generic Phish (set) Feb 26 2016"; flow:established,to_server; flowbits:set,ET.genericphish; flowbits:noalert; http.method; content:"POST"; http.request_body; content:"user"; nocase; pcre:!"/^agent/PRi"; content:"pass"; nocase; fast_pattern; http.user_agent; content:!"cpp-httplib"; startswith; http.referer; content:!"https://www.instagram.com/accounts/login/"; content:!"law.wkinfo.com.cn"; classtype:credential-theft; sid:2024555; rev:11; metadata:attack_target Client_Endpoint, created_at 2016_01_14, deployment Perimeter, confidence Medium, signature_severity Critical, tag Phishing, updated_at 2026_02_16, reviewed_at 2024_04_23, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)