alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET PHISHING Successful TA399/Sidewinder Related Phish 2022-09-28"; flow:to_server,established; http.method; content:"POST"; http.uri; content:"/emaiI.nic.in/"; startswith; content:".php"; endswith; http.request_body; content:"loginOp="; nocase; startswith; fast_pattern; content:"&username="; nocase; distance:0; content:"&password="; nocase; distance:0; content:"&client="; nocase; distance:0; classtype:social-engineering; sid:2039017; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_09_28, deployment Perimeter, malware_family Sidewinder, confidence Medium, signature_severity Critical, tag Phishing, tag TA399, updated_at 2022_09_28, reviewed_at 2024_05_07, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing;)