alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET PHISHING Successful Ionos Credential Phish 2023-02-28"; flow:established,to_server; http.request_line; content:"POST|20|/communication/communication/pass_error.php|20|"; startswith; fast_pattern; http.request_body; content:"email="; startswith; content:"&password="; distance:0; content:"&submit="; distance:0; reference:md5,10963f48a4c55a815db76313daba45ca; classtype:trojan-activity; sid:2044411; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_02_28, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_02_28;)