alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET PHISHING HiYu - Request for Victim Enrichment"; flow:established,to_server; urilen:8; http.method; content:"POST"; http.uri; bsize:8; content:"/api.php"; fast_pattern; http.header; content:"X-Requested-With|3a 20|XMLHttpRequest"; http.content_len; byte_test:0,<,200,0,string,dec; http.request_body; content:"API="; startswith; content:!"&"; distance:0; reference:url,urlscan.io/result/26b88d69-0fea-4c63-9f29-3c53350c098e/; classtype:social-engineering; sid:2044318; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_02_24, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_02_24; target:src_ip;)