alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED WinGo/Go-rod signInUrls Failed Data Exfiltration attempt"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/new"; bsize:4; http.user_agent; content:"Go-http-client"; startswith; http.request_body; content:"signInUrls"; fast_pattern; reference:md5,e3adc4d6881c16affd4fc0239a79c9b7; classtype:trojan-activity; sid:2039105; rev:2; metadata:attack_target Client_Endpoint, created_at 2022_10_06, deployment Perimeter, former_category MALWARE, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_18, reviewed_at 2024_09_18;)