alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED WinGo/YT Stealer CnC Checkin"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/new"; bsize:4; http.user_agent; content:"Go-http-client/"; startswith; http.header_names; content:!"Referer"; http.request_body; content:"|7b 22|author|22 3b 22|"; fast_pattern; startswith; content:"|2c 22|ip|22 3b 22|"; distance:0; content:"|2c 22|text|22 3b 22|"; distance:0; reference:md5,96ec3efa9bd454550b615df142b08295; classtype:trojan-activity; sid:2039441; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_10_18, deployment Perimeter, deployment SSLDecrypt, former_category MALWARE, malware_family YT_Stealer, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_19, reviewed_at 2024_09_19;)