alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE AsyncRAT CnC Domain in TLS SNI (ga1yo3wu78v48hh .top)"; flow:established,to_server; tls.sni; bsize:19; content:"ga1yo3wu78v48hh.top"; fast_pattern; reference:url,malpedia.caad.fkie.fraunhofer.de/details/win.asyncrat; reference:url,trac-labs.com/dont-ghost-the-socgholish-ghostweaver-backdoor-574154dd9983; reference:url,www.huntress.com/blog/fake-browser-updates-lead-to-boinc-volunteer-computing-software; classtype:domain-c2; sid:2060654; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2025_03_06, deployment Perimeter, malware_family AsyncRAT, performance_impact Low, confidence High, signature_severity Major, tag ta569, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_03_06;)