alert dns any any -> any any (msg:"🐾 - ☠ DNS request 🌐 - 🎛 C2 🐀 AsyncRAT"; dns_query; flow:to_server, stateless; content:"julian.linkpc.net"; nocase; reference:url,https://twitter.com/hexfati/status/1281490222618939392; reference:url,https://github.com/NYAN-x-CAT/AsyncRAT-C-Sharp/; reference:url,https://malpedia.caad.fkie.fraunhofer.de/details/win.asyncrat; metadata:created_at 2020_07_10, updated_at 2020_07_10; sid:3301624; rev:1; classtype:trojan-activity;)