alert udp $HOME_NET any -> $EXTERNAL_NET 1024: (msg:"ET MALWARE Win32/WinDealer CnC Activity (Checkin)"; dsize:<200; content:"|06 81 da 91 ce c7 9f 43|"; startswith; fast_pattern; content:"|14 00|"; distance:4; within:4; reference:url,blogs.jpcert.or.jp/en/2021/10/windealer.html; reference:md5,5a7a90ceb6e7137c753d8de226fc7947; classtype:trojan-activity; sid:2034254; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_10_26, deployment Perimeter, malware_family Win32_WinDealer, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_10_26;)