alert udp $HOME_NET any -> $EXTERNAL_NET 443 (msg:"ET MALWARE Suspected DinodasRAT Related Activity (UDP)"; dsize:52; content:"|00 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 04 00 00 00|"; distance:4; within:20; content:"|00 00 00 00 50 00 04 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00|"; fast_pattern; endswith; reference:md5,a7c2e87e9f947afdfe9e6a18f5e7c17b; reference:md5,f1cf940f9e64edbd21f30249926c7e03; reference:md5,8138f1af1dc51cde924aa2360f12d650; reference:url,securelist.com/dinodasrat-linux-implant/112284/; classtype:trojan-activity; sid:2051839; rev:1; metadata:attack_target Client_Endpoint, tls_state TLSEncrypt, created_at 2024_03_28, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_28; target:src_ip;)