alert udp $HOME_NET any -> $EXTERNAL_NET !53 (msg:"ET MALWARE PlugX UDP CnC Beacon"; dsize:36; content:"|00 00 50 00 02 00 00 00 00 04 00 00 00 10 00 00 00 00 00 00|"; depth:20; content:!"|00 00|"; within:2; content:"|00 00 00 00 00 00 00 00 00 00 00 00 00|"; distance:3; within:13; reference:md5,2c65085e7c71fa2c02c9b65e9b747e5b; reference:url,trendmicro.com/cloud-content/us/pdfs/security-intelligence/white-papers/wp-operation-iron-tiger.pdf; classtype:command-and-control; sid:2021791; rev:1; metadata:attack_target Client_Endpoint, created_at 2015_09_17, deployment Perimeter, confidence High, signature_severity Major, tag c2, updated_at 2019_07_26, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)