alert tcp $HOME_NET any -> $EXTERNAL_NET [80,443] (msg:"ET MALWARE Hong Kong SWC Attack PcClient CnC Beacon"; flow:established,to_server; content:"|BB 4E 4E BC BC BC 7E 7E|"; nocase; offset:160; depth:8; reference:url,blog.dragonthreatlabs.com/2015/01/dtl-12012015-01-hong-kong-swc-attack.html; classtype:command-and-control; sid:2020169; rev:1; metadata:attack_target Client_Endpoint, created_at 2015_01_13, deployment Perimeter, confidence Medium, 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;)