alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Putter Panda 3PARA RAT initial beacon"; flow:established,to_server; content:"|c4 65 f1 b3 cf a5 7e e2 c0 1a d4 7f 78 46 26 b5 86 15 f9 34 9c 3d 67 84 6a 48 aa df dc 30 60 24|"; depth:2000; reference:url,resources.crowdstrike.com/putterpanda/; classtype:trojan-activity; sid:2018555; rev:2; metadata:attack_target Client_Endpoint, created_at 2014_06_11, 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;)