alert udp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Denisca.A CnC Beacon 2"; dsize:37; content:"|2a 26|"; depth:2; content:"|26 5e|"; distance:22; fast_pattern; reference:md5,aaa4304dd5f22a017930a9eeebc8898f; classtype:command-and-control; sid:2021389; rev:1; metadata:attack_target Client_Endpoint, created_at 2015_07_07, deployment Perimeter, malware_family Win32_Denisca_A, 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;)