alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32/Syndicasec.Backdoor CnC Beacon"; flow:established,to_server; http.method; content:"POST"; http.request_body; content:"cstype="; depth:7; content:"&authname="; distance:0; content:"&hostname="; distance:0; content:"&ostype="; distance:0; content:"&owner="; distance:0; reference:url,blogs.mcafee.com/mcafee-labs/operation-mangal-win32syndicasec-used-targeted-attacks-indian-organizations; classtype:command-and-control; sid:2019831; rev:5; metadata:attack_target Client_Endpoint, created_at 2014_12_01, deployment Perimeter, signature_severity Major, tag c2, updated_at 2020_06_24, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)