alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Injector.BXEW Variant HTTP CnC Beacon 1"; flow:established,to_server; http.header; content:"Referer|3a 20|HTTP/1.0|0d 0a|"; depth:19; fast_pattern; http.header_names; content:!"Accept-"; reference:md5,0ebaf8a6292237b33045f5e81947004b; classtype:command-and-control; sid:2020833; rev:4; metadata:attack_target Client_Endpoint, created_at 2015_04_02, deployment Perimeter, malware_family Win32_Injector_BXEW, signature_severity Major, tag c2, updated_at 2020_05_21, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)