alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Injector.BXEW Variant HTTP CnC Beacon 2"; flow:established,to_server; http.header; content:"Accept|3a 20|*/*,|20|"; content:", MZ"; fast_pattern; pcre:"/^Accept\x3a\x20\*\/\*,[^\r\n]+, MZ/mi"; reference:md5,0ebaf8a6292237b33045f5e81947004b; classtype:command-and-control; sid:2020834; 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_09_29, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)