alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/SVCReady Loader CnC Activity M2"; flow:established,to_server; http.method; content:"POST"; http.header_names; content:"|0d 0a|g|0d 0a|"; content:"|0d 0a|pr|0d 0a|"; content:"|0d 0a|sg|0d 0a|"; fast_pattern; http.header; pcre:"/^g\x3a\x20[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}[\r\n]+$/m"; pcre:"/^sg\x3a\x20[A-F0-9]{8}-[A-F0-9]{4}-[A-F0-9]{4}-[A-F0-9]{4}-[A-F0-9]{12}[\r\n]+$/m"; reference:md5,e6b33ddaa9583216013b112b00317d0a; classtype:command-and-control; sid:2036863; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_05_12, deployment Perimeter, malware_family SVCReady, confidence High, signature_severity Major, tag c2, updated_at 2022_05_12, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)