alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Gamaredon CnC Activity (POST) M3"; flow:established,to_server; urilen:27; http.method; content:"POST"; http.uri; content:"/intention"; startswith; fast_pattern; pcre:"/^(?P<ID>[0-9]{2})\x2findex\x2ehtml\x3d\x3f(?P=ID)$/R"; http.host; pcre:"/^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/"; http.header_names; content:!"Referer"; reference:md5,4924a85d0c77c9b7b38faaab94636d9a; reference:url,twitter.com/StopMalvertisin/status/1645771054462402560; classtype:trojan-activity; sid:2044918; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_04_11, deployment Perimeter, malware_family Win32_Gamaredon, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_04_11;)