alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED Win/Malware.Filetour Variant Checkin M2"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/B.php?a="; fast_pattern; content:"&v="; distance:0; content:"&h="; content:"&r="; http.header_names; content:!"Referer"; reference:md5,527c4c13a656923be49ab2ff4c6738c0; classtype:bad-unknown; sid:2036672; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_05_24, deployment Perimeter, former_category ADWARE_PUP, malware_family Win_Malware_Filetour, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_16, reviewed_at 2024_09_16;)