alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/SVCReady Loader Requesting Payload"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php?zs="; content:"&t="; isdataat:!2,relative; http.request_body; content:"Downloading|20|file|20|"; startswith; nocase; fast_pattern; http.header_names; content:!"Referer"; content:!"Accept-"; reference:md5,e4430c33d343d9f4af57225b90600a3d; reference:md5,1036e57d1c8cde25a6680430354aa801; classtype:trojan-activity; sid:2036857; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_10_27, deployment Perimeter, malware_family SVCReady, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_10_27;)