alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32.Pony Variant FOX Checkin"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; http.request_body; content:"os_version="; depth:11; fast_pattern; content:"os_version_full="; distance:0; content:"processorId="; distance:0; http.header_names; content:!"Referer|0d 0a|"; reference:md5,190c607ef81fa0c27fb1313df5f05266; reference:url,malware.dontneedcoffee.com/2016/09/fox-stealer-another-pony-fork.html; classtype:command-and-control; sid:2023292; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2016_08_10, deployment Perimeter, malware_family Pony, performance_impact Low, signature_severity Major, updated_at 2020_07_27;)