alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Evrial Stealer CnC Activity"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/upload.php?user="; fast_pattern; content:"&hwid="; distance:0; http.request_body; content:"Content-Disposition|3a 20|form-data|3b 20|name=|22|file|22 3b 20|filename=|22|"; http.header_names; content:!"Referer"; content:!"Accept"; reference:md5,485069677e997ff6ce193be7258c783f; classtype:command-and-control; sid:2025266; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_01_30, deployment Perimeter, malware_family Evrial, performance_impact Moderate, confidence High, signature_severity Major, updated_at 2020_08_24;)