alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MALWARE APT28/Sofacy Zebrocy Go Variant Checkin";
flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:".php"; endswith;
http.user_agent;
content:"Go-http-client/"; depth:15;
http.request_body;
content:"project=%3C%230%3E"; depth:18; fast_pattern;
http.header_names;
content:!"Referer";
reference:url,unit42.paloaltonetworks.com/sofacy-creates-new-go-variant-of-zebrocy-tool;
reference:md5,400a162a9e5946be10b9fd7155a9ee48;
classtype:targeted-activity;
sid:2026755; rev:3;
metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_01_03, deployment Perimeter, malware_family Zebrocy, performance_impact Moderate, confidence High, signature_severity Major, updated_at 2020_09_16;
)