alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MALWARE Glupteba CnC Checkin";
flow:established,to_server;
http.method;
content:"POST";
http.user_agent;
content:"Go-http-client/"; nocase;
http.content_type;
content:"application/json"; bsize:16;
http.request_body;
content:"{|22|ip|22 3a 22|"; startswith;
content:",|22|comment|22 3a 22|Opened "; fast_pattern; distance:0;
content:"|22|,|22|status|22 3a|"; distance:0;
reference:url,news.sophos.com/wp-content/uploads/2020/06/glupteba_final-1.pdf;
reference:md5,ae353f4c6558996e3abc9c016dd86e2c;
classtype:command-and-control;
sid:2030437; rev:1;
metadata:attack_target Client_Endpoint, created_at 2020_07_01, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_07_01;
)