alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MALWARE IXWARE Stealer CnC Activity";
flow:established,to_server;
http.request_body;
content:"checkAcc="; startswith;
http.content_type; bsize:33;
content:"application/x-www-form-urlencoded";
http.start;
content:"POST /stubCheck HTTP/"; depth:21; fast_pattern;
reference:url,twitter.com/James_inthe_box/status/1248010996502769664;
classtype:command-and-control;
sid:2030098; rev:2;
metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_05_04, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_17;
)