alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MALWARE PhantomPulse RAT CnC Checkin Attempt";
flow:established,to_server;
http.method;
content:"POST";
http.uri; bsize:>17;
content:"/telemetry/report";
http.content_type; bsize:16;
content:"application/json";
http.request_body;
content:"|22|machine_id|22 3a|"; fast_pattern;
pcre:"/^\d{10}/R";
content:"|22|status|22 3a 22|online|22|";
content:"|22|cpu|22 3a 22|";
content:"|22|gpu|22 3a 22|";
content:"|22|ram_mb|22 3a|";
content:"|22|os|22 3a 22|Windows|20|";
content:"|22|username|22 3a 22|";
content:"|22|computer_name|22 3a 22|";
content:"|22|cores|22 3a|";
content:"|22|screen_w|22 3a|";
content:"|22|screen_h|22 3a|";
content:"|22|privilege|22 3a 22|";
content:"|22|build|22 3a|";
content:"|22|public_ip|22 3a 22|";
reference:url,www.elastic.co/security-labs/phantom-in-the-vault;
classtype:trojan-activity;
sid:2069050; rev:1;
metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_04_28, deployment Perimeter, deployment SSLDecrypt, malware_family PhantomPulse_RAT, performance_impact Low, confidence High, signature_severity Major, tag RAT, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_04_28;
target:src_ip;
)