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;)