alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE DeskRAT CnC Command Inbound (Upload_execute)"; flow:established,to_client; content:"|7b 22|type|22 3a 22|Upload_execute|22 2c 22|"; depth:38; threshold:type limit,count 1,seconds 300,track by_dst; classtype:command-and-control; sid:2066662; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_01_09, deployment Perimeter, deployment SSLDecrypt, malware_family DeskRAT, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_01_09, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel; target:dest_ip;)