alert tcp-pkt $EXTERNAL_NET 1024: -> $HOME_NET any (msg:"ET DELETED Win32/XWorm CnC Activity (Inbound)"; dsize:88; content:"|00 00 00 54 00 00 00|"; startswith; threshold:type limit, seconds 300, count 1, track by_src; reference:md5,4c9ac983680613f3b46cb2144a89ec8f; classtype:command-and-control; sid:2062712; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2025_06_02, deployment Perimeter, malware_family Xworm, performance_impact Low, confidence High, signature_severity Critical, updated_at 2025_06_04, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1573, mitre_technique_name Encrypted_Channel;)