alert tcp-pkt $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE [ANY.RUN] Win32/Gh0stRat Keep-Alive"; flow:established,to_client; dsize:<56; content:"|00 00 00 01 00 00 00 78 9c|"; depth:24; isdataat:!56; reference:md5,0d5e3beb1a973c68180cdc7b4c9be36b; reference:url,app.any.run/tasks/bff76d98-1ed4-4503-a21b-7735bb0b7907; reference:url,community.emergingthreats.net/t/gh0strat/1017; classtype:trojan-activity; sid:2048478; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_10_06, deployment Perimeter, malware_family Win32_Gh0stRat, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_12_28, reviewed_at 2023_10_06; target:dest_ip;)