alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE NanoCore RAT CnC 23"; flow:established,to_server; dsize:12; content:"|48 00 00 00 78 ff 61 48 03 b2 91 94|"; depth:12; reference:md5,448a2794f42158d1a23fa6952ccb6eab; reference:url,medium.com/@the_abjuri5t/nanocore-rat-hunting-guide-cb185473c1e0; classtype:command-and-control; sid:2046919; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_06_13, deployment Perimeter, confidence High, signature_severity Major, tag Nanocore, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_07_26, former_sid 2831256;)