alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE NanoCore RAT CnC 26"; flow:established,to_server; content:"|48 00 00 00 17 62 8a 1e 80 93 74 f0|"; depth:12; reference:md5,18fe62a701d08affdd58ade2df0d1fb6; reference:url,medium.com/@the_abjuri5t/nanocore-rat-hunting-guide-cb185473c1e0; classtype:command-and-control; sid:2046916; rev:3; metadata:attack_target Client_Endpoint, created_at 2019_01_16, deployment Perimeter, deprecation_reason Age, malware_family NanoCore, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_12_19, reviewed_at 2023_12_19, former_sid 2834441;)