alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE NanoCore RAT CnC 7"; flow:established,to_server; content:"|08 00 00 00 c1 c3 d0 32 43 59 a1 78|"; depth:12; reference:md5,2815f2a23e7383ca7821a40739f088b6; reference:url,medium.com/@the_abjuri5t/nanocore-rat-hunting-guide-cb185473c1e0; classtype:command-and-control; sid:2046914; rev:2; metadata:attack_target Client_Endpoint, created_at 2016_03_28, deployment Perimeter, malware_family NanoCore, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_07_26, former_sid 2816766;)