alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Lemon_Duck CnC Activity"; flow:established,to_server; http.uri; content:"/ln/core.png?"; startswith; http.host; content:"t.amynx.com"; bsize:11; fast_pattern; reference:url,github.com/sophoslabs/IoCs/blob/master/Trojan-LDMiner.csv; classtype:command-and-control; sid:2030827; rev:1; metadata:attack_target Client_Endpoint, created_at 2020_09_02, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_02;)