alert http $HOME_NET any -> $EXTERNAL_NET 8000 (msg:"ET COINMINER Win32/Ymacco.AA2F Checking (Multiple OS)"; flow:established,to_server; http.start; content:"GET /update HTTP"; fast_pattern; http.header_names; content:"|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|"; depth:22; isdataat:!1,relative; reference:url,twitter.com/luc4m/status/1340737667961679881; classtype:coin-mining; sid:2031464; rev:2; metadata:attack_target Client_Endpoint, created_at 2020_12_29, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_12_30;)