alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET POLICY Nimiq Miner Initiating Mining Session with Skypool"; flow:established,to_server; http.method; content:"GET"; http.host; content:"nimiq.skypool.org"; fast_pattern; http.header_names; content:"Upgrade"; content:"Sec-WebSocket-Version"; reference:md5,2a0a5e1ed928eb01e322dd3680a13eba; classtype:policy-violation; sid:2026868; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_02_01, deployment Perimeter, malware_family CoinMiner, performance_impact Low, confidence High, signature_severity Major, tag Coinminer, updated_at 2020_08_27;)