alert dns $HOME_NET any -> any any (msg:"ET MALWARE Glupteba CnC Observed in DNS Query"; dns.query; content:"roundworld.club"; nocase; endswith; reference:url,www.cybereason.com/blog/glupteba-expands-operation-and-toolkit-with-lolbins-cryptominer-and-router-exploit; classtype:command-and-control; sid:2028592; rev:3; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2019_09_17, deployment Perimeter, confidence High, signature_severity Major, updated_at 2020_09_17;)