alert dns $HOME_NET any -> any any (msg:"ET MALWARE ELF/Rekoobe CnC Observed in DNS Query"; dns.query; content:"huawel.site"; nocase; endswith; reference:url,intezer.com/blog-linux-rekoobe-operating-with-new-undetected-malware-samples/; classtype:domain-c2; sid:2029309; rev:3; metadata:affected_product Web_Browsers, affected_product Linux, attack_target Client_Endpoint, created_at 2020_01_22, deployment Perimeter, malware_family Rekoobe, confidence High, signature_severity Major, updated_at 2020_10_27;)