alert dns $HOME_NET any -> any any (msg:"ET MALWARE DonotGroup CnC Domain in DNS Lookup"; dns.query; content:"data-backup.online"; nocase; endswith; classtype:command-and-control; sid:2027290; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, created_at 2019_04_29, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag APT, tag DonotGroup, updated_at 2020_09_17;)