Rule History

alert dns $HOME_NET any -> any any (msg:"ET RETIRED GobRAT CnC Domain in DNS Lookup (ktlvz .dnsfailover .net)"; dns.query; bsize:21; content:"ktlvz.dnsfailover.net"; nocase; reference:url,blogs.jpcert.or.jp/en/2023/05/gobrat.html; classtype:command-and-control; sid:2046730; rev:2; metadata:affected_product Linux, attack_target Networking_Equipment, created_at 2023_07_05, deployment Perimeter, former_category MALWARE, malware_family GobRAT, performance_impact Low, confidence High, signature_severity Major, tag RAT, updated_at 2025_04_17, reviewed_at 2025_04_17;)