Rule History

alert dns $HOME_NET any -> any any (msg:"ET MALWARE UNC4841 Related Domain in DNS Lookup (singnode .com)"; dns.query; dotprefix; content:".singnode.com"; nocase; endswith; reference:url,www.mandiant.com/resources/blog/barracuda-esg-exploited-globally; classtype:trojan-activity; sid:2046287; rev:2; metadata:affected_product Linux, attack_target SMTP_Server, created_at 2023_06_15, deployment Perimeter, malware_family UNC4841, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_10_01, reviewed_at 2024_10_01;)