Rule History

alert dns $HOME_NET any -> any any (msg:"ET MALWARE Lazarus Group Domain in DNS Lookup (chrysalisc .com)"; dns.query; bsize:14; content:"chrysalisc.com"; nocase; reference:url,www.verfassungsschutz.de/SharedDocs/publikationen/DE/cyberabwehr/2024-02-19-joint-cyber-security-advisory-englisch.pdf?__blob=publicationFile&v=2; classtype:trojan-activity; sid:2051009; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2024_02_21, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_02_21, reviewed_at 2025_07_14;)