alert dns $HOME_NET any -> any any (msg:"ET MALWARE Matanbuchus CnC Domain in DNS Lookup (marle .io)"; dns.query; bsize:8; content:"marle.io"; nocase; reference:url,www.huntress.com/blog/clickfix-matanbuchus-astarionrat-analysis; classtype:trojan-activity; sid:2067739; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2026_02_17, deployment Perimeter, malware_family Matanbuchus, performance_impact Low, confidence High, signature_severity Major, updated_at 2026_02_17, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)