Rule History

alert dns $HOME_NET any -> any any (msg:"ET MALWARE Colibri Loader Domain in DNS Lookup (securetunnel .co)"; dns.query; dotprefix; content:".securetunnel.co"; nocase; endswith; reference:url,blog.malwarebytes.com/threat-intelligence/2022/04/colibri-loader-combines-task-scheduler-and-powershell-in-clever-persistence-technique/; classtype:trojan-activity; sid:2035899; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_04_12, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_08_01;)