Versions (4)
Version DetailsCurrent
Rev: 1 • Aug 15, 2022, 12:00 PMET MALWARE Observed DNS Query to Win.Backdoor.Kolobko Domain in DNS Lookup (ciscovpn2 .com)
alert dns $HOME_NET any -> any any (msg:"ET MALWARE Observed DNS Query to Win.Backdoor.Kolobko Domain in DNS Lookup (ciscovpn2 .com)"; dns.query; dotprefix; content:".ciscovpn2.com"; nocase; endswith; reference:url,blog.talosintelligence.com/2022/08/recent-cyber-attack.html; classtype:trojan-activity; sid:2038510; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_08_15, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_08_15;)
Aug 15, 2022, 12:00 PM
Aug 15, 2022, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 1, 2025, 8:35 PM
rules/emerging-malware.rules