Rule History

alert dns $HOME_NET any -> any any (msg:"ET MALWARE Observed DNS Query to WinterVivern Domain (ocsp-reloads .com)"; dns.query; dotprefix; content:".ocsp-reloads.com"; nocase; endswith; reference:url,twitter.com/felixaime/status/1636760060931248130; classtype:trojan-activity; sid:2044712; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_03_21, deployment Perimeter, confidence High, signature_severity Major, tag WinterVivern, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_08_29, reviewed_at 2023_08_29;)