Versions (4)
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Rev: 1 • Oct 4, 2021, 12:00 PMET MALWARE Wintervivern Related CnC Domain in DNS Lookup (centr-security .com)
alert dns $HOME_NET any -> any any (msg:"ET MALWARE Wintervivern Related CnC Domain in DNS Lookup (centr-security .com)"; dns.query; content:"centr-security.com"; nocase; bsize:18; reference:url,lab52.io/blog/winter-vivern-all-summer/; reference:url,www.domaintools.com/resources/blog/winter-vivern-a-look-at-re-crafted-government-maldocs; classtype:domain-c2; sid:2034103; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_10_04, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_10_04;)
Oct 4, 2021, 12:00 PM
Oct 4, 2021, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 8, 2025, 9:34 PM
rules/emerging-malware.rules