Versions (4)
Version DetailsCurrent
Rev: 2 • Apr 27, 2020, 12:00 PMET MALWARE ASNAROK Related Domain in DNS Lookup
alert dns $HOME_NET any -> any any (msg:"ET MALWARE ASNAROK Related Domain in DNS Lookup"; dns.query; content:"sophosfirewallupdate.com"; nocase; bsize:24; reference:url,news.sophos.com/en-us/2020/04/26/asnarok/; classtype:trojan-activity; sid:2030031; rev:2; metadata:attack_target Networking_Equipment, created_at 2020_04_27, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_17;)
Apr 27, 2020, 12:00 PM
Nov 17, 2020, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 19, 2025, 10:35 PM
rules/emerging-malware.rules