Rule History

alert dns $HOME_NET any -> any any (msg:"ET MALWARE Cobalt Strike Related Domain in DNS Lookup (mail .igov-service .net)"; dns.query; content:"mail.igov-service.net"; nocase; bsize:21; reference:md5,199369f6b6eba1147d7e1bca208d6dab; classtype:domain-c2; sid:2035914; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_04_13, deployment Perimeter, malware_family Cobalt_Strike, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_04_13;)