Rule History

alert dns $HOME_NET any -> any any (msg:"ET MALWARE CosmicStrand Rootkit Related Domain in DNS Lookup (update .bokts .com)"; dns.query; content:"update.bokts.com"; nocase; bsize:16; reference:url,securelist.com/cosmicstrand-uefi-firmware-rootkit/106973/; classtype:domain-c2; sid:2037964; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_08_09, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_08_09;)