Rule History

alert dns $HOME_NET any -> any any (msg:"ET MALWARE Sidecopy APT Backdoor Related Domain in DNS Lookup (kokotech .xyz)"; dns.query; content:"kokotech.xyz"; nocase; bsize:12; reference:md5,bc8e094a4fb6c724e6b32a00df6262f9; reference:url,twitter.com/bofheaded/status/1505928947955302401; classtype:domain-c2; sid:2035559; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_03_22, deployment Perimeter, malware_family SideCopy, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_03_22;)