Rule History

alert dns $HOME_NET any -> any any (msg:"ET INFO External IP Check Domain in DNS Lookup (whois .pconline .com .cn)"; dns.query; bsize:21; content:"whois.pconline.com.cn"; nocase; classtype:external-ip-check; sid:2047621; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_08_11, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_08_11, reviewed_at 2024_03_11; target:src_ip;)