alert dns $HOME_NET any -> any any (msg:"ET MALWARE Malicious Domain in DNS Lookup (jscdn .biz)"; dns.query; bsize:9; content:"jscdn.biz"; nocase; reference:url,securityintelligence.com/posts/x-force-uncovers-global-netscaler-gateway-credential-harvesting-campaign/; classtype:trojan-activity; sid:2048475; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_10_06, deployment Perimeter, deprecation_reason Relevance, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_01_23, reviewed_at 2025_01_23;)