alert dns $HOME_NET any -> any any (msg:"ET EXPLOIT_KIT ZPHP Domain in DNS Lookup (gpksanfrancisco .com)"; dns.query; dotprefix; content:".gpksanfrancisco.com"; nocase; endswith; reference:url,www.trellix.com/en-us/about/newsroom/stories/research/new-techniques-of-fake-browser-updates.html; reference:url,infosec.exchange/@monitorsg/111442806557991840; classtype:exploit-kit; sid:2049268; rev:2; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2023_11_20, deployment Perimeter, deprecation_reason Relevance, performance_impact Low, confidence High, signature_severity Minor, tag Exploit_Kit, tag compromised_website, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_01_31, reviewed_at 2024_01_31;)