alert dns $HOME_NET any -> any any (msg:"ET MALWARE Inter Skimmer CnC Domain in DNS Lookup"; dns.query; content:"tracker-visitors.com"; nocase; endswith; reference:url,www.fortinet.com/blog/threat-research/inter-skimmer-for-all.html; classtype:command-and-control; sid:2027689; rev:4; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2019_07_08, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_17;)