Rule History

alert dns $HOME_NET any -> any any (msg:"ET MALWARE Observed DNS Query to Phantom Captcha Domain (bsnowcommunications .com)"; dns.query; dotprefix; content:".bsnowcommunications.com"; nocase; endswith; reference:url,sentinelone.com/labs/phantomcaptcha-multi-stage-websocket-rat-targets-ukraine-in-single-day-spearphishing-operation/; reference:md5,61660f072008998bf57f8ad602408b68; classtype:trojan-activity; sid:2065339; rev:1; metadata:attack_target Client_Endpoint, created_at 2025_10_23, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_10_23;)