Rule History

alert dns $HOME_NET any -> any any (msg:"ET DELETED Possible 3CX Supply Chain Attack (2023-03-29) Domain Indiciator in DNS Lookup (visualstudiofactory .com)"; dns.query; dotprefix; content:".visualstudiofactory.com"; nocase; endswith; reference:url,www.reddit.com/r/crowdstrike/comments/125r3uu/20230329_situational_awareness_crowdstrike/; classtype:domain-c2; sid:2044819; rev:3; metadata:attack_target Client_Endpoint, created_at 2023_03_29, deployment Perimeter, performance_impact Low, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_12_01;)