Rule History

alert dns $HOME_NET any -> any any (msg:"ET MALWARE PhantomNet/Smanager CnC Domain in DNS Lookup (office365.blogdns .com)"; dns.query; content:"office365.blogdns.com"; nocase; bsize:21; reference:url,www.welivesecurity.com/2020/12/17/operation-signsight-supply-chain-attack-southeast-asia/; classtype:domain-c2; sid:2031432; rev:1; metadata:attack_target Client_Endpoint, created_at 2020_12_17, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_12_17;)