alert dns $HOME_NET any -> any any (msg:"ET INFO Iperius Remote Related Domain in DNS Lookup"; dns.query; content:"us-rs1.iperius.com"; nocase; bsize:18; reference:md5,4e7d51132aee6a64b89d637b2f79d2d4; reference:md5,28fbfd1791dca3a37eb60d33ad00ba68; classtype:bad-unknown; sid:2044180; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_02_13, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_02_13, reviewed_at 2023_09_29;)