alert dns $HOME_NET any -> any any (msg:"ET MALWARE IcedID CnC Domain in DNS Lookup"; dns.query; content:"smostluxi.com"; nocase; bsize:13; reference:md5,a5813c0cefbbf2ead1cfcea6a2de43a0; classtype:domain-c2; sid:2043267; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_01_10, deployment Perimeter, deprecation_reason Age, malware_family IcedID, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_02_21;)