alert dns $HOME_NET any -> any any (msg:"ET MALWARE Maldoc CnC Domain in DNS Lookup"; dns.query; content:"cloud-documents.com"; nocase; bsize:19; reference:url,blog.malwarebytes.com/threat-intelligence/2021/07/crimea-manifesto-deploys-vba-rat-using-double-attack-vectors/; classtype:domain-c2; sid:2033663; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_08_04, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_08_04;)