alert dns $HOME_NET any -> any any (msg:"ET MALWARE RomCom CnC Domain in DNS Lookup (finformservice .com)"; dns.query; bsize:18; content:"finformservice.com"; nocase; reference:url,blogs.blackberry.com/en/2023/07/romcom-targets-ukraine-nato-membership-talks-at-nato-summit; classtype:domain-c2; sid:2046813; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_07_12, deployment Perimeter, deprecation_reason Age, malware_family ROMCOM_RAT, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_08_16, reviewed_at 2023_08_16;)