alert dns $HOME_NET any -> any any (msg:"ET MALWARE BlackMatter CnC Domain in DNS Lookup (nowautomation .com)"; dns.query; content:"nowautomation.com"; nocase; bsize:17; reference:url,twitter.com/James_inthe_box/status/1433481199939297308; reference:md5,18c7c940bc6a4e778fbdf4a3e28151a8; classtype:domain-c2; sid:2033892; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_09_02, deployment Perimeter, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_09_02, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)