alert dns $HOME_NET any -> any any (msg:"ET MALWARE RevC2 Domain in DNS Lookup (nopsec .org)"; dns.query; dotprefix; content:".nopsec.org"; nocase; endswith; reference:url,www.zscaler.com/blogs/security-research/unveiling-revc2-and-venom-loader; classtype:domain-c2; sid:2058146; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2024_12_09, deployment Perimeter, malware_family RevC2, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_12_09, mitre_tactic_id TA0037, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)