Rule History

alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Observed Malicious SSL Cert (Win32/Gadwats Banker CnC Domain)"; flow:from_server,established; tls.cert_subject; content:"CN=www.windowsdriversupd.com"; nocase; endswith; reference:md5,07b78bcfb2a6540f060385c9bf00c155; reference:url,www.microsoft.com/en-us/wdsi/threats/malware-encyclopedia-description?Name=Backdoor:Win32/Gadwats.A; classtype:domain-c2; sid:2026467; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2018_10_10, deployment Perimeter, malware_family Gadwats, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Banker, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_16, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)