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Rev: 1 • Apr 7, 2021, 12:00 PMET MALWARE Observed Malicious SSL Cert (AsyncRAT)
alert tls $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Observed Malicious SSL Cert (AsyncRAT)"; flow:established,to_client; tls.cert_issuer; content:"CN=DcRat Server"; fast_pattern; reference:md5,c57460b4d595a97fd37211e5087b2557; classtype:domain-c2; sid:2034847; rev:1; metadata:attack_target Client_and_Server, created_at 2021_04_07, deployment Perimeter, malware_family AsyncRAT, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_04_07, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;)
Apr 7, 2021, 12:00 PM
Apr 7, 2021, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 8, 2025, 9:34 PM
rules/emerging-malware.rules