ET MALWARE Observed Malicious SSL Cert (MageCart Group 5 Staging Domain)

Query · suricata

flow:from_server,established;
tls.cert_subject;
content:"CN=localhost.localdomain";
tls.cert_serial;
content:"00:FF:A1:F0:8C:C1:45:51:3E";
Raw source ET MALWARE Observed Malicious SSL Cert (MageCart Group 5 Staging Domain) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tls $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Observed Malicious SSL Cert (MageCart Group 5 Staging Domain)";
    flow:from_server,established;
    tls.cert_subject;
    content:"CN=localhost.localdomain";
    tls.cert_serial;
    content:"00:FF:A1:F0:8C:C1:45:51:3E";
    reference:url,go.flashpoint.com/docs/inside-magecart-by-Flashpoint-and-RiskIQ;
    classtype:domain-c2;
    sid:2026603; rev:2;
    metadata:affected_product Web_Browsers, attack_target Client_and_Server, created_at 2018_11_13, deployment Perimeter, malware_family MageCart, performance_impact Low, confidence High, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_27, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
)

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