ET MALWARE Malicious SSL Certificate detected (PyXie)

Query · suricata

flow:established,to_client;
tls.cert_subject;
content:"CN=floppys.bit"; bsize:14; fast_pattern;
Raw source ET MALWARE Malicious SSL Certificate detected (PyXie) · 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 Malicious SSL Certificate detected (PyXie)";
    flow:established,to_client;
    tls.cert_subject;
    content:"CN=floppys.bit"; bsize:14; fast_pattern;
    reference:url,threatvector.cylance.com/en_us/home/meet-pyxie-a-nefarious-new-python-rat.html;
    classtype:domain-c2;
    sid:2029090; rev:1;
    metadata:attack_target Client_and_Server, created_at 2019_12_02, deployment Perimeter, malware_family PyXie, performance_impact Low, confidence Medium, signature_severity Major, tag SSL_Malicious_Cert, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_12_02, mitre_tactic_id TA0042, mitre_tactic_name Resource_Development, mitre_technique_id T1587, mitre_technique_name Develop_Capabilities;
)

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