ET MALWARE [PTsecurity] Fake SSL Certificate Observed (Yahoo)

Query · suricata

tls.cert_subject;
content:"C=US";
content:"ST=Arizona";
content:"L=Phoenix";
content:"O=Yahoo Widget, Inc.";
content:"OU=Yahoo Widget Bureau";
content:"CN=Yahoo Widget, Inc.";
tls.cert_issuer;
content:"C=US";
content:"ST=Arizona";
content:"L=Phoenix";
content:"O=Yahoo Widget, Inc.";
content:"OU=Yahoo Widget Bureau";
content:"CN=Yahoo Widget, Inc."; fast_pattern;
Raw source ET MALWARE [PTsecurity] Fake SSL Certificate Observed (Yahoo) · 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 1024: -> $HOME_NET any (
    msg:"ET MALWARE [PTsecurity] Fake SSL Certificate Observed (Yahoo)";
    tls.cert_subject;
    content:"C=US";
    content:"ST=Arizona";
    content:"L=Phoenix";
    content:"O=Yahoo Widget, Inc.";
    content:"OU=Yahoo Widget Bureau";
    content:"CN=Yahoo Widget, Inc.";
    tls.cert_issuer;
    content:"C=US";
    content:"ST=Arizona";
    content:"L=Phoenix";
    content:"O=Yahoo Widget, Inc.";
    content:"OU=Yahoo Widget Bureau";
    content:"CN=Yahoo Widget, Inc."; fast_pattern;
    reference:md5,ce413a29e6cde5701a26e7e4e02ecc66;
    classtype:trojan-activity;
    sid:2025412; rev:5;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_03_12, deployment Perimeter, malware_family QRat, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_19;
)

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