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A Case Of Keitaro (featuring RIG And Nuclear)

ID: 78509d0f-b423-5252-a484-0bc91a365b0f

STIX ID: report--78509d0f-b423-5252-a484-0bc91a365b0f

Feed Name: Zscaler Security Research Blog

Threat Score
70/100

Date Published: 2025-04-02

Date Updated: 2026-05-01

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Zscaler ThreatLabZ observed a spike in RIG and Nuclear exploit kit activity being routed through Keitaro TDS campaigns; the analysis details Keitaro gate capabilities and misconfigurations, RIG and Nuclear gate and landing-page behaviours, exploitation of CVE-2014-6332 and CVE-2015-5122, and delivery of malware (Tofsee and Dofoil), with examples of URL/gate patterns and payload obfuscation techniques.

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