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RIG Exploit Kit Infection Cycle Analysis

ID: 0bc4a9d8-e536-5d9b-96cb-d0da5a0488c9

STIX ID: report--0bc4a9d8-e536-5d9b-96cb-d0da5a0488c9

Feed Name: Zscaler Security Research Blog

Threat Score
70/100

Date Published: 2025-04-02

Date Updated: 2026-05-01

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**Executive Summary:** The report analyzes the RIG exploit kit's full infection chain — from malvertising and compromised-site iframes to obfuscated landing pages that execute VBScript and Flash exploits (CVE-2014-6332, CVE-2015-0313) — resulting in an encrypted payload that performs process hollowing and a secondary Blue Botnet .NET payload; the write-up includes technical details, deobfuscation artifacts, network indicators (domains, IPs, URIs), and observed C2 behavior.

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