Going with the Flow(s): Distinct Clusters Target Individuals of Interest to Russia

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Written by: Gabby Roncone, Wesley Shields

Overview  Google Threat Intelligence Group (GTIG) is tracking three distinct suspected Russian cyber espionage threat clusters abusing legitimate authentication flows to target individuals working in academia, aerospace and defense, governments and think tanks across Europe, as well as academia and think tanks within the United States. Examples of these techniques can be found in our previous blog on UNC6293’s phishing operations. We now track an additional two distinct suspected Russian clusters, UNC7005 and UNC5976, which conduct phishing, abuse OAuth flows, and/or deploy malware to victims. UNC7005 in particular is tied to the hospitality captive portal redirects reported on by Reliaquest and Microsoft. While each group conducts their campaigns differently, they all ultimately demonstrate a focus on abuse of legitimate authentication workflows to compromise accounts. These clusters engage in persistent, adaptive phishing campaigns, using sophisticated social engineering tactics to compromise personal accounts across multiple platforms. Because these operations abuse legitimate authentication flows which may not immediately seem like phishing attempts to users, GTIG is raising awareness about these social engineering campaigns targeting individuals so that targets can more readily recognize malicious outreach.    UNC6293 We assess with moderate confidence that UNC6293 is a sub cluster of ICE RELIC (formerly APT29) responsible for initial access operations. UNC6293 operations were initially reported in June 2025 (also by Citizen …

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