Water Gamayun, a suspected Russian threat actor also known as EncryptHub and Larva-208, has been exploiting the MSC EvilTwin (CVE-2025-26633), a zero-day vulnerability that was patched on March 11.
In the first installment of this two-part series, Trend Research discussed in depth its discovery of an Water Gamayun campaign exploiting this vulnerability. In this blog entry, we will cover the various delivery methods, custom payloads and techniques used by Water Gamayun to compromise victim systems and exfiltrate sensitive data.
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Source: Trend Micro
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