In September 2025, Trend Micro researchers noted a striking decline in new command and control infrastructure activity associated with Lummastealer (which Trend Micro tracks as Water Kurita), as well as a significant reduction in the number of endpoints targeted by this notorious malware.
This sudden drop appears to align with a targeted underground exposure campaign that has put the spotlight on individuals allegedly linked to the Lummastealer operation. Allegedly driven by competitors, this campaign has unveiled personal and operational details of several supposed core members, leading to significant changes in Lummastealer’s infrastructure and communications.
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Source: Trend Micro
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