Shifts in the Underground: The Impact of Water Kurita’s (Lumma Stealer) Doxxing


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.

Read more…
Source: Trend Micro


Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox


Related:

  • Foxconn electronics giant hit by ransomware, $34 million ransom

    December 9, 2020

    Foxconn electronics giant suffered a ransomware attack at a Mexican facility over the Thanksgiving weekend, where attackers stole unencrypted files before encrypting devices. Foxconn is the largest electronics manufacturing company globally, with recorded revenue of $172 billion in 2019 and over 800,000 employees worldwide. Foxconn subsidiaries include Sharp Corporation, Innolux, FIH Mobile, and Belkin. BleepingComputer has been ...

  • Norway: Russian APT28 state hackers likely behind Parliament attack

    December 9, 2020

    Russian-backed hacking group APT28 has likely brute-forced multiple Norwegian Parliament (Stortinget) email accounts on August 24, 2020, according to the Norwegian Police Security Service (PST, short for Politiets Sikkerhetstjeneste). Attackers gained access to a limited number of Stortinget email accounts of representatives and employees as disclosed by Stortinget director Marianne Andreassen. A statement published on the parliament’s ...

  • Severe MDHexRay bug affects 100+ GE Healthcare imaging systems

    December 9, 2020

    A vulnerability in GE Healthcare’s proprietary management software used for medical imaging devices could put patients’ health privacy at risk, potentially their lives. The flaw received the name MDHexRay (CVE-2020-25179) and a severity score of 9.8 out of 10. It affects more than 100 CT, X-Ray, MRI device models in a dozen product lines from the ...

  • Chinese Breakthrough in Quantum Computing a Warning for Security Teams

    December 7, 2020

    China’s top quantum-computer researchers have reported that they have achieved quantum supremacy, i.e., the ability to perform tasks a traditional supercomputer cannot. And while it’s a thrilling development, the inevitable rise of quantum computing means security teams are one step closer to facing a threat more formidable than anything before. Researchers from the University of Science ...

  • RansomExx Ransomware Gang Dumps Stolen Embraer Data: Report

    December 7, 2020

    Hackers have dumped sensitive company data that was stolen during a ransomware attack last month on aircraft manufacturer Embraer. The compromised data appeared on a new dark web site created to publish leaked information, according to a published report. The move appears to be a revenge for the Brazilian-based company’s refusal to pay a ransom in ...

  • NSA warns of Russian state-sponsored hackers exploiting VMWare vulnerability

    December 7, 2020

    The US National Security Agency has published a security alert today urging companies to update VMWare products for a vulnerability that is currently exploited by “Russian state-sponsored malicious cyber actors.” The vulnerability tracked as CVE-2020-4006, impacts VMWare endpoint and identity management products, often deployed in enterprise and government networks. The affected products, listed below, allow system administrators ...