Back in 2024, Kaspersky researchers gave a brief description of a complex cyberespionage campaign that we dubbed “PassiveNeuron”. This campaign involved compromising the servers of government organizations with previously unknown APT implants, named “Neursite” and “NeuralExecutor”.
However, since its discovery, the PassiveNeuron campaign has been shrouded in mystery. For instance, it remained unclear how the implants in question were deployed or what actor was behind them. After the researchers detected this campaign and prevented its spreading back in June 2024, they did not see any further malware deployments linked to PassiveNeuron for quite a long time, about six months. However, since December 2024, Kaspersky researchers have observed a new wave of infections related to PassiveNeuron, with the latest ones dating back to August 2025.
Read more…
Source: Kaspersky
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