Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape.————————————————————————————————————————————–[ESXi Ransomware Attacks: Stealthy Persistence through SSH Tunneling](https://www.sygnia.co/blog/esxi-ransomware-ssh-tunneling-defense-strategies/)[MintsLoader: StealC and BOINC Delivery](https://www.esentire.com/blog/mintsloader-stealc-and-boinc-delivery)[Cloud Ransomware Developments -| The Risks of Customer-Managed Keys](https://www.sentinelone.com/blog/cloud-ransomware-developments-the-risks-of-customer-managed-keys/)[New TorNet backdoor seen in widespread campaign](https://blog.talosintelligence.com/new-tornet-backdoor-campaign/)[Active Exploitation: New Aquabot Variant Phones Home](https://www.akamai.com/blog/security-research/2025-january-new-aquabot-mirai-variant-exploiting-mitel-phones)[How we kept the Google Play -& Android app ecosystems safe in 2024](https://security.googleblog.com/2025/01/how-we-kept-google-play-android-app-ecosystem-safe-2024.html)[Solana Pump.fun tool DogWifTool compromised to drain wallets](https://www.bleepingcomputer.com/news/security/solana-pumpfun-tool-dogwiftool-compromised-to-drain-wallets/)[Defending against Adversarial Malware Attacks on ML-based Android Malware Detection Systems](https://arxiv.org/pdf/2501.13782)[Entropy-Synchronized Neural Hashing for Unsupervised Ransomware Detection](https://arxiv.org/pdf/2501.18131)[Probing Malware Propagation Model with Variable Infection Rates Under Integer, Fractional, and Fractal–Fractional Orders](https://www.mdpi.com/2504-3110/9/2/90)[WhatsApp says journalists and civil society members were targets of Israeli spyware](https://www.theguardian.com/technology/2025/jan/31/whatsapp-israel-spyware)Follow me on Twitter: [**@securityaffairs**](https://twitter.com/securityaffairs) and [**Facebook**](https://www.facebook.com/sec.affairs) and [Mastodon](https://infosec.exchange/@securityaffairs)[**Pierluigi Paganini**](http://www.linkedin.com/pub/pierluigi-paganini/b/742/559)**(** [**SecurityAffairs**](http://securityaffairs.co/wordpress/)**–** **hacking, newsletter)**
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