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Microsoft Secure

Poisoned peer-to-peer app kicked off Dofoil coin miner outbreak

On March 7, we reported that a massive Dofoil campaign attempted to install malicious cryptocurrency miners on hundreds of thousands of computers. Windows Defender Antivirus, with its behavior monitoring, machine learning technologies, and layered approach to security detected and blocked the attack within milliseconds. Windows 10 S, a special configuration of Windows 10 providing Microsoft-verified security,...

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Invisible resource thieves: The increasing threat of cryptocurrency miners

The surge in Bitcoin prices has driven widescale interest in cryptocurrencies. While the future of digital currencies is uncertain, they are shaking up the cybersecurity landscape as they continue to influence the intent and nature of attacks. Cybercriminals gave cryptocurrencies a bad name when ransomware started instructing victims to pay ransom in the form of...

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Behavior monitoring combined with machine learning spoils a massive Dofoil coin mining campaign

Update: Further analysis of this campaign points to a poisoned update for a peer-to-peer (P2P) application. For more information, read Poisoned peer-to-peer app kicked off Dofoil coin miner outbreak. Just before noon on March 6 (PST), Windows Defender Antivirus blocked more than 80,000 instances of several sophisticated trojans that exhibited advanced cross-process injection techniques, persistence...

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Uncovering cross-process injection with Windows Defender ATP

Windows Defender Advanced Threat Protection (Windows Defender ATP) is a post-breach solution that alerts security operations (SecOps) personnel about hostile activity. As the nature of attacks evolve, Windows Defender ATP must advance so that it continues to help SecOps personnel uncover and address the attacks. With increasing security investments from Microsoft—read how Windows 10 continues...

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