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Microsoft Secure

Hunting down Dofoil with Windows Defender ATP

Dofoil is a sophisticated threat that attempted to install coin miner malware on hundreds of thousands of computers in March, 2018. In previous blog posts we detailed how behavior monitoring and machine learning in Windows Defender AV protected customers from a massive Dofoil outbreak that we traced back to a software update poisoning campaign several...

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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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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. To detect and respond to Dofoil in corporate networks, read Hunting down Dofoil with Windows Defender ATP. Just before noon on March 6 (PST), Windows Defender...

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