Dismantling a fileless campaign: Microsoft Defender ATP next-gen protection exposes Astaroth attack

Advanced technologies in Microsoft Defender ATP next-generation protection exposed and defeated a widespread fileless campaign that completely “lived off the land” throughout a complex attack chain that run the info-stealing backdoor Astaroth directly in memory
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Inside out: Get to know the advanced technologies at the core of Microsoft Defender ATP next generation protection

While Windows Defender Antivirus makes catching 5 billion threats on devices every month look easy, multiple advanced detection and prevention technologies work under the hood to make this happen. Multiple next-generation protection engines to detect and stop a wide range of threats and attacker techniques at multiple points, providing industry-best detection and blocking capabilities.
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Out of sight but not invisible: Defeating fileless malware with behavior monitoring, AMSI, and next-gen AV

Removing the need for files is the next progression of attacker techniques. While fileless techniques used to be employed almost exclusively in sophisticated cyberattacks, they are now becoming widespread in common malware, too.
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Office VBA + AMSI: Parting the veil on malicious macros

As part of our continued efforts to tackle entire classes of threats, Office 365 client applications now integrate with Antimalware Scan Interface (AMSI), enabling antivirus and other security solutions to scan macros and other scripts at runtime to check for malicious behavior. Macro-based threats have always been a prevalent entry point for malware, but we
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