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Microsoft Secure

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Now you see me: Exposing fileless malware

Attackers are determined to circumvent security defenses using increasingly sophisticated techniques. Fileless malware boosts the stealth and effectiveness of an attack, and two of last year’s major ransomware outbreaks (Petya and WannaCry) used fileless techniques as part of their kill chains. The idea behind fileless malware is simple: If tools already exist on a device...

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Microsoft Contact: Stephen Smith (stepsmit)
Agency: Cinco Design
Agency Contact: Kate Callahan (kate@cincodesign.com)
Photographer: Amy Sacka (http://www.amysackaphotography.com/)
Shoot month: March 2017
Location: Portland, OR
Business: LinkedIn Datacenter

Windows Defender ATP machine learning and AMSI: Unearthing script-based attacks that ‘live off the land’

Scripts are becoming the weapon of choice of sophisticated activity groups responsible for targeted attacks as well as malware authors who indiscriminately deploy commodity threats. Scripting engines such as JavaScript, VBScript, and PowerShell offer tremendous benefits to attackers. They run through legitimate processes and are perfect tools for “living off the land”—staying away from the...

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