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...

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...

Clarifying the behavior of mandatory ASLR

Last week, the CERT/CC published an advisory describing some unexpected behavior they observed when enabling system-wide mandatory Address Space Layout Randomization ASLR using Windows Defender Exploit Guard WDEG and EMET on Windows 8 and above. In this blog post, we will explain the configuratio...

Clarifying the behavior of mandatory ASLR

Last week, the CERT/CC published an advisory describing some unexpected behavior they observed when enabling system-wide mandatory Address Space Layout Randomization ASLR using Windows Defender Exploit Guard WDEG and EMET on Windows 8 and above. In this blog post, we will explain the configuratio...

Windows Defender System Guard でシステムのセキュリティを強化し整合性を維持する

本記事は、Windows Security のブログ “Hardening the system and maintaining integrity with Windows Defender System Guard” 2017 年 10 月 23 日 米国...

Windows 8 and later fail to properly randomize every application if system-wide mandatory ASLR is enabled via EMET or Windows Defender Exploit Guard

Overview Microsoft Windows 8 introduced a change in how system-wide mandatory ASLR is implemented. This change requires system-wide bottom-up ASLR to be enabled for mandatory ASLR to receive entropy. Tools that enable system-wide ASLR without also setting bottom-up ASLR will fail to properly...

#AVGater vulnerability does not affect Windows Defender Antivirus, MSE, or SCEP

On November 10, 2017, a vulnerability called AVGater was discovered affecting some antivirus products. The vulnerability requires a non-administrator-level account to perform a restore of a quarantined file. Windows Defender Antivirus and other Microsoft antimalware products, including System...

#AVGater vulnerability does not affect Windows Defender Antivirus, MSE, or SCEP

On November 10, 2017, a vulnerability called AVGater was discovered affecting some antivirus products. The vulnerability requires a non-administrator-level account to perform a restore of a quarantined file. Windows Defender Antivirus and other Microsoft antimalware products, including System...

Detecting reflective DLL loading with Windows Defender ATP

Today's attacks put emphasis on leaving little, if any, forensic evidence to maintain stealth and achieve persistence. Attackers use methods that allow exploits to stay resident within an exploited process or migrate to a long-lived process without ever creating or relying on a file on disk. In...

Detecting reflective DLL loading with Windows Defender ATP

Today's attacks put emphasis on leaving little, if any, forensic evidence to maintain stealth and achieve persistence. Attackers use methods that allow exploits to stay resident within an exploited process or migrate to a long-lived process without ever creating or relying on a file on disk. In...

Windows Defender Exploit Guard: 攻撃表面を縮小して次世代型マルウェアに対抗する

本記事は、Windows Security のブログ “Windows Defender Exploit Guard: Reduce the attack surface against next-generation malware” 2017 年 10 月 23 日 米国...

Maximize security insights by integrating threat intelligence data from Akamai with your SIEM

Since 2005, when Gartner coined the term, SIEM Security Information and Event Management solutions have grown in importance for the security industry. SIEM solutions provide a centralized view to easily access and analyze security information from multiple sources, and then prioritize mitigation...

Windows Defender Exploit Guard: Reduce the attack surface against next-generation malware

Windows Defender Exploit Guard is a new set of intrusion prevention capabilities that ships with the Windows 10 Fall Creators Update. The four components of Windows Defender Exploit Guard are designed to lock down the device against a wide variety of attack vectors and block behaviors commonly us...

Making Microsoft Edge the most secure browser with Windows Defender Application Guard

Innovation in the attack space is constant as adversaries increase in both determination and sophistication. In response to increased investments in defense, attackers are adapting and improving tactics at breakneck speed. The good news is that defenders are also innovating and disrupting long...

Hardening the system and maintaining integrity with Windows Defender System Guard

One of the things we spend a great deal of time thinking about here at Microsoft is how attackers will attempt to persist and evade detection once they’ve successfully compromised a device. With Windows 10 we’ve made it more difficult to find ways to exploit potential entry points, and it’s clear...

Ukraine Police Warns of New NotPetya-Style Large Scale CyberAttack

Remember NotPetya? The Ransomware that shut down thousands of businesses, organisations and banks in Ukraine as well as different parts of Europe in June this year. Now, Ukrainian government authorities are once again warning its citizens to brace themselves for next wave of "large-scale"...

Windows Defender Antimalware/Antivirus Signature Definition Check

Windows Defender has an AntiMalware/AntiVirus signature that gets updated continuously. The signature definition has not been updated in more than 1 day. C Tenable Network Security, Inc. include"compat.inc"; if description scriptid103569; scriptversion"1.13";...

Windows Defender Bypass Tricks OS into Running Malicious Code

Researchers have developed a method for bypassing Windows Defender that will allow any malware to execute on a Windows machine. Microsoft, meanwhile, has told the experts that it does not see this as a security issue and will not address the problem in its native antimalware protection. A request...

Announcing the Windows Defender Advanced Threat Protection ISO 27001 audit assessment report

The security and privacy of customer data are our top priority. Our goals are simple: to operate our services with the security and privacy you expect from Microsoft, and to give you accurate assurances about our security and privacy practices. In line with our commitment to provide customers the...

Defender Android App suffers from an override access vulnerability

Defender is a smart life control system that can effectively monitor and control smart hardware devices in your home. Smart hardware can be connected via Bluetooth or wifi, and you can see the operation of each hardware through your cell phone. Defender Android APP has an override access...