CVE-2021-34471

CVE-2021-34471 is described across connected sources as a local privilege-escalation vulnerability in Microsoft Defender’s Malware Protection Engine (MPE)/Windows Defender. Some documents (e.g., NASL plugin) reference an affected MPE version prior to 1.1.18400.4 and cite insufficient access contr...

Attackers use Morse code, other encryption methods in evasive phishing campaign

Cybercriminals attempt to change tactics as fast as security and protection technologies do. During our year-long investigation of a targeted, invoice-themed XLS.HTML phishing campaign, attackers changed obfuscation and encryption mechanisms every 37 days on average, demonstrating high motivation...

Microsoft Windows Defender Directory Junction Denial-of-Service Vulnerability

This vulnerability allows local attackers to create a denial-of-service condition on affected installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within...

Microsoft Windows Defender Multiple RCE Vulnerabilities (Jul 2021)

This host is missing a critical security update according to Microsoft Security Updates released for Microsoft Windows Defender Protection Engine dated 13-07-2021. SPDX-FileCopyrightText: 2021 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by...

Microsoft Windows Defender Elevation of Privilege Vulnerability

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KLA12256 PE vulnerability in Microsoft System Center

An elevation of privilege vulnerability was found in Microsoft System Center. Malicious users can exploit this vulnerability to gain privileges. Original advisories CVE-2021-34471 Related products Microsoft-System-Center-Operations-Manager CVE list CVE-2021-34471 unknown Solution Install necessar...

Microsoft Windows Defender 权限许可和访问控制问题漏洞

Microsoft Windows Defender is a suite of antivirus software that comes with Windows systems from Microsoft Corporation USA. A vulnerability exists in Microsoft Windows Defender with privilege license and access control issues. The following products and versions are affected: Microsoft Malware...

Security Update for Windows Defender (August 2021)

The Malware Protection Engine version of Microsoft Windows Defender installed on the remote Windows host is equal or prior to 1.1.18400.4. It is, therefore, affected by a unspecified privilege escalation vulnerability. An authenticated, local attacker can exploit this to gain administrator access...

Sharing the first SimuLand dataset to expedite research and learn about adversary tradecraft

Last month, we introduced the SimuLand project to help security researchers around the world deploy lab environments to reproduce well-known attack scenarios, actively test detections, and learn more about the underlying behavior and implementation of adversary techniques. Since the release of th...

Sharing the first SimuLand dataset to expedite research and learn about adversary tradecraft

Last month, we introduced the SimuLand project to help security researchers around the world deploy lab environments to reproduce well-known attack scenarios, actively test detections, and learn more about the underlying behavior and implementation of adversary techniques. Since the release of th...

Spotting brand impersonation with Swin transformers and Siamese neural networks

Every day, Microsoft Defender for Office 365 encounters millions of brand impersonation emails. Our security solutions use multiple detection and prevention techniques to help users avoid divulging sensitive information to phishers as attackers continue refining their impersonation tricks. In thi...

Spotting brand impersonation with Swin transformers and Siamese neural networks

Every day, Microsoft Defender for Office 365 encounters millions of brand impersonation emails. Our security solutions use multiple detection and prevention techniques to help users avoid divulging sensitive information to phishers as attackers continue refining their impersonation tricks. In thi...

A New Wiper Malware Was Behind Recent Cyberattack On Iranian Train System

A cyber attack that derailed websites of Iran's transport ministry and its national railway system earlier this month, causing widespread disruptions in train services, was the result of a never-before-seen reusable wiper malware called "Meteor." The campaign — dubbed "MeteorExpress" — has not be...

BazaCall: Phony call centers lead to exfiltration and ransomware

Our continued investigation into BazaCall campaigns, those that use fraudulent call centers that trick unsuspecting users into downloading the BazaLoader malware, shows that this threat is more dangerous than what’s been discussed publicly in other security blogs and covered by the media. Apart...

BazaCall: Phony call centers lead to exfiltration and ransomware

Our continued investigation into BazaCall campaigns, those that use fraudulent call centers that trick unsuspecting users into downloading the BazaLoader malware, shows that this threat is more dangerous than what’s been discussed publicly in other security blogs and covered by the media. Apart...

CredPhish - A PowerShell Script Designed To Invoke Legitimate Credential Prompts And Exfiltrate Passwords Over DNS

CredPhish is a PowerShell script designed to invoke credential prompts and exfiltrate passwords. It relies on CredentialPicker to collect user passwords, Resolve-DnsName for DNS exfiltration, and Windows Defender's ConfigSecurityPolicy.exe to perform arbitrary GET requests. For a walkthrough, see...

Combing through the fuzz: Using fuzzy hashing and deep learning to counter malware detection evasion techniques

Today’s cybersecurity threats continue to find ways to fly and stay under the radar. Cybercriminals use polymorphic malware because a slight change in the binary code or script could allow the said threats to avoid detection by traditional antivirus software. Threat actors customize their wares...

Combing through the fuzz: Using fuzzy hashing and deep learning to counter malware detection evasion techniques

Today’s cybersecurity threats continue to find ways to fly and stay under the radar. Cybercriminals use polymorphic malware because a slight change in the binary code or script could allow the said threats to avoid detection by traditional antivirus software. Threat actors customize their wares...

Windows Defender update caught removing zip, exe, source code files

By Waqas The Windows Defender daily update flagged DeCSS DVD encryption software copy as a Trojan and quarantined it before deleting it. This is a post from HackRead.com Read the original post: Windows Defender update caught removing zip, exe, source code files...

This New Malware Hides Itself Among Windows Defender Exclusions to Evade Detection

Cybersecurity researchers on Tuesday lifted the lid on a previously undocumented malware strain dubbed "MosaicLoader" that singles out individuals searching for cracked software as part of a global campaign. "The attackers behind MosaicLoader created a piece of malware that can deliver any payloa...