Microsoft Windows Defender - mpengine.dll Memory Corruption Exploit

Exploit for windows platform in category dos / poc Windows Defender inspects a variety of different archive formats, among others RAR. Inspection of mpengine.dll revealed that the code responsible for processing RAR archives appears to be a forked and modified version of the original unrar code;...

Microsoft Windows Defender - mpengine.dll Memory Corruption

Microsoft Windows Defender - mpengine.dll Memory Corruption Windows Defender inspects a variety of different archive formats, among others RAR. Inspection of mpengine.dll revealed that the code responsible for processing RAR archives appears to be a forked and modified version of the original unr...

Microsoft Windows Defender - 'mpengine.dll' Memory Corruption

Windows Defender inspects a variety of different archive formats, among others RAR. Inspection of mpengine.dll revealed that the code responsible for processing RAR archives appears to be a forked and modified version of the original unrar code; given that it still processes the VMSFUPCASE filter...

CVE-2018-0986

A remote code execution vulnerability exists when the Microsoft Malware Protection Engine does not properly scan a specially crafted file, leading to memory corruption, aka "Microsoft Malware Protection Engine Remote Code Execution Vulnerability." This affects Windows Defender, Windows Intune...

CVE-2018-0986

A remote code execution vulnerability exists when the Microsoft Malware Protection Engine does not properly scan a specially crafted file, leading to memory corruption, aka "Microsoft Malware Protection Engine Remote Code Execution Vulnerability." This affects Windows Defender, Windows Intune...

Remote code execution

A remote code execution vulnerability exists when the Microsoft Malware Protection Engine does not properly scan a specially crafted file, leading to memory corruption, aka "Microsoft Malware Protection Engine Remote Code Execution Vulnerability." This affects Windows Defender, Windows Intune...

CVE-2018-0986

CVE-2018-0986 (Microsoft Malware Protection Engine RCE) arises when the engine fails to properly scan a specially crafted file, causing memory corruption. This enables an attacker to execute arbitrary code with Local System privileges on affected systems, potentially taking control. Affected prod...

CVE-2018-0986

A remote code execution vulnerability exists when the Microsoft Malware Protection Engine does not properly scan a specially crafted file, leading to memory corruption, aka "Microsoft Malware Protection Engine Remote Code Execution Vulnerability." This affects Windows Defender, Windows Intune...

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...

Microsoft Malware Protection Engine < 1.1.14700.5 RCE

The version of Microsoft Malware Protection Engine MMPE installed on the remote Windows host is prior to 1.1.14700.5. It is, therefore, affected by a remote code execution vulnerability which could allow an attacker who successfully exploited this vulnerability to execute arbitrary code in the...

Microsoft Malware Protection Engine on Windows Defender RCE Vulnerability (Apr 2018)

This host is missing a critical security update according to Microsoft Security Updates released for Microsoft Malware Protection Engine dated 03-04-2018 SPDX-FileCopyrightText: 2018 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the...

KLA11217 ACE vulnerability in Windows Defender

An ACE vulnerability was found in Windows Defender. By exploiting this vulnerability malicious users can execute arbitrary code. This vulnerability can be exploited remotely via a specially designed file or possible via a specially designed website. Original advisories CVE-2018-0986 CVE-2018-0986...

Why Windows Defender Antivirus is the most deployed in the enterprise

Statistics about the success and sophistication of malware can be daunting. The following figure is no different: Approximately 96% of all malware is polymorphic meaning that it is only experienced by a single user and device before it is replaced with yet another malware variant. This is because...

Sharing research and discoveries at PWN2OWN

The annual PWN2OWN exploit contest at the CanSecWest conference in Vancouver, British Columbia, Canada, brings together some of the top security talent from across the globe in a friendly competition. For the participants, these events are a platform to demonstrate world-class skills and vie for...

Trojanized BitTorrent Software Update Hijacked 400,000 PCs Last Week

A massive malware outbreak that last week infected nearly half a million computers with cryptocurrency mining malware in just a few hours was caused by a backdoored version of popular BitTorrent client called MediaGet. Dubbed Dofoil also known as Smoke Loader, the malware was found dropping a...

Invisible resource thieves: The increasing threat of cryptocurrency miners

The surge in Bitcoin prices has driven widescale interest in cryptocurrencies. While the future of digital currencies is uncertain, they are shaking up the cybersecurity landscape as they continue to influence the intent and nature of attacks. Cybercriminals gave cryptocurrencies a bad name when...

New Cryptocurrency Mining Malware Infected Over 500,000 PCs in Just Few Hours

Two days ago, Microsoft encountered a rapidly spreading cryptocurrency-mining malware that infected almost 500,000 computers within just 12 hours and successfully blocked it to a large extent. Dubbed Dofoil, aka Smoke Loader, the malware was found dropping a cryptocurrency miner program as payloa...

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. Just before noon on March 6 PST, Windows Defender Antivirus blocked more than 80,000 instances of...

FinFisher exposed: A researcher’s tale of defeating traps, tricks, and complex virtual machines

Office 365 Advanced Threat Protection Office 365 ATP blocked many notable zero-day exploits in 2017. In our analysis, one activity group stood out: NEODYMIUM. This threat actor is remarkable for two reasons: Its access to sophisticated zero-day exploits for Microsoft and Adobe software Its use of...

A week in security (February 12 – February 18)

Last week on Malwarebytes Labs, we looked at a huge Android cryptomining campaign, malicious apps on Google Play, and some Apple scams doing the rounds. We also explored the world of healthcare security, and dived into the land of scammy Valentine's Day tricks and cheats. Other news Thought the...