remote access Archives

Winsage

April 20, 2026

Microsoft releases emergency updates to fix Windows Server issues

Microsoft has confirmed that some administrators are experiencing difficulties installing the KB5082063 security update on Windows Server 2025. This month's Patch Tuesday updates have caused certain Windows servers, especially those with domain controller roles, to enter a restart loop due to failures in the Local Security Authority Subsystem Service (LSASS). Microsoft has released emergency out-of-band updates, including KB5091157 for Windows Server 2025, to address both the installation failure and the restart issues. Additionally, some Windows Server 2025 devices may boot into BitLocker recovery mode after installing the KB5082063 update. A bug affecting Windows Server 2019 and Windows Server 2022 that caused unexpected upgrades to Windows Server 2025 has also been resolved. Microsoft has issued various emergency updates throughout the year to address other issues, including a Bluetooth device visibility bug and vulnerabilities in the Routing and Remote Access Service (RRAS).

Winsage

April 16, 2026

Microsoft: April Windows Server 2025 update may fail to install

Microsoft is investigating an issue with the installation of the KB5082063 security update on Windows Server 2025 systems, where users are encountering the 0x800F0983 error code during the deployment of April 2026 cumulative updates. A service alert indicated that a limited number of servers may experience installation failures with this error. Additionally, some Windows Server 2025 devices may unexpectedly boot into BitLocker recovery mode after the update, requiring a BitLocker key, although this is unlikely to affect home users. Microsoft has also resolved a long-standing bug that caused Windows Server 2019 and 2022 systems to upgrade to Windows Server 2025 unexpectedly. Furthermore, Microsoft has released several emergency updates this year to address various security vulnerabilities, including issues with the Routing and Remote Access Service, Bluetooth device visibility, Microsoft account sign-ins, and installation challenges related to the March 2026 non-security preview update.

Tech Optimizer

April 16, 2026

MiningDropper Android Malware Exploits Lumolight App

Researchers at Cyble Research and Intelligence Labs (CRIL) have discovered an Android malware framework called MiningDropper, which is being used in various campaigns to distribute malicious payloads such as cryptocurrency miners, infostealers, Remote Access Trojans (RATs), and banking malware. Over 1,500 MiningDropper samples were detected in one month, with many showing minimal antivirus detection. MiningDropper operates as a multi-stage delivery framework that employs techniques like XOR-based obfuscation and AES encryption to evade detection. A recent variant uses a trojanized version of the Lumolight application as the initial infection vector, often spread through phishing links and fraudulent websites. The malware executes a series of stages, starting with decrypting an embedded asset and loading additional payloads, including a counterfeit Google Play update interface to deceive users. Two main campaign clusters have been identified: an infostealer campaign targeting Indian users by impersonating trusted entities, and a global campaign distributing the BTMOB RAT, which enables credential theft and device takeover. The final payload capabilities include extracting sensitive data, enabling full device compromise, facilitating financial fraud, and unauthorized cryptocurrency mining. MiningDropper's modularity allows it to adapt and scale across various campaigns while maintaining low detection rates.

Winsage

April 15, 2026

Microsoft fixes bug behind Windows Server 2025 automatic upgrades

Microsoft has resolved an issue that caused unexpected upgrades from Windows Server 2019 and 2022 to Windows Server 2025. This problem was first reported in September 2024 when administrators found their servers upgraded without the necessary licenses. Initially, Microsoft attributed the issue to misconfigured third-party update management software, while developers claimed it was due to Microsoft's procedural errors regarding update release speed and classification. Microsoft confirmed the resolution of the issue and re-enabled the upgrade offer through the Windows Update settings. Additionally, Microsoft released an out-of-band update to address complications from a previous non-security preview update and deployed emergency updates to fix sign-in disruptions across various applications. Other updates were issued to resolve Bluetooth visibility issues and security vulnerabilities in the Routing and Remote Access Service management tool.

AppWizard

April 14, 2026

Mirax RAT Targets Android Devices Through Meta Apps

Mirax is a remote access Trojan (RAT) targeting Android devices in Spanish-speaking countries, identified by Outpost24's KrakenLabs in early March. It propagates fraudulent advertisements on Meta-owned applications, allowing cybercriminals to gain initial access. Mirax can interact with compromised devices in real time, converting them into residential proxy nodes through ads on platforms like Facebook and Instagram. It uses SOCKS5 protocol and Yamux multiplexing to establish proxy channels and uncover victims' IP addresses. The malware captures keystrokes, steals sensitive data, executes commands, and monitors user activity. It employs overlay pages to steal credentials and orchestrates distribution through Meta ads and GitHub for malicious APK files. Users are tricked into enabling installations from "unknown sources," and the malware disguises itself behind video playback features. Additionally, a threat actor has been offering Mirax as a malware-as-a-service (MaaS) on illicit forums, with subscription prices starting at ,500 for three months. This service is described as highly controlled and exclusive, primarily targeting Russian-speaking actors in underground communities.

Tech Optimizer

April 13, 2026

Fake Claude site installs malware that gives attackers access to your computer

Claude, an AI tool developed by Anthropic, receives nearly 290 million web visits monthly and has become a target for cybercriminals. A fake website has been found that impersonates Claude, distributing a trojanized installer named Claude-Pro-windows-x64.zip. This installer, while appearing legitimate, deploys PlugX malware, granting attackers remote access to users' systems. The fraudulent site mimics the official download page and uses passive DNS records linked to commercial bulk-email platforms, indicating active maintenance by the operators. The ZIP file contains an MSI installer that incorrectly spells "Claude" as "Cluade" and creates a desktop shortcut that launches a VBScript dropper. This script runs the legitimate claude.exe while executing malicious activities in the background, including copying files to the Windows Startup folder to ensure persistence after reboot. The attack utilizes a DLL sideloading technique recognized by MITRE as T1574.002, where a legitimate G DATA antivirus updater is exploited with a malicious DLL. Within 22 seconds of execution, the malware establishes a connection to an IP address associated with Alibaba Cloud, indicating control over the compromised system. The dropper script also employs anti-forensic measures to delete itself and the VBScript after deployment. Indicators of compromise include the filenames Claude-Pro-windows-x64.zip, NOVUpdate.exe, avk.dll, and NOVUpdate.exe.dat, along with the network indicator 8.217.190.58:443 (TCP) as the command and control destination. Users are advised to download Claude only from the official site and to remain vigilant against potential compromises.

Winsage

April 7, 2026

“This was not opportunistic. It was precision.” — How North Korean hackers used Microsoft Teams and Slack to compromise Windows PCs with an elaborate ploy

On March 30, 2026, axios, a JavaScript HTTP client library, was temporarily compromised by suspected North Korean hackers who hijacked maintainer Jason Saayman's account. This allowed them to publish two malicious versions of axios on npm. The malicious versions were identified and removed within three hours by StepSecurity. A post-mortem blog on GitHub provided security measures for users of Windows, macOS, and Linux, highlighting risks from a Remote Access Trojan (RAT) introduced during the breach. The attack was attributed to a group known as UNC1069, which has been active since at least 2018. Two weeks prior to the breach, Saayman was targeted in a social engineering campaign where attackers posed as a legitimate company founder, leading him to install the RAT via a fake update during a Microsoft Teams meeting. Microsoft Teams was not compromised; it was used as a delivery method for the Trojan. Saayman noted the operation's sophistication.

Tech Optimizer

April 6, 2026

36 Malicious npm Packages Exploited Redis, PostgreSQL to Deploy Persistent Implants

Cybersecurity researchers have discovered 36 malicious packages in the npm registry that impersonate Strapi CMS plugins. These packages exploit Redis and PostgreSQL, deploy reverse shells, harvest credentials, and establish persistent implants. Each package consists of three files—package.json, index.js, and postinstall.js—without descriptions or repositories, and all use version 3.6.8 to mimic legitimate Strapi plugins. The malicious packages follow a naming convention starting with "strapi-plugin-" and were uploaded by four accounts within 13 hours. The identified packages include names like strapi-plugin-cron, strapi-plugin-database, and strapi-plugin-server. The malicious code is embedded in the postinstall script, executing automatically upon installation with the same privileges as the user. The payloads evolve from exploiting Redis for remote code execution to attempting direct PostgreSQL database exploitation and deploying persistent implants for remote access. The campaign appears to target cryptocurrency platforms, as indicated by the focus on credential theft and digital assets. Users of these packages are advised to assume compromise and rotate credentials. This incident reflects a broader trend of supply chain attacks in the open-source ecosystem, with recent examples including credential exfiltration payloads in GitHub repositories and compromised GitHub Actions workflows. Group-IB reported that software supply chain attacks are increasingly reshaping the cyber threat landscape, targeting trusted vendors and open-source software to gain access to downstream organizations.

Winsage

April 4, 2026

WhatsApp Malware Campaign Uses VBS to Hijack Windows

Microsoft has identified a cyberattack campaign that uses WhatsApp messages to distribute malicious Visual Basic Script (VBS) files targeting Windows systems. First detected in late February 2026, the campaign employs social engineering to trick users into executing the VBS files, which then create hidden directories and disguise themselves as legitimate Windows utilities. The malware downloads additional payloads from cloud platforms like AWS, Tencent Cloud, and Backblaze B2 to establish persistence and escalate privileges. It can bypass User Account Control (UAC), alter registry settings, and install malicious MSI packages, including remote access tools like AnyDesk, to maintain continuous access for attackers.

AppWizard

April 3, 2026

Google Responds As 50 Apps With 2 Million Downloads Hit By Malware

Researchers at McAfee Labs discovered that 50 Android applications on the Google Play Store contain malware known as NoVoice, which can grant full remote access to infected smartphones. These apps have over 2.3 million downloads. The malware can communicate with remote servers, profile devices, and download tailored root exploits, potentially compromising specific hardware and software configurations. However, devices with an Android security patch level of May 2021 or later are not vulnerable to these exploits, as the vulnerabilities were patched by Android between 2016 and 2021. Google Play Protect removes these apps and blocks new installs, and users are advised to keep their devices updated with the latest security patches.