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Microsoft Patches Widely Exploited Windows LNK Zero-Day
Winsage
December 4, 2025

Microsoft Patches Widely Exploited Windows LNK Zero-Day

Cybercriminals are exploiting a vulnerability in Windows LNK (.lnk shortcut) files, identified as CVE-2025-9491, to deliver malware in targeted attacks. This flaw allows attackers to hide malicious commands within shortcut files, which execute when a user opens the crafted shortcut, leading to malware installation. The vulnerability has been actively exploited by at least 11 threat actor groups, including Evil Corp and Mustang Panda, with malware such as Ursnif and Trickbot being delivered through this exploit. Microsoft released a patch for this vulnerability in November 2025 after initially delaying it, citing the need for user interaction to trigger the exploit. Security recommendations include avoiding suspicious .LNK files, implementing strict email filtering, and applying the latest security updates.
Windows 10 update failure, autonomous AI cyberattack, Feds fumble Cisco patches
Winsage
November 17, 2025

Windows 10 update failure, autonomous AI cyberattack, Feds fumble Cisco patches

Microsoft has acknowledged an issue with the Windows 10 KB5068781 extended security update, which is failing to apply after installation for users with corporate licenses, resulting in a rollback. A group of hackers believed to be backed by China executed a large-scale cyberattack using Claude Code AI, targeting 30 organizations across various sectors. The Cybersecurity and Infrastructure Security Agency (CISA) reported that U.S. government agencies are struggling to patch critical vulnerabilities in Cisco devices amid the “Arcane Door” hacking campaign. Five individuals pleaded guilty to charges related to helping North Korean IT workers infiltrate 136 companies in the U.S. from September 2019 to November 2022. Port Alliance, a Russian port operator, reported disruptions due to a DDoS cyberattack targeting its operations related to coal and mineral fertilizer exports. DoorDash experienced a data breach on October 25, potentially affecting personal details of customers, Dashers, and merchants across the U.S. and Canada, traced back to a social engineering scam. North Korean hackers are using JSON storage services to host and deliver malware, approaching victims with job offers on platforms like LinkedIn. Jaguar Land Rover reported a financial impact of £196 million (0 million) from a cyberattack in September that forced production halts and compromised data.
Android’s Most Controversial Feature is Not Going Away—For Now
AppWizard
November 15, 2025

Android’s Most Controversial Feature is Not Going Away—For Now

Google has decided to maintain the option for sideloading unverified apps on Android, despite initially planning to eliminate it. This decision follows backlash from developers and users. The new sideloading framework will cater to advanced users who can acknowledge the risks of installing unverified software. Google may enhance the Android Debug Bridge (ADB) tool to facilitate this process, which will include warnings about the risks. The changes aim to improve user safety by preventing regular users from installing unknown applications, as sideloading has been exploited for malware distribution. Google plans to roll out this feature early next year and encourages developers to enroll in a new identity verification system for apps distributed outside the Play Store. The verification process will be less rigorous for students and hobbyists to promote innovation while prioritizing safety.
Emotet: The horse returns to a gallop more dangerous than ever
Tech Optimizer
November 13, 2025

Emotet: The horse returns to a gallop more dangerous than ever

Emotet is a Trojan Horse malware that emerged in 2014, impacting over 1.6 million devices and originally designed to steal banking credentials. Developed by the MealyBug criminal organization, it evolved into a modular Trojan-dropper, enabling it to download various payloads and act as Malware-as-a-Service on the dark web. Emotet spreads primarily through spam emails, often using malicious Word or Excel files, and has been disseminated via local area networks and password-protected zip folders. The malware operates through botnets categorized into epochs, with Epochs 1, 2, and 3 dismantled in 2021 by a coordinated international operation. Following this, Emotet resurfaced in November 2021 as Epochs 4 and 5, incorporating a Cobalt Strike beacon for enhanced propagation. Recommended precautions include keeping software updated, using two-factor authentication, and educating employees about email threats. Network administrators are advised to block unscannable email attachments, configure specific email filters, and maintain secure backups.
Google will allow 'experienced users' to sideload unverified Android apps
AppWizard
November 13, 2025

Google will allow ‘experienced users’ to sideload unverified Android apps

Google has initiated a rollout of a new safety feature for developers distributing apps outside the Play Store, requiring them to verify their identities for sideloading capabilities. Currently, select developers are invited to participate in the early access phase through the Android Developer Console. Experienced users will still have the option to sideload unverified apps, and Google is developing an “advanced flow” to allow these users to accept the risks associated with installing unverified software. The company is soliciting feedback to refine the process and emphasizes user awareness with clear warnings about potential risks. Google aims to complicate malware distribution by requiring verified identities from developers. Widespread implementation of this verification requirement is not expected until late 2026.
GhostBat RAT Android Malware Poses as Fake RTO Apps to Steal Banking Data from Indian Users
AppWizard
October 15, 2025

GhostBat RAT Android Malware Poses as Fake RTO Apps to Steal Banking Data from Indian Users

The GhostBat RAT campaign employs sophisticated malware distribution techniques, utilizing infection vectors such as WhatsApp, SMS with shortened URLs, GitHub-hosted APKs, and compromised websites to deliver malicious Android droppers. These droppers utilize multi-stage workflows, ZIP header manipulation, and string obfuscation to evade detection. The malware includes tools for stealing banking credentials and cryptocurrency miners, directing victims to phishing pages resembling the mParivahan app to collect sensitive information. SMS messages with banking keywords are exfiltrated to command and control servers, while incoming messages may be forwarded for OTP harvesting. Device registration occurs through a Telegram bot named GhostBatRat_bot. In July 2024, Android malware impersonating Regional Transport Office applications was documented, designed to steal contacts and SMS messages. Observations from September 2025 revealed over forty samples propagating through WhatsApp and SMS, ultimately delivering a malicious version of the mParivahan app. The malware initiates phishing activities by requesting SMS permissions and harvesting banking credentials. VirusTotal detections for the malware remain low due to its multi-layered dropper mechanisms and obfuscation techniques. The architecture of GhostBat RAT features multi-stage dropper workflows, native binary packing, and heavy string obfuscation. The first-stage dropper verifies device architecture and manufacturer, while subsequent stages decrypt and execute payloads, including a cryptominer library and a malicious APK for data theft. Victims encounter a counterfeit Google Play update page, leading to the installation of the malicious APK, which requests SMS permissions and presents a phishing interface. Users are prompted to enter their UPI PIN into a fake payment flow, which forwards the PIN to a Firebase endpoint. The campaign highlights the need for careful SMS permission management and vigilance against shortened URLs to combat emerging Android malware threats.
Ransomware Gangs Exploit Remote Access Tools to Stay Hidden and Maintain Control
Tech Optimizer
October 6, 2025

Ransomware Gangs Exploit Remote Access Tools to Stay Hidden and Maintain Control

Modern ransomware operations have evolved into complex, multi-stage campaigns that utilize legitimate Remote Access Tools (RATs) to maintain stealth and persistently dismantle organizational defenses. Ransomware encrypts critical data and demands ransom for restoration, with current operations being highly targeted compared to earlier mass phishing attacks. Attackers exploit trusted administrative software like AnyDesk, UltraViewer, RustDesk, and Splashtop to establish backdoors, escalate privileges, and deploy payloads across networks, moving laterally and evading detection. The ransomware kill chain consists of several stages: 1. Initial Access: Attackers gain access through credential compromise, often targeting administrator accounts. 2. Remote Tool Abuse: Attackers deploy RATs either by hijacking existing tools or performing silent installations. 3. Persistence & Privilege Consolidation: They maintain persistence using registry keys and scheduled tasks while escalating privileges. 4. Antivirus Neutralization & Anti-Forensics: Attackers stop antivirus services, manipulate policies, and clear logs to evade detection. 5. Payload Deployment & Execution: Ransomware is delivered and executed within remote sessions to avoid suspicion. Commonly abused RATs include AnyDesk, UltraViewer, AppAnywhere, RustDesk, Splashtop, and TightVNC, which have been associated with various ransomware campaigns. Understanding the tactics and techniques used by adversaries is crucial for effective defense, as they exploit legitimate tools to bypass security measures. Emerging trends include AI-driven RAT deployment, cloud-based RAT abuse, and the integration of RATs in ransomware-as-a-service offerings. A comprehensive defense strategy involves multiple layers of security, including virus protection, behavior-based detection, and application control, to counter the risks posed by RAT abuse in ransomware attacks.
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