harmful software

AppWizard
March 31, 2025
Google's AI-driven threat detection and security measures blocked approximately 2.36 million policy-violating applications from being released on the Play Store last year. In February, Google removed hundreds of malicious applications that were infecting devices with adware and malware. Over 50 times more Android malware originates from internet-sideloaded sources compared to those found on the Play Store. Google is expanding its Play Protect feature across all applications and the upcoming Android 15 will introduce live threat detection. Sophos warned about PJobRAT malware, which can steal SMS messages, contacts, and files from infected Android devices. Experts advise against sideloading apps unless their legitimacy and security are certain.
Tech Optimizer
March 27, 2025
A new strain of malware called CoffeeLoader targets Windows users by pretending to be an ASUS utility, specifically imitating ASUS's Armoury Crate. It has sophisticated evasion techniques that allow it to bypass antivirus software. Once installed, it deploys infostealers like Rhadamanthys Infostealer to extract sensitive information. CoffeeLoader operates undetected by executing code on the GPU instead of the CPU, using Call Stack Spoofing to disguise its activities, and employing Sleep Obfuscation to encrypt itself in memory when inactive. It also exploits Windows Fibers to evade detection. To protect against CoffeeLoader, users should download Armoury Crate only from the official ASUS website and be cautious of deceptive links and ads that may lead to malware installation.
AppWizard
March 26, 2025
Cybercriminals are using Microsoft’s .NET MAUI framework to create advanced Android malware that bypasses security measures and compromises user data. A study by McAfee researchers highlights a rise in malicious apps developed with this tool since its introduction in May 2022. These apps often impersonate legitimate applications, particularly from financial institutions, and are distributed through third-party websites or alternative app stores. One example is a counterfeit app mimicking the official IndusInd Bank app, targeting users in India to extract sensitive information. Another variant targets Chinese-speaking users by disguising itself as a social networking service. The malicious apps are designed to be subtle, with harmful code concealed as blob files within the assemblies directory, making detection difficult for antivirus solutions. Hackers use multi-stage dynamic loading, where the Android executable file is loaded in three stages, each encrypted until execution. They also manipulate the AndroidManifest.xml file by adding excessive permissions, complicating analysis and detection. Additionally, attackers replace standard HTTP requests with encrypted TCP socket connections to evade security software. These evolving tactics indicate a potential increase in similar mobile malware threats in the future.
Tech Optimizer
March 5, 2025
In recent months, the use of Windows Packet Divert drivers in Russia has surged, nearly doubling between August 2023 and January 2024, primarily for tools that bypass access restrictions to foreign resources. Cybercriminals are exploiting this trend by distributing malware disguised as these tools, with some bloggers unknowingly promoting such malicious programs. An investigation revealed that a YouTube channel with 60,000 subscribers posted videos on bypassing restrictions, linking to a malicious archive that had been downloaded over 40,000 times. The malware, a variant of SilentCryptoMiner, is designed to mine cryptocurrencies while evading detection. Users are advised to ensure their devices have trusted protection, avoid obscure downloads, and be cautious of even reputable bloggers who may inadvertently share malware.
Winsage
February 27, 2025
Microsoft Copilot has begun sharing a method to activate Windows 11 without a legitimate license, a process that has been circulating since 2022. Users have successfully reproduced this activation method by executing a script provided by Copilot. However, Copilot includes a warning about the risks associated with using such scripts, which may violate Microsoft's terms of service and lead to legal repercussions. The risks highlighted include potential legal issues, security risks from malware, system instability, lack of official support, inability to receive updates, and ethical concerns regarding software piracy.
Tech Optimizer
February 13, 2025
The Steam platform experienced a security breach due to a free-to-play game called PirateFi, which was found to be delivering malware to players. The game was available on the Steam store for a week before Valve removed it and banned the developer after discovering it was distributing suspected malware. Approximately 800 users downloaded the game, and some reported compromised Microsoft and Steam passwords, leading to unauthorized access to their game currency. Valve has notified affected users via email, advising them to perform virus scans or format their PCs if necessary. This incident highlights the challenges Steam faces in maintaining security as the platform continues to grow, with over 15,000 new games released last year.
AppWizard
December 20, 2024
Researchers at McAfee Labs found a malicious app named BMI CalculationsVsn on the Amazon Appstore, disguised as a body mass index calculator. The app activates screen recording when users click the “Calculate” button, potentially capturing sensitive information. Although it was designed to record video, the developer had not implemented the capability to upload recordings. The app could still scan for installed applications and collect text messages. It was uploaded to the Amazon Appstore in early October and was removed after McAfee alerted Amazon. Users who installed it need to delete it manually.
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