deceptive website

Winsage
April 14, 2026
Cybercriminals are using sophisticated tactics to deceive users, particularly with a counterfeit website posing as a legitimate Windows 11 update. This site operates under the domain microsoft-update[.]support and is designed to trick individuals into downloading malware that compromises sensitive information. The site is written in French and mimics a genuine cumulative update for Windows 11, version 24H2, featuring a convincing KB article number and a blue download button. The malware is packaged as a Windows update using the WiX Toolset 4.0.0.5512 and is labeled "WindowsUpdate 1.0.0.msi," with properties that suggest it is from Microsoft. At the time of analysis, VirusTotal showed no detections for the malware, which conceals its harmful code within an Electron shell, making it difficult to identify. Users are advised to download updates directly through the Windows Settings app or from Microsoft's official support hub.
Tech Optimizer
March 27, 2026
A deceptive website impersonating Avast antivirus tricks users into downloading Venom Stealer malware, which steals passwords, session cookies, and cryptocurrency wallet information. The site conducts a fake virus scan, falsely reporting threats to encourage users to download a malicious file named Avastsystemcleaner.exe. This file mimics legitimate software and operates stealthily, targeting web browsers to harvest credentials and session cookies. It also captures screenshots and sends stolen data to the command-and-control domain app-metrics-cdn[.]com via unencrypted HTTP. The malware employs evasion techniques to avoid detection and is part of a long-standing cybercrime tactic that exploits user trust in security software. Indicators of compromise include the file hash SHA-256: ecbeaa13921dbad8028d29534c3878503f45a82a09cf27857fa4335bd1c9286d, the domain app-metrics-cdn[.]com, and the network indicator 104.21.14.89.
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