Revirado.rar

🛡️ Threat Intelligence Report: The "Revirado" (Spoofed) RAR Technique CVE-2023-38831. Core Mechanism: File Extension Spoofing.

If you have encountered a file similar to this, treat it with extreme caution: Revirado.rar

Online sandbox analysis of similar VBScript-based threats ( .vbs.bin ) reveals the following components: However, when the user opens these files, WinRAR

Cybercriminals create a .rar or .zip archive that appears to contain harmless files (e.g., invoice.pdf , image.jpg ). However, when the user opens these files, WinRAR erroneously triggers a hidden malicious script (e.g., .vbs or .cmd files) instead of the document. The malicious payload often hides within a subdirectory

Often involves screen_0.png or other image formats, indicating an attempt to mask the activity with a visual distraction or screen capture.

Ensure you are using the latest version of WinRAR, as RARLAB released a patch in August 2023.

The malicious payload often hides within a subdirectory inside the archive that matches the fake file name, bypassing basic user suspicion. 💻 Analysis of Typical Malicious Payloads