Bicho_curioso.rar Apr 2026

Takes periodic screenshots of the desktop to capture sensitive information that might not be typed (e.g., virtual keyboards).

Captures keystrokes to steal credentials and private messages.

The .rar archive contains an executable file, often disguised with a fake icon (e.g., a PDF or image icon) and a double extension (e.g., Bicho_curioso.jpg.exe ). Bicho_curioso.rar

Delete the .rar file and any extracted contents. Do not move them to the Recycle Bin; use Shift + Delete .

The "Bicho_curioso.rar" file is a delivery vehicle for banking Trojans and info-stealers. Attackers leverage social engineering—using a title that piques curiosity—to trick users into downloading and executing the archive's contents. Once opened, it typically deploys malware designed to steal financial credentials and personal data. 2. Delivery and Social Engineering Primarily distributed via Phishing Emails (Spam). Takes periodic screenshots of the desktop to capture

The malware creates registry keys (e.g., in HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run ) to ensure it restarts whenever the computer boots.

The malware contacts a Command & Control (C2) server to download the final stage payload, usually a specialized Banking Trojan . 4. Malware Behavior Once active, the malware performs several invasive actions: Delete the

Unexpected entries in Run or RunOnce folders.