Stealerium Trojan

Immediate action needed—Stealerium is a stealthy and versatile .NET‑based Trojan with serious data-stealing capabilities.

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Threat Overview

Threat Type	Trojan (Info‑stealer / Cryptominer)
Detection Names	Stealerium (no known alias listed)
Symptoms	Slow performance, freezes, unusual files, running unknown processes
Damage & Distribution	Credential theft, wallet compromise, data loss; delivered via disguised social-engineered files
Danger Level	High — versatile and persistent with stealthy evasion
Removal Tool	SpyHunter

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How Stealerium Trojan Virus Installs and Operates

Stealerium typically enters your system through deceptive social engineering—fake invoices, booking confirmations, or payment reminders containing malicious attachments like JS or VBS scripts. Once executed, it elevates privileges and burrows into your system. From there, it quietly exfiltrates sensitive data, may mine cryptocurrency, or prepare the ground for further payloads.

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What Stealerium Does to Your System

• Grabs sensitive credentials, browser cookies, crypto wallets, system keys, and Steam tokens
• Uses covert communication channels like Zulip or GoFile for data transfer
• May act as a cryptominer, info‑stealer, or malware loader
• Removes traces using dynamic blocklists and evasion mechanisms

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Persistence & Reinfection Tactics

Stealerium hides its processes under benign-looking names and installs startup scripts, scheduled tasks, and registry entries to survive reboot and removal. It may disguise itself as system helpers or updaters, making manual removal risky without the proper tools.

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How Stealerium Installs on Systems

• Delivered via phishing attachments such as IMG, VBS, or JS files
• Embeds itself in system directories, registry entries, and startup items
• Uses privilege escalation to bypass standard user controls

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What Data Stealerium Tries to Steal

Stealerium targets a wide range of sensitive user data:

• Login credentials and banking details
• Cryptocurrency wallets and private keys
• VPN credentials and Windows product keys
• Steam and browser session tokens
• Autofill data, cookies, and clipboard contents

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Persistence Tactics Used by Stealerium

• Startup folders: Loads from common user and system startup directories
• Program folders: Hides in recently modified folders under Program Files and AppData
• Temp files: Stores temporary data in Local/Temp folders for task scheduling
• Scheduled Tasks: Creates recurring jobs that re-launch the malware
• Registry keys: Adds entries under Run, RunOnce, and Services to reinitiate after reboot

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Manual Trojan Malware Removal Guide

Step 1: Boot into Safe Mode

1. Restart your computer.
2. Before Windows starts, press the F8 key (or Shift + F8 on some systems).
3. Select Safe Mode with Networking from the Advanced Boot Options menu.
4. Press Enter to boot.

This prevents the Trojan from running and makes it easier to remove.

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Step 2: Identify and Stop Malicious Processes

1. Press Ctrl + Shift + Esc to open Task Manager.
2. Go to the Processes tab (or Details in Windows 10/11).
3. Look for suspicious processes using high CPU or memory, or with unfamiliar names.
4. Right-click on the suspicious process and select Open File Location.
5. If the file is in a temporary or system folder and looks unfamiliar, it is likely malicious.
6. Right-click the process and choose End Task.
7. Delete the associated file in File Explorer.

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Step 3: Remove Trojan-Related Files and Folders

1. Press Win + R, type %temp%, and press Enter.
2. Delete all files in the Temp folder.
3. Also check these directories for unfamiliar or recently created files:
   • C:\Users\YourUser\AppData\Local\Temp
   • C:\Windows\Temp
   • C:\Program Files (x86)
   • C:\ProgramData
   • C:\Users\YourUser\AppData\Roaming
4. Delete suspicious files or folders.

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Step 4: Clean Trojan Malware from Registry

1. Press Win + R, type regedit, and press Enter.
2. Navigate to the following paths:
   • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
   • HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
3. Look for entries launching files from suspicious locations.
4. Right-click and delete any entries you don’t recognize.

Warning: Editing the registry can harm your system if done improperly. Proceed with caution.

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Step 5: Reset Browser Settings

Google Chrome

1. Go to Settings > Reset Settings.
2. Click Restore settings to their original defaults and confirm.

Mozilla Firefox

1. Go to Help > More Troubleshooting Information.
2. Click Refresh Firefox.

Microsoft Edge

1. Go to Settings > Reset settings.
2. Click Restore settings to their default values.

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Step 6: Run a Full Windows Defender Scan

1. Open Windows Security via Settings > Update & Security.
2. Click Virus & threat protection.
3. Choose Scan options, select Full scan, and click Scan now.

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Step 7: Update Windows and Installed Software

1. Press Win + I, go to Update & Security > Windows Update.
2. Click Check for updates and install all available updates.

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Automatic Trojan Removal Using SpyHunter

If manually removing the Trojan seems difficult or time-consuming, using SpyHunter is the recommended method. SpyHunter is an advanced anti-malware tool that detects and eliminates Trojan infections effectively.

Step 1: Download SpyHunter

Use the following official link to download SpyHunter: Download SpyHunter

For full instructions on how to install, follow this page: Official SpyHunter Download Instructions

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Step 2: Install SpyHunter

1. Locate the SpyHunter-Installer.exe file in your Downloads folder.
2. Double-click the installer to begin setup.
3. Follow the on-screen prompts to complete the installation.

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Step 3: Scan Your System

1. Open SpyHunter.
2. Click Start Scan Now.
3. Let the program detect all threats, including Trojan components.

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Step 4: Remove Detected Malware

1. After the scan, click Fix Threats.
2. SpyHunter will automatically quarantine and remove all identified malicious components.

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Step 5: Restart Your Computer

Restart your system to ensure all changes take effect and the threat is completely removed.

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Tips to Prevent Future Trojan Infections

• Avoid downloading pirated software or opening unknown email attachments.
• Only visit trusted websites and avoid clicking on suspicious ads or pop-ups.
• Use a real-time antivirus solution like SpyHunter for ongoing protection.
• Keep your operating system, browsers, and software up to date.

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Should You Be Worried About Stealerium?

Yes. Stealerium is a sophisticated, multi-purpose Trojan capable of serious damage. It doesn’t just steal passwords—it compromises entire digital identities, from crypto wallets to system licenses. Its stealth and persistence make it hard to remove manually. If left unchecked, it could lead to financial theft, data leaks, or even identity fraud.

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Conclusion

Stealerium is not just another virus—it’s a high-risk Trojan that blends data theft, cryptomining, and stealth techniques into a single payload. It spreads quickly, hides deeply, and causes significant damage. A full system scan with SpyHunter, followed by careful manual cleanup, is the most effective way to eliminate it.