What is CStealer

CStealer is a type of malware classified as a Trojan, specifically designed to steal login credentials stored in Google Chrome browsers. Discovered by MalwareHunterTeam and further researched by cybersecurity experts, CStealer operates by directly accessing a remote MongoDB database to store the stolen information. This method of data exfiltration is somewhat unique compared to other credential-stealing malware, which typically send the stolen data to a command-and-control (C&C) server. Removing CStealer from an infected system requires a thorough and methodical approach. The first step is to uninstall any suspicious programs. This can be done by accessing the Control Panel from the Start menu, navigating to “Programs and Features,” and looking for any suspicious or unknown programs. Once identified, the suspicious program should be uninstalled by selecting it and following the prompts to complete the uninstallation. Next, it is important to reset browser settings. In Google Chrome, this can be done by opening the browser, going to Settings, scrolling down to “Advanced,” and selecting “Restore settings to their original defaults.” Confirming this action will reset the browser settings. Additionally, clearing browsing data, including cookies and cached files, will help remove any remnants of the malware.


How CStealer infected your system

CStealer infiltrates computers through various deceptive methods. One common method is through spam emails, where cybercriminals distribute the malware via malicious attachments or links. When these attachments or links are opened, the malware is installed on the victim’s computer. Another method is through untrustworthy downloads. Downloading software from unofficial or peer-to-peer (P2P) networks can lead to malware infections, as these sources may offer seemingly legitimate software that is actually bundled with CStealer. Additionally, clicking on malicious advertisements can redirect users to websites that exploit vulnerabilities in their browsers or operating systems to install malware. Users who do not regularly update their software are at higher risk, as outdated software can be exploited by cybercriminals. Tools used to illegally activate software (cracks) and fake software updaters are also common methods for distributing CStealer.

  1. Download CStealer Removal Tool
  2. Use Windows Malicious Software Removal Tool to remove CStealer
  3. Use Autoruns to remove CStealer
  4. Files, folders and registry keys of CStealer
  5. Other aliases of CStealer
  6. How to protect from threats, like CStealer

Download Removal Tool

Download Removal Tool

To remove CStealer completely, we recommend you to use SpyHunter. It can help you remove files, folders, and registry keys of CStealer and provides active protection from viruses, trojans, backdoors. The trial version of SpyHunter offers virus scan and 1-time removal for FREE.

Download Alternative Removal Tool

Download Malwarebytes

To remove CStealer completely, we recommend you to use Malwarebytes Anti-Malware. It detects and removes all files, folders, and registry keys of CStealer and several millions of other malware, like viruses, trojans, backdoors.

Remove CStealer manually

Manual removal of CStealer by inexperienced users may become a difficult task because it does not create entries in Add/Remove Programs under Control Panel, does not install browser extensions, and uses random file names. However, there are pre-installed instruments in the Windows system, that allow you to detect and remove malware without using third-party applications. One of them is Windows Malicious Software Removal Tool. It comes with Windows Update in Windows 11, 10, 8. 8.1. For older operating system you can download it here: 64-bit version | 32-bit version.

Remove CStealer using Windows Malicious Software Removal Tool

  1. Type mrt in the search box near Start Menu.
  2. Run mrt clicking on found item.
  3. Click Next button.
  4. Choose one of the scan modes Quick scan, Full scan, Customize scan (Full scan recommended).
  5. Click Next button.
  6. Click on View detailed results of the scan link to view the scan details.
  7. Click Finish button.

Remove CStealer using Autoruns

CStealer often sets up to run at Windows startup as an Autorun entry or Scheduled task.

  1. Download Autoruns using this link.
  2. Extract the archive and run Autoruns.exe file.
  3. In Options menu make sure there are checkboxes near Hide Empty Locations, Hide Microsoft Entries, and Hide Windows Entries.
  4. Search for suspicious entries with weird names or running from locations like: C:\{username}\AppData\Roaming.
  5. Right-click on suspicious entry and choose Delete. This will prevent the threat to run at startup.
  6. Switch to Scheduled Tasks tab and do the same.
  7. To remove files themselves, click on suspicious entries and choose Jump to Entry…. Remove files or registry keys found.

Remove files, folder and registry keys of CStealer

CStealer files and folders


CStealer registry keys

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Aliases of CStealer

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How to protect from threats, like CStealer, in future

bitdefender internet security

Standard Windows protection or any decent third-party antivirus (Norton, Avast, Kaspersky) should be able to detect and remove CStealer. However, if you got infected with CStealer with existing and updated security software, you may consider changing it. To feel safe and protect your PC from CStealer on all levels (browser, e-mail attachments, Word or Excel scripts, file system) we recommend a leading provider of internet security solutions – BitDefender. Its solutions both for home and business users proved to be one of the most advanced and effective. Choose and get your BitDefender protection via the button below:

Download BitDefender
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James Kramer
Hello, I'm James. My website Bugsfighter.com, a culmination of a decade's journey in the realms of computer troubleshooting, software testing, and development. My mission here is to offer you comprehensive, yet user-friendly guides across a spectrum of topics in this niche. Should you encounter any challenges with the software or the methodologies I endorse, please know that I am readily accessible for assistance. For any inquiries or further communication, feel free to reach out through the 'Contacts' page. Your journey towards seamless computing starts here