Cybersecurity

Fake Antivirus Websites Are Spreading Dangerous Malware—Here's How to Stay Safe

Cybercriminals are spoofing trusted antivirus sites like Bitdefender to deliver VenomRAT malware, targeting users' credentials and cryptocurrency. Learn how to protect yourself.

May 28, 2025

2 min read

MalwareAntivirusBitdefenderVenomRATPhishingCybersecurity

Cybersecurity experts are warning users to be vigilant when downloading antivirus software, as cybercriminals are creating convincing fake websites that mimic trusted brands like Bitdefender. These fraudulent sites are being used to distribute the dangerous VenomRAT Remote Access Trojan (RAT), putting users' personal data and finances at risk.

How the Scam Works

Researchers from Domaintools recently uncovered a malicious domain, bitdefender-download[.]com, which closely resembles the legitimate Bitdefender download page. The fake site features a prominent “Download for Windows” button, which initiates a download from an Amazon S3 bucket. The downloaded file, named StoreInstaller.exe, contains configurations for VenomRAT, as well as code from the open-source post-exploitation frameworks SilentTrinity and StormKitty stealer.

What Is VenomRAT?

VenomRAT is a lightweight remote access trojan that allows attackers to take control of compromised Windows systems. Once installed, it can:

Steal login credentials
Log keystrokes
Access webcams
Run additional commands remotely

According to Domaintools, the primary goal of this campaign is to steal cryptocurrency and sell access to compromised systems to other threat actors. The researchers noted a “clear intent to target individuals for financial gain by compromising their credentials, crypto wallets, and potentially selling access to their systems.”

Wider Campaigns and Impersonation

This malicious operation overlaps with other campaigns impersonating banks and IT service providers. Notably, institutions like the Armenian IDBank and the Royal Bank of Canada have been referenced in related attacks, highlighting the broad scope of these threats.

How to Protect Yourself

Always verify the URL before downloading software—look for subtle differences in spelling or branding.
Download antivirus and other security tools only from official websites or trusted sources.
Be cautious when clicking on links in emails or social media messages, especially those promising free software.

Staying vigilant and practicing safe browsing habits are your best defenses against these evolving threats.

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