ClickFix Campaign Uses EtherHiding and GULoader to Infect Windows Users via Fake CAPTCHA
AI-summarised brief · reviewed before publication
A new cyberattack campaign, dubbed ClickFix, has been targeting Windows users through fake CAPTCHA pages since April 2026. The campaign combines three techniques - EtherHiding, a blockchain-based payload method; ClickFix, a social engineering trick; and GULoader, a memory-based malware downloader - to evade standard security defenses. The attack begins on a compromised European small-business website and ends with an attempt to load GULoader onto a victim's machine. The campaign targets users who arrive at a legitimate-looking website through a Google search, with no phishing email or suspicious link involved.
💡 Why It Matters
- · This campaign highlights the growing sophistication of cyber threats, where attackers blend into normal browsing to deceive both users and automated security tools.
- · The use of legitimate-looking websites and blockchain-based payload methods makes it challenging for traditional defenses to detect the attack, underscoring the need for more advanced threat detection techniques.