StealC Malware Gets a Major Upgrade, Becomes More Dangerous

 


A harmful computer virus called StealC has recently been updated. It is now harder to detect and better at stealing personal data from users. This malware has been around for a few years, but its latest version makes it even more of a threat.

What is StealC?

StealC is a type of malicious software known as an “info-stealer.” It is designed to sneak into your computer, steal personal data like saved passwords and cookies, and even help other harmful programs get inside. It became popular on hacker forums in 2023, with access sold for about $200 per month.

In 2024, it was widely used in fake online ads. Some attacks locked devices into a mode where users could not do anything except follow the attacker’s instructions. This showed how advanced and harmful StealC could be.

Later that year, it was discovered that the malware could get around new security features in Google Chrome. These protections were meant to stop attackers from stealing browser cookies, but StealC found a way to bypass them and steal old cookies to hijack Google accounts.

What’s New in the 2025 Version

A fresh version of StealC was released to cybercriminals in March 2025. Since then, a few more updates have improved it even further. Experts who studied it found several key changes:


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