Phishing, Malware

Fake Windows Update screens harnessed in new ClickFix intrusions

Header graphic features a laptop with a red warning triangle and alert icons, dark background with streaming green code. It suggests concepts of cybersecurity threats, hacking, and system errors.

Information-stealing payloads are being spread via bogus Windows update screens as part of a new ClickFix attack campaign that has targeted organizations in the U.S., EMEA, and Asia-Pacific and Japan regions between Sep. 29 and Oct. 30, according to The Register.

Attacks commenced with the appearance of a blue Windows update screen in full-screen mode upon visiting a malicious site, followed by lures urging the installation of a "critical security update" through a set of instructions that trigger PowerShell code execution and steganographic loader deployment, eventually resulting in the delivery of the Rhadamanthys infostealer, a report from Huntress revealed.

Additional findings noted the continued operations of domains hosting the Windows Update lures spreading Rhadamanthys despite the infostealer's disruption in a law enforcement effort this month.

"All of these lures point to the same hex-encoded URL structure previously linked to the deployment of Rhadamanthys, although it appears this payload is no longer being hosted," said Huntress researchers.

Get daily email updates

SC Media's daily must-read of the most current and pressing daily news

By clicking the Subscribe button below, you agree to SC Media Terms of Use and Privacy Policy.

Related Terms

Adware

You can skip this ad in 5 seconds