Resurgence of a Fake Captcha Malware Campaign

During an Advanced Continual Threat Hunt (ACTH) investigation in early February 2025, Trustwave SpiderLabs discovered a resurgence of fake CAPTCHA verifications designed to deceive victims into executing malicious PowerShell scripts. This campaign employs a multi-stage PowerShell execution process, ultimately delivering infostealers such as Lumma and Vidar.