VERY IMPORTANT

TamperedChef is a global malvertising and SEO campaign that delivers seemingly legitimate installers disguised as common applications. These installers establish persistence and deliver obfuscated JavaScript payloads for remote access and control. The campaign uses social engineering, malvertising, SEO, and abused digital certificates to increase user trust and evade detection. It employs a network of U.S.-registered shell companies to acquire and rotate code-signing certificates. The campaign primarily affects healthcare, construction, and manufacturing sectors, with a concentration in the Americas. The attackers' motives may include selling remote access, stealing credentials, preparing for ransomware deployment, or engaging in opportunistic espionage.