Wallpaper Engine pulls app wallpaper support after malware hijacking

Wallpaper Engine is permanently removing its application wallpaper feature from Steam after bad actors exploited it to spread malware. Users have until Monday, July 6 to back up any wallpapers sourced from the app before it disappears for good.

The developers posted a statement on Steam explaining the decision, noting the affected feature touches only 0.5% of all wallpapers, with actual impacted user numbers even lower. The core problem, they say, is that executable files simply can't be secured reliably through automated systems — there will always be gaps. "Keeping a feature around that lets anyone easily share random .exe files on the Workshop is a risk we are no longer willing to take," the statement reads. A Securlist report published earlier this month traced the malware back to as far as late 2025, and the payload was serious: hijacked Steam accounts, damaged hard drives, hidden crypto miners, and ransomware capable of encrypting user data.

Wallpaper Engine has been one of Steam's most popular utility tools for nearly a decade, letting users set animated and interactive wallpapers on their desktops. The malware issue isn't isolated to this app — Steam has seen a wave of infected software recently, including the removal of Beyond the Dark last spring over similar concerns. The problem has grown serious enough that the FBI announced an investigation into multiple malware-infected titles on the platform.

With the app feature gone after July 6, users relying on those wallpapers need to act fast. The developers are framing this as a permanent policy shift rather than a temporary fix — executable sharing on the Workshop is simply off the table going forward.