I'm worried that a Windows game installer may have contained malware. I ran it on Linux through Q4Wine, and the installation stopped after displaying an unusual error message in Russian. I didn't run the installer with sudo, although I did use sudo separately for tasks such as installing ClamAV. Since then, I changed my passwords and signed out other devices from a trusted computer, checked my router, reinstalled Debian while deleting the existing partitions, and wiped my secondary drives. I left the current operating-system drive in place rather than manually wiping it. Is my system likely safe, and is there anything specific I should check in the BIOS or firmware?
3 Answers
Most Windows malware is designed to run on Windows, not Linux through Wine. Wine generally keeps Windows programs inside files and folders under your home directory, so the likely worst case would be damage to that Wine prefix or your user files—not the BIOS. Removing and recreating the Wine environment is a reasonable precaution.
Reinstalling Debian and deleting the partitions removes ordinary malware from the affected operating-system installation. Since you also changed passwords and reviewed your other devices and router, you’ve already taken sensible precautions. For future checks, make sure the system is fully updated, review unusual startup services and user files, and only use software from sources you trust.
A BIOS infection is extraordinarily unlikely, especially from a program run through Wine without administrator privileges. Firmware malware is highly specialized, and tampering with the BIOS would often make the system fail to boot rather than quietly cause a normal-looking error. If you want extra reassurance, compare your firmware version with the one on your computer or motherboard manufacturer’s website and install the official update if appropriate.
The Russian message by itself isn’t evidence of an infection. Installers can contain untranslated error strings or display unexpected language text when they fail.