I have a 32-bit XP SP3 computer here (yes, they actually still exist) and it’s acting all weird. The WiseCare installer doesn’t run. Window complains falsely that it’s not a valid Win32 application. When I try to run the BIOS updater for this computer (a Dell Optiplex 745), Window claims a “Program Payload Error”. When I try to run the installer for CCleaner, it starts and then quits. Finally, when I try to run Malwarebytes (legacy version), it gives the error in the title, so it’s crossed my mind that the system could be infected. Tweaking.com did, however, run fine.
I’m attaching a FRST scan log.
FRST.txt