Do not run the original .exe on a modern Windows machine without sandboxing. The packet injector hooks can confuse network stacks.

It arrived not as an email, not as a push notification, but as a flicker. A single .exe file, squatting in a shared drive labeled "Squad_Backup_2004." No timestamp. No author. Just the name: .

If you have already downloaded or run SquadMailer200EXE , take these steps immediately: