I can provide more specific removal instructions if you know the exact symptoms.
: Look at "Logged in devices" in your Google/Apple accounts and sign out of any unrecognized sessions. To help you further, could you tell me: Did you already run the file, or just download it? payloadapk.exe
: It combines .apk (Android) and .exe (Windows). This is a trick to make users think they are downloading an Android app installer for their PC. I can provide more specific removal instructions if