Here’s where the confusion comes in. The number "408" might also remind you of the "HTTP 408 Request Timeout," a harmless web error. However, that is a completely different issue related to website communication, not a file on your computer. The malware programmers are banking on this confusion to make their software seem more legitimate.
Once activated, the malware can cause a range of severe issues: error 408.exe download link
Run a quick speed test online to see if your bandwidth is dropping. Here’s where the confusion comes in
System Instability: Running unverified executables can corrupt your registry and make your computer's actual problems much worse. " a harmless web error. However