DC's braviax screen shots

Thank you very much, Microsoft Windows Malicious Software Removal Tool!
I suppose optimism is a virtue.

If cru629.dat exists on your system you will typically find this registry entry.

A typical braviax registry key causing it to run upon start up.

Search results for recently modified dat files. Two instances of cru629.

Deleting beep.sys from the command prompt.
Note the size of beep.sys which is typically 4224 bytes.

Contents of delself.bat. Malware related?