I recommend you UnHackMe - Ultimate Malware Killer for fast malware removal:
Free Download Fully Functional 30-day Trial. No credit card is required.
Reviews. EULA. Privacy Policy. Uninstall.
We checked some samples of Arquivo2.exe and detected the file Arquivo2.exe as threat.
Remove the Arquivo2.exe from your computer right now.
Removal tool: http://www.unhackme.com