Document.exe is a malicious program that is also detected as worm W32.Shima-A. It is a mass-mailing worm infection that attempt to disrupt the functioning of installed security applications and initiate harmful tasks on it. Document.exe silently monitors individual’s online activities, collect important data and system related information. The collected data is then send to remote hackers through establishing remote connection. Document.exe program is nowhere associated with any legitimate process and is not an essential part of your windows PC. Thus, if you are noticing Document.exe within the task manager and facing performance issues then quickly kill Document.exe process from the running thread and delete start-up entries. And then immediately run a powerful scan to your PC and remove Document.exe completely from the compromised PC.