vmhost.exe - by Square Network Tech Co.,LTD.
What is vmhost.exe?
Vmhost.exe is adware that plays audio ads in the background and may also display pop-up ads. The program doesn't start immediately when you turn on your computer. It starts 3-5 minutes later in Program Data\Update Task folder and may be also listed as VM file module. I takes up at least 100k memory and may crash your web browser. Multiple anti-virus engines have detected malware in this file, here are a few of the most frequently detection: Riskware.Agent!, Adware.Downware.4176, Win32/SquareNet.B and PUP.OPTIONAL.VMHOST.A. It's distributed mainly in the United States using various pay-per-install networks which means that there's a great chance that some other adware and PUP could have been installed with vmhost.exe on your computer. You can remove the file manually but I it would be a good idea to run a full system scan with recommended anti-malware software too. Needles to say, it's not essential for Windows and may cause lots of problems including annoying audio ads and system crashes.
File name: vmhost.exe
Publisher: Square Network Tech Co.,LTD.
File Location Windows XP: C:\Documents and Settings\All Users\Application Data\UpdateTask\
File Location Windows 7: C:\ProgramData\UpdateTask\
Startup file: HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run → vmhost.exe
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