We're gradually updating threat actor names in our reports to align with the new weather-themed taxonomy. Learn about Microsoft threat actor names
Trojan:JS/Qhost.C
Aliases: No associated aliases
Summary
Trojan:JS/Qhost.C is a JavaScript trojan that modifies the computer's Hosts file to redirect visits to certain websites. The browser is instead redirected to a specific website.
To detect and remove this threat and other malicious software that may be installed on your computer, run a full-system scan with an appropriate, up-to-date, security solution. The following Microsoft products detect and remove this threat:
For more information on antivirus software, see http://www.microsoft.com/windows/antivirus-partners/.
Additional remediation instructions for Trojan:JS/Qhost.C
This threat may make lasting changes to a computer's configuration that are NOT restored by detecting and removing this threat. For more information on returning an infected computer to its pre-infected state, please see the following article/s:
- Changing your Internet Explorer Home Page:
- For Windows 7: http://windows.microsoft.com/en-us/windows7/Change-your-Internet-Explorer-home-page
- For Internet Explorer 7 and 8 in Windows Vista: http://windows.microsoft.com/en-US/windows-vista/Change-your-Internet-Explorer-home-page
- For Internet Explorer 6: http://support.microsoft.com/kb/252464
- Recreating a clean Hosts file: http://support.microsoft.com/kb/972034
- For other support and help related articles, go to:
- Windows 7: http://support.microsoft.com/gp/windows7
- Windows Vista: http://support.microsoft.com/ph/11732
- Windows XP: http://support.microsoft.com/ph/1173
- Microsoft Security TechNet Center: http://technet.microsoft.com/security/default.aspx