Win32/Koutodoor

Detected by Microsoft Defender Antivirus

Aliases: No associated aliases

Summary

Win32/Koutodoor is a malware family that is capable of changing the Internet Explorer home page and downloading arbitrary files from certain servers. It can also open certain webpages using Internet Explorer.

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:

Microsoft Security Essentials
Microsoft Safety Scanner

For more information on antivirus software, see http://www.microsoft.com/windows/antivirus-partners/.

Win32/Koutodoor

Summary

What to do now

Technical information

Threat behavior

Installation

Payload

Prevention

Take the following steps to help prevent infection on your computer:

Enable a firewall on your computer

Get the latest computer updates

Use up-to-date antivirus software

Limit user privileges on the computer

Use caution when opening attachments and accepting file transfers

Use caution when clicking on links to webpages

Avoid downloading pirated software

Protect yourself from social engineering attacks

Use strong passwords

Symptoms

System changes