Windows malicious software removal tool x64 что это



Remove specific prevalent malware with Windows Malicious Software Removal Tool (KB890830)

Summary

The Windows Malicious Software Removal Tool (MSRT) helps remove malicious software from computers that are running any of the following operating systems:

Windows Server 2019

Windows Server 2016

Windows Server 2012 R2

Windows Server 2012

Windows Server 2008 R2

Windows Server 2008

Microsoft releases the MSRT on a monthly cadence as part of Windows Update or as a standalone tool. Use this tool to find and remove specific prevalent threats and reverse the changes they have made (see covered malware families). For comprehensive malware detection and removal, consider using Windows Defender Offline or Microsoft Safety Scanner.

This article contains information about how the tool differs from an antivirus or antimalware product, how you can download and run the tool, what happens when the tool finds malware, and tool release information. It also includes information for the administrators and advanced users, including information about supported command-line switches.

In compliance with the Microsoft Support Lifecycle policy, the MSRT is no longer supported on Windows Vista or earlier platforms. For more information, go to Microsoft Support Lifecycle.

If you are having problems in regards to an MSRT update within Windows Update, see Troubleshooting problems updating Windows 10.

More information

The MSRT does not replace an antivirus product. It is strictly a post-infection removal tool. Therefore, we strongly recommend that you install and use an up-to-date antivirus product.

The MSRT differs from an antivirus product in three important ways:

The tool removes malicious software from an already-infected computer. Antivirus products block malicious software from running on a computer. It is significantly more desirable to block malicious software from running on a computer than to remove it after infection.

The tool removes only specific prevalent malicious software. Specific prevalent malicious software is a small subset of all the malicious software that exists today.

The tool focuses on the detection and removal of active malicious software. Active malicious software is malicious software that is currently running on the computer. The tool cannot remove malicious software that is not running. However, an antivirus product can perform this task.

For more information about how to protect your computer, go to the Microsoft Safety & Security Center website.

Note The MSRT focuses on the detection and removal of malicious software such as viruses, worms, and Trojan horses only. It does not remove spyware.

You do not have to disable or remove your antivirus program when you install the MSRT. However, if prevalent, malicious software has infected your computer, the antivirus program may detect this malicious software and may prevent the removal tool from removing it when the removal tool runs. In this case, you can use your antivirus program to remove the malicious software.

Because the MSRT does not contain a virus or a worm, the removal tool alone should not trigger your antivirus program. However, if malicious software infected the computer before you installed an up-to-date antivirus program, your antivirus program may not detect this malicious software until the tool tries to remove it.

Note: Starting November 2019, MSRT will be SHA-2 signed exclusively. Your devices must be updated to support SHA-2 in order to run MSRT. To learn more, see 2019 SHA-2 Code Signing Support requirement for Windows and WSUS.

The easiest way to download and run the MSRT is to turn on Automatic Updates. Turning on Automatic Updates guarantees that you receive the tool automatically. If you have Automatic Updates turned on, you have already been receiving new versions of this tool. The tool runs in Quiet mode unless it finds an infection. If you have not been notified of an infection, no malicious software has been found that requires your attention.

Enabling automatic updates

To turn on Automatic Updates yourself, follow the steps in the following table for the operating system that your computer is running.

If your computer is running:

Follow these steps:

Select the Start button, then select Settings > Update & security > Windows Update . If you want to check for updates manually, select Check for updates.

Select Advanced options, and then under Choose how updates are installed, select Automatic (recommended).

Note Windows 10 is a service. This means that automatic updates are turned on by default and your PC always has the latest and best features.

Open Windows Update by swiping in from the right edge of the screen (or, if you’re using a mouse, pointing to the lower-right corner of the screen and moving the mouse pointer up), select Settings > Change PC settings > Update and recovery > Windows Update. If you want to check for updates manually, select Check now.

Select Choose how updates get installed, and then under Important updates, select Install updates automatically (recommended).

Under Recommended updates, select the Give me recommended updates the same way I receive important updates check box.

Under Microsoft Update, select the Give me updates for other Microsoft products when I update Windows check box, and then select Apply.

Click Start , point to All Programs, and then click Windows Update.

In the left pane, click Change settings.

Click to select Install updates automatically (recommended).

Under Recommended updates, click to select the Give me recommended updates the same way I receive important updates check box, and then click OK. If you are prompted for an administrative password or for confirmation, type the password or provide confirmation. Go to step 3.

Download the MSRT. You must accept the Microsoft Software License Terms. The license terms are only displayed for the first time that you access Automatic Updates.

Note After you accept the one-time license terms, you can receive future versions of the MSRT without being logged on to the computer as an administrator.

The MSRT runs in Quiet mode. If it detects malicious software on your computer, the next time that you log on to your computer as a computer administrator, a balloon appears in the notification area to make you aware of the detection.

Performing a full scan

If the tool finds malicious software, you may be prompted to perform a full scan. We recommend that you perform this scan. A full scan performs a quick scan and then a full scan of the computer, regardless of whether malicious software is found during the quick scan. This scan can take several hours to complete because it will scan all fixed and removable drives. However, mapped network drives are not scanned.

Removing malicious files

If malicious software has modified (infected) files on your computer, the tool prompts you to remove the malicious software from those files. If the malicious software modified your browser settings, your homepage may be changed automatically to a page that gives you directions on how to restore these settings.

You can clean specific files or all the infected files that the tool finds. Be aware that some data loss is possible during this process. Also, be aware that the tool may be unable to restore some files to the original, pre-infection state.

The removal tool may request that you restart your computer to complete the removal of some malicious software, or it may prompt you to perform manual steps to complete the removal of the malicious software. To complete the removal, you should use an up-to-date antivirus product.

Reporting infection information to Microsoft The MSRT sends basic information to Microsoft if the tool detects malicious software or finds an error. This information will be used for tracking virus prevalence. No identifiable personal information that is related to you or to the computer is sent together with this report.

The MSRT does not use an installer. Typically, when you run the MSRT, it creates a randomly named temporary directory on the root drive of the computer. This directory contains several files, and it includes the Mrtstub.exe file. Most of the time, this folder is automatically deleted after the tool finishes running or after the next time that you start the computer. However, this folder may not always be automatically deleted. In these cases, you can manually delete this folder, and this has no adverse effect on the computer.

How to receive support

Help protect your computer that is running Windows from viruses and malware: Virus Solution and Security Center

Local support according to your country: International Support.

Microsoft Download Center

Note: Starting November 2019, MSRT will be SHA-2 signed exclusively. Your devices must be updated to support SHA-2 in order to run MSRT. To learn more, see 2019 SHA-2 Code Signing Support requirement for Windows and WSUS.

You can manually download the MSRT from the Microsoft Download Center. The following files are available for download from the Microsoft Download Center:

For 32-bit x86-based systems:

Download the x86 MSRT package now.

For 64-bit x64-based systems:

Download the x64 MSRT package now.

Release Date: September 13, 2022.

For more information about how to download Microsoft support files, see How to obtain Microsoft support files from online services.

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Deploying the MSRT in an enterprise environment

If you are an IT administrator who wants more information about how to deploy the tool in an enterprise environment, see Deploy Windows Malicious Software Removal Tool in an enterprise environment.

This article includes information about Microsoft Systems Management Server (SMS), Microsoft Software Update Services (MSUS), and Microsoft Baseline Security Analyzer (MBSA).

Except where noted, the information in this section applies to all the ways that you can download and run the MSRT:

The Microsoft Download Center

The MSRT website on Microsoft.com

To run the MSRT, the following conditions are required:

The computer must be running a supported version of Windows.

You must log on to the computer by using an account that is a member of the Administrators group. If your logon account does not have the required permissions, the tool exits. If the tool is not being run in quiet mode, it displays a dialog box that describes the failure.

If the tool is more than 215 days (7 months) out of date, the tool displays a dialog box that recommends that you download the latest version of the tool.

Support for command-line switches

The MSRT supports the following command line switches.

Uses quiet mode. This option suppresses the user interface of the tool.

Displays a dialog box that lists the command-line switches.

Runs in detect-only mode. In this mode, malicious software will be reported to the user, but it will not be removed.

Forces an extended scan of the computer.

Forces an extended scan of the computer and automatically cleans any infections that are found.

Usage and release information

When you download the tool from Microsoft Update or from Automatic Updates, and no malicious software is detected on the computer, the tool will run in quiet mode next time. If malicious software is detected on the computer, the next time that an administrator logs on to the computer, a balloon will appear in the notification area to notify you of the detection. For more information about the detection, click the balloon.

When you download the tool from the Microsoft Download Center, the tool displays a user interface when it runs. However, if you supply the /Q command-line switch, it runs in quiet mode.

Release information

The MSRT is released on the second Tuesday of each month. Each release of the tool helps detect and remove current, prevalent malicious software. This malicious software includes viruses, worms, and Trojan horses. Microsoft uses several metrics to determine the prevalence of a malicious software family and the damage that can be associated with it.

This Microsoft Knowledge Base article will be updated with information for each release so that the number of the relevant article remains the same. The name of the file will be changed to reflect the tool version. For example, the file name of the February 2020 version is Windows-KB890830-V5.80.exe, and the file name of the May 2020 version is Windows-KB890830-V5.82-ENU.exe.

The following table lists the malicious software that the tool can remove. The tool can also remove any known variants at the time of release. The table also lists the version of the tool that first included detection and removal for the malicious software family.

Источник

Remove specific prevalent malware with Windows Malicious Software Removal Tool (KB890830)

Summary

The Windows Malicious Software Removal Tool (MSRT) helps remove malicious software from computers that are running any of the following operating systems:

Windows Server 2019

Windows Server 2016

Windows Server 2012 R2

Windows Server 2012

Windows Server 2008 R2

Windows Server 2008

Microsoft releases the MSRT on a monthly cadence as part of Windows Update or as a standalone tool. Use this tool to find and remove specific prevalent threats and reverse the changes they have made (see covered malware families). For comprehensive malware detection and removal, consider using Windows Defender Offline or Microsoft Safety Scanner.

This article contains information about how the tool differs from an antivirus or antimalware product, how you can download and run the tool, what happens when the tool finds malware, and tool release information. It also includes information for the administrators and advanced users, including information about supported command-line switches.

In compliance with the Microsoft Support Lifecycle policy, the MSRT is no longer supported on Windows Vista or earlier platforms. For more information, go to Microsoft Support Lifecycle.

If you are having problems in regards to an MSRT update within Windows Update, see Troubleshooting problems updating Windows 10.

More information

The MSRT does not replace an antivirus product. It is strictly a post-infection removal tool. Therefore, we strongly recommend that you install and use an up-to-date antivirus product.

The MSRT differs from an antivirus product in three important ways:

The tool removes malicious software from an already-infected computer. Antivirus products block malicious software from running on a computer. It is significantly more desirable to block malicious software from running on a computer than to remove it after infection.

The tool removes only specific prevalent malicious software. Specific prevalent malicious software is a small subset of all the malicious software that exists today.

The tool focuses on the detection and removal of active malicious software. Active malicious software is malicious software that is currently running on the computer. The tool cannot remove malicious software that is not running. However, an antivirus product can perform this task.

For more information about how to protect your computer, go to the Microsoft Safety & Security Center website.

Note The MSRT focuses on the detection and removal of malicious software such as viruses, worms, and Trojan horses only. It does not remove spyware.

You do not have to disable or remove your antivirus program when you install the MSRT. However, if prevalent, malicious software has infected your computer, the antivirus program may detect this malicious software and may prevent the removal tool from removing it when the removal tool runs. In this case, you can use your antivirus program to remove the malicious software.

Because the MSRT does not contain a virus or a worm, the removal tool alone should not trigger your antivirus program. However, if malicious software infected the computer before you installed an up-to-date antivirus program, your antivirus program may not detect this malicious software until the tool tries to remove it.

Note: Starting November 2019, MSRT will be SHA-2 signed exclusively. Your devices must be updated to support SHA-2 in order to run MSRT. To learn more, see 2019 SHA-2 Code Signing Support requirement for Windows and WSUS.

The easiest way to download and run the MSRT is to turn on Automatic Updates. Turning on Automatic Updates guarantees that you receive the tool automatically. If you have Automatic Updates turned on, you have already been receiving new versions of this tool. The tool runs in Quiet mode unless it finds an infection. If you have not been notified of an infection, no malicious software has been found that requires your attention.

Enabling automatic updates

To turn on Automatic Updates yourself, follow the steps in the following table for the operating system that your computer is running.

If your computer is running:

Follow these steps:

Select the Start button, then select Settings > Update & security > Windows Update . If you want to check for updates manually, select Check for updates.

Select Advanced options, and then under Choose how updates are installed, select Automatic (recommended).

Note Windows 10 is a service. This means that automatic updates are turned on by default and your PC always has the latest and best features.

Open Windows Update by swiping in from the right edge of the screen (or, if you’re using a mouse, pointing to the lower-right corner of the screen and moving the mouse pointer up), select Settings > Change PC settings > Update and recovery > Windows Update. If you want to check for updates manually, select Check now.

Select Choose how updates get installed, and then under Important updates, select Install updates automatically (recommended).

Under Recommended updates, select the Give me recommended updates the same way I receive important updates check box.

Under Microsoft Update, select the Give me updates for other Microsoft products when I update Windows check box, and then select Apply.

Click Start , point to All Programs, and then click Windows Update.

In the left pane, click Change settings.

Click to select Install updates automatically (recommended).

Under Recommended updates, click to select the Give me recommended updates the same way I receive important updates check box, and then click OK. If you are prompted for an administrative password or for confirmation, type the password or provide confirmation. Go to step 3.

Download the MSRT. You must accept the Microsoft Software License Terms. The license terms are only displayed for the first time that you access Automatic Updates.

Note After you accept the one-time license terms, you can receive future versions of the MSRT without being logged on to the computer as an administrator.

The MSRT runs in Quiet mode. If it detects malicious software on your computer, the next time that you log on to your computer as a computer administrator, a balloon appears in the notification area to make you aware of the detection.

Performing a full scan

If the tool finds malicious software, you may be prompted to perform a full scan. We recommend that you perform this scan. A full scan performs a quick scan and then a full scan of the computer, regardless of whether malicious software is found during the quick scan. This scan can take several hours to complete because it will scan all fixed and removable drives. However, mapped network drives are not scanned.

Removing malicious files

If malicious software has modified (infected) files on your computer, the tool prompts you to remove the malicious software from those files. If the malicious software modified your browser settings, your homepage may be changed automatically to a page that gives you directions on how to restore these settings.

You can clean specific files or all the infected files that the tool finds. Be aware that some data loss is possible during this process. Also, be aware that the tool may be unable to restore some files to the original, pre-infection state.

The removal tool may request that you restart your computer to complete the removal of some malicious software, or it may prompt you to perform manual steps to complete the removal of the malicious software. To complete the removal, you should use an up-to-date antivirus product.

Reporting infection information to Microsoft The MSRT sends basic information to Microsoft if the tool detects malicious software or finds an error. This information will be used for tracking virus prevalence. No identifiable personal information that is related to you or to the computer is sent together with this report.

The MSRT does not use an installer. Typically, when you run the MSRT, it creates a randomly named temporary directory on the root drive of the computer. This directory contains several files, and it includes the Mrtstub.exe file. Most of the time, this folder is automatically deleted after the tool finishes running or after the next time that you start the computer. However, this folder may not always be automatically deleted. In these cases, you can manually delete this folder, and this has no adverse effect on the computer.

How to receive support

Help protect your computer that is running Windows from viruses and malware: Virus Solution and Security Center

Local support according to your country: International Support.

Microsoft Download Center

Note: Starting November 2019, MSRT will be SHA-2 signed exclusively. Your devices must be updated to support SHA-2 in order to run MSRT. To learn more, see 2019 SHA-2 Code Signing Support requirement for Windows and WSUS.

You can manually download the MSRT from the Microsoft Download Center. The following files are available for download from the Microsoft Download Center:

For 32-bit x86-based systems:

Download the x86 MSRT package now.

For 64-bit x64-based systems:

Download the x64 MSRT package now.

Release Date: September 13, 2022.

For more information about how to download Microsoft support files, see How to obtain Microsoft support files from online services.

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Deploying the MSRT in an enterprise environment

If you are an IT administrator who wants more information about how to deploy the tool in an enterprise environment, see Deploy Windows Malicious Software Removal Tool in an enterprise environment.

This article includes information about Microsoft Systems Management Server (SMS), Microsoft Software Update Services (MSUS), and Microsoft Baseline Security Analyzer (MBSA).

Except where noted, the information in this section applies to all the ways that you can download and run the MSRT:

The Microsoft Download Center

The MSRT website on Microsoft.com

To run the MSRT, the following conditions are required:

The computer must be running a supported version of Windows.

You must log on to the computer by using an account that is a member of the Administrators group. If your logon account does not have the required permissions, the tool exits. If the tool is not being run in quiet mode, it displays a dialog box that describes the failure.

If the tool is more than 215 days (7 months) out of date, the tool displays a dialog box that recommends that you download the latest version of the tool.

Support for command-line switches

The MSRT supports the following command line switches.

Uses quiet mode. This option suppresses the user interface of the tool.

Displays a dialog box that lists the command-line switches.

Runs in detect-only mode. In this mode, malicious software will be reported to the user, but it will not be removed.

Forces an extended scan of the computer.

Forces an extended scan of the computer and automatically cleans any infections that are found.

Usage and release information

When you download the tool from Microsoft Update or from Automatic Updates, and no malicious software is detected on the computer, the tool will run in quiet mode next time. If malicious software is detected on the computer, the next time that an administrator logs on to the computer, a balloon will appear in the notification area to notify you of the detection. For more information about the detection, click the balloon.

When you download the tool from the Microsoft Download Center, the tool displays a user interface when it runs. However, if you supply the /Q command-line switch, it runs in quiet mode.

Release information

The MSRT is released on the second Tuesday of each month. Each release of the tool helps detect and remove current, prevalent malicious software. This malicious software includes viruses, worms, and Trojan horses. Microsoft uses several metrics to determine the prevalence of a malicious software family and the damage that can be associated with it.

This Microsoft Knowledge Base article will be updated with information for each release so that the number of the relevant article remains the same. The name of the file will be changed to reflect the tool version. For example, the file name of the February 2020 version is Windows-KB890830-V5.80.exe, and the file name of the May 2020 version is Windows-KB890830-V5.82-ENU.exe.

The following table lists the malicious software that the tool can remove. The tool can also remove any known variants at the time of release. The table also lists the version of the tool that first included detection and removal for the malicious software family.

Источник

You may also like...

Adblock
detector