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Published Jun 01, 2017 | Updated Sep 22, 2017

Backdoor:Win32/Aybo.B

Detected by Microsoft Defender Antivirus

Aliases: WORM_AYBO.A (Trend Micro)

Summary

Microsoft Defender Antivirus detects and removes this threat.

The threat is a backdoor trojan that sends information about your PC to a remote server.

It enables a registry entry and scheduled task to ensure it is run at every start up, and modifies the firewall to allow and block certain connections that make it easier for it to contact the remote server.

Find out ways that malware can get on your PC.  

 
 

Use the following free Microsoft software to detect and remove this threat:

You should also run a full scan. A full scan might find hidden malware.

Remove program exceptions in the firewall

This threat might add itself to your Windows Firewall exception list. This means it can go online without being blocked. To remove it from the exception list, do the following:

For Windows 10:

  1. In the search box, enter Windows Firewall, and then select Windows Firewall Control Panel.
  2. In the left pane, tap or click Allow an app or feature through Windows Firewall.
  3. Tap or click Change settings. You might be asked for an admin password or to confirm your choice.
  4. Select the check box next to the app you want to allow, select the network types you want to allow communication on, and then click OK.

For Windows 8.1:

  1. Open Windows Firewall by swiping in from the right edge of the screen, tapping Search (or if you're using a mouse, pointing to the upper-right corner of the screen, moving the mouse pointer down, and then clicking Search), entering firewall in the search box, tapping or clicking Settings, and then tapping or clicking Windows Firewall.
  2. In the left pane, tap or click Allow an app or feature through Windows Firewall.
  3. Tap or click Change settings. You might be asked for an admin password or to confirm your choice.
  4. Select the check box next to the app you want to allow, select the network types you want to allow communication on, and then click OK.

For Windows 7:

  1. Click Start, select Control Panel, then System and Security.
  2. Select Windows Firewall.
  3. On the menu on the left, select Allow a program through Windows Firewall. If you're prompted, type the password or provide confirmation.
  4. Click Change Settings. If you're prompted, type the password or provide confirmation.
  5. Select <program name> from the list of allowed programs and features. Click Remove.
  6. Click OK.
Get more help

You can also visit our advanced troubleshooting page or search the Microsoft virus and malware community for more help.

If you’re using Windows XP, see our Windows XP end of support page.

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