Short bio

Backdoor.AveMaria is Malwarebytes’ detection name for a large family of Remote Access Trojans (RATs) targeting Windows systems.

Type and source of infection

Remote Access Trojans are programs that provide the capability to allow covert surveillance or the ability to gain unauthorized access to a victim PC. Backdoor.AveMaria is a Remote Access Trojan with the abilities to provide remote desktop access, act as a keylogger, escalate user privileges, steal passwords, and more.
Backdoor.AveMaria usually arrives at system as a result of phishing mails, but the RAT is available as a subscription on the dark web.


  • Data/information about the system may have been stolen
  • User credentials may have been stolen
  • Affected system may be susceptible to further attacks and/or infection due to a backdoor that was opened


Malwarebytes protects users from Backdoor.AveMaria by using real-time protection.

block Backdoor.AveMaria

Malwarebytes blocks Backdoor.AveMaria

Business remediation

To remove Backdoor.AveMaria using Malwarebytes business products, follow the instructions below.

How to remove Backdoor.AveMaria with Malwarebytes Endpoint Protection

  1. Go to the Malwarebytes Cloud console.
  2. To allow you to invoke a scan while the machine is off the network, go to Settings > Policies > your policy > General.
  3. Under Endpoint Interface Options, turn ON:
    1. Show Malwarebytes icon in notification area
    2. Allow users to run a Threat Scan (all threats will be quarantined automatically)
  4. Temporarily enable Anti-Rootkit scanning for all invoked threat scans.
    Go to Settings > Policies > your policy > Endpoint Protection > Scan Options
  5. Set Scan Rootkits to ON.
    MBEP prepare scan
  6. Once the endpoint has been updated with the latest policy changes:
    1. Take the client off the network
    2. From the system tray icon, run an Anti-Rootkit threat scan.
      MBEP start scan

If you have infected machines that are not registered endpoints in Malwarebytes Endpoint Protection, you can remove Backdoor.AveMaria with our Breach Remediation tool (MBBR).

  1. Log into your My Account page and copy your license key. The key is needed to activate MBBR tool.
  2. Open your Cloud console.
  3. From a clean and safe machine, go to Endpoints > Add > Malwarebytes Breach Remediation. This will download the MBBR zip package.
  4. Unzip the package.
  5. Access a Windows command line prompt and issue the following commands:
    mbbr register –key:<prodkey>
    mbbr update
    Note: You must substitute your license key for <prodkey>.
  6. Copy the MBBR folder to a flash drive.
  7. From an infected, offline machine, copy the MBBR folder from the flash drive.
  8. Start a scan using the following command:
    mbbr scan –full –ark –remove –noreboot
  9. Refer to the Malwarebytes Breach Remediation Windows Administrator Guide for all supported scanning commands.

How to remove Backdoor.AveMaria with Malwarebytes Endpoint Security

You can use Malwarebytes Anti-Malware v1.80, which is included in your Malwarebytes Endpoint Security deployment to scan and remove Backdoor.AveMaria.

Option 1
  1. Remove the infected endpoint from the network.
  2. On the infected machine, right click the system tray icon and click on Start Scanner.
    MBES start scanner
  3. Select Perform full scan.
    MBES scan options
  4. Click on Scan button.
Option 2
  1. Open CMD
  2. CD to C:\Program Files (x86)\Malwarebytes’ Anti-Malware
  3. Run mbamapi /scan –full –remove -reboot

It is recommended to follow the MBAM scan with an Anti-Rootkit (MBAR) tool scan.

  1. From a safe computer, download the Anti-Rootkit tool.
    For detailed instructions, refer to the KB article How do I use Malwarebytes Anti-Rookit?
  2. Once Anti-Rootkit is updated (steps 1 – 4), copy it to a flash drive.
  3. Go to an infected machine that has been scanned/cleaned with Anti-Malware and is still off the network.
  4. Copy the Anti-Rootkit files from the flash drive to the machine.
  5. Turn off Anti-Malware. Right click the Anti-Malware system tray icon and select Exit.
  6. Run the Anti-Rootkit program to scan for threats. Refer to How do I use Malwarebytes Anti-Rookit? steps 5 – 12 for instructions.

Home remediation

Malwarebytes can detect and remove {detection name} without further user interaction.

  1. Please download Malwarebytes to your desktop.
  2. Double-click MBSetup.exe and follow the prompts to install the program.
  3. When your Malwarebytes for Windows installation completes, the program opens to the Welcome to Malwarebytes screen.
  4. Click on the Get started button.
  5. Click Scan to start a Threat Scan.
  6. Click Quarantine to remove the found threats.
  7. Reboot the system if prompted to complete the removal process.

Associated threats

  • Spyware.AveMaria
  • Trojan.AveMaria

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