Backdoor.Rietspoof

Short bio

Backdoor.Rietspoof is Malwarebytes’ detection name for a family of Trojans that enable threat actors to gain remote access and control over an affected Windows system.

Synmptoms

Backdoor.Rietspoof gains persistence by creating a link in the Windows startup folder pointing to the backdoor process.

Type and source of infection

Backdoor.Rietspoof is a multi-staged malware delivery system that can be used to drop virtually any malware on an affected system. Backdoor.Rietspoof’s first stage is typicsally delivered by instant messaging software clients.

Protection

Malwarebytes blocks Backdoor.Rietspoof

Remediation

Malwarebytes can detect and remove Backdoor.Rietspoof 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.

A full system scan is recommended as Backdoor.Rietspoof is typically used as a method to introduce more malware on infected systems. If the system is connected to a network other systems on the network may also have been compromised.

Traces/IOCs

Files:

%appdata%roamingMicrosoftWindowsStart MenuProgramsStartupWindowsUpdate.lnk

%appdata%roamingMicrosoftWindowsCookieswordTemplate.vbs