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Backdoor.Win64.DONKDOOR.ZGLH

September 30, 2024
 Analysis by: Neljorn Nathaniel Aguas
 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware


This Backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size:

2,360,832 bytes

File Type:

EXE

Initial Samples Received Date:

29 Aug 2024

Payload:

Connects to URLs/IPs

Arrival Details

This Backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Other Details

This Backdoor connects to the following possibly malicious URL:

  • {BLOCKED}.{BLOCKED}.{BLOCKED}.228
    • which redirects to:
      • https://{BLOCKED}070845.hostwindsdns.com

It requires the following additional components to properly run:

It does the following:

  • It requires being executed as a service with the following service name:
    • DevicePropertiesService
  • It hooks into an API to do the following:
    • monitor mouse messages
    • monitor dialog box, message box, menu, and scroll bar input event messages
    • receive notifications useful to a CBT application

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

19.556.04

FIRST VSAPI PATTERN DATE:

28 Aug 2024

VSAPI OPR PATTERN File:

19.557.00

VSAPI OPR PATTERN Date:

29 Aug 2024

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.

Step 2

Restart in Safe Mode, and then delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\DevicePropertiesService

Step 3

Restart in normal mode and scan your computer with your Trend Micro product for files detected as Backdoor.Win64.DONKDOOR.ZGLH. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


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