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: 729,722 bytes
File Type: Other
Initial Samples Received Date: 26 Sep 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 does the following:

  • It is used as a component for Backdoor.Win64.DONKDOOR.ZGLH
  • It is a JFIF image file containing a malicious code.
  • It contains a Base64 encoded string which is used to decode the following IP address it connects to:
    • 1 {BLOCKED}.{BLOCKED}.{BLOCKED}.228
      • which redirects to:
        • https://{BLOCKED}070845.hostwindsdns.com

  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

Scan your computer with your Trend Micro product to delete files detected as Backdoor.Win64.DONKDOOR.ZTLH.component. 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 the following Trend Micro Support pages for more information:


Did this description help? Tell us how we did.