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Trojan.Win64.BRUTEL.NLJ

September 20, 2024
 Analysis by: Neljorn Nathaniel Aguas
 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware


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

It connects to certain websites to send and receive information. However, as of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size:

976,896 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

19 Jun 2024

Payload:

Connects to URLs/IPs

Arrival Details

This Trojan 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 Trojan connects to the following website to send and receive information:

  • {BLOCKED}ate.com:443
    • which redirects to:
      • {BLOCKED}.{BLOCKED}.{BLOCKED}.31:443

It does the following:

  • It leverages DLL hijacking to execute its shellcode into the following file:
    • %System%\chakra.dll

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

However, as of this writing, the said sites are inaccessible.

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

19.600.06

FIRST VSAPI PATTERN DATE:

19 Sep 2024

VSAPI OPR PATTERN File:

19.601.00

VSAPI OPR PATTERN Date:

20 Sep 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 Trojan.Win64.BRUTEL.NLJ. 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:


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