Analysis by: Leidryn Saludez
 ALIASES:

Trojan:MSIL/LummaStealer!rfn (MICROSOFT)

 PLATFORM:

Windows

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

  • Threat Type: Trojan Spy

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Canal de infecção: Downloaded from the Internet, Dropped by other malware

This Trojan Spy 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.

  TECHNICAL DETAILS

Tipo de compactação: 1,405,440 bytes
Tipo de arquivo: EXE
Data de recebimento das amostras iniciais: 27 Jan 2025
Carga útil: Collects system information, Connects to URLs/IPs

Arrival Details

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

Information Theft

This Trojan Spy gathers the following data:

  • Computer Name
  • OS Information
  • CPU Information
  • Screen Resolution
  • System Language
  • Physical Memory Installed

Stolen Information

This Trojan Spy sends the gathered information via HTTP POST to the following URL:

  • https://{BLOCKED}tedusz.cyou/api

Other Details

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

  • https://{BLOCKED}ob.shop/int_clp_8888.txt

It does the following:

  • It bypasses the Antimalware Scan Interface (AMSI).
  • It exfiltrates crypto currency browser wallet extensions and 2FA applications.
  • It compiles and compresses the stolen information in memory before sending it to the C&C server.

  SOLUTION

Mecanismo de varredura mínima: 9.800
Primeiro arquivo padrão VSAPI: 19.866.03
Data do lançamento do primeiro padrão VSAPI: 28 Jan 2025
VSAPI OPR Pattern Version: 19.867.00
VSAPI OPR Pattern veröffentlicht am: 29 Jan 2025

Step 1

Trend Micro Predictive Machine Learning detects and blocks malware at the first sign of its existence, before it executes on your system. When enabled, your Trend Micro product detects this malware under the following machine learning name:

     TROJ.Win32.TRX.XXPE50FFF090

Step 2

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 3

Scan your computer with your Trend Micro product to delete files detected as TrojanSpy.MSIL.LUMMASTEALER.THABHBE. 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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