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TrojanSpy.Win64.LUMMAC.B.go

July 30, 2024
 Analysis by: Raymart Christian Yambot
 Modified by: Raighen Sanchez
 ALIASES:

Trojan:Win32/LummaStealer.MWW!MTB (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

Infection Channel:

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 a website to send and receive information.

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

  TECHNICAL DETAILS

File Size:

23,507,456 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

09 Jul 2024

Payload:

Connects to URLs/IPs, Drops files, Steals information

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.

Installation

This Trojan Spy drops the following files:

  • %Public%\Libraries\{random}.scif → original content of BitLockerToGo.exe
  • %Public%\Libraries\{random}.scif → malicious executable code of LUMMAC, deleted afterwards

(Note: %Public% is the folder that serves as a repository of files or folders common to all users, which is usually C:\Users\Public in Windows Vista, 7, and 8.)

Backdoor Routine

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

  • {BLOCKED}acutwo.shop
  • {BLOCKED}gowp.shop
  • {BLOCKED}wko.shop
  • {BLOCKED}nykwo.shop
  • {BLOCKED}orsedpo.shop
  • {BLOCKED}onnopp.shop
  • {BLOCKED}rsdo.shop
  • {BLOCKED}itttyps.shop
  • {BLOCKED}llppwo.shop
  • {BLOCKED}ommunity.com

Other Details

This Trojan Spy does the following:

  • It copies the original content of the legitimate file BitLockerToGo.exe to %Public%\Libraries\{random}.scif.
  • It injects its malicious executable code in the legitimate file BitLockerToGo.exe.
  • It steals information from the following:
    • Cryptocurrency:
      • Electrum
      • Ethereum
      • Exodus
      • Ledger Live
      • Atomic
      • Coinomi
      • Authy Desktop
      • Bitcoin
      • Binance
    • FTP and Remote Desktop Clients:
      • AnyDesk
      • FileZilla
    • Messaging Applications:
      • Telegram
    • Web Browsers:
      • Brave
      • Epic Privacy
      • Vivaldi
      • 360 Browser
      • CocCoc
    • Email Client:
      • PMAIL
      • Mailbird
      • eM Client
    • Filenames:
      • seed.txt
      • pass.txt
      • ledger.txt
      • trezor.txt
      • metamask.txt
      • bitcoin.txt
      • words
      • wallet.txt
      • *.txt
      • *.pdf

(Note: %Public% is the folder that serves as a repository of files or folders common to all users, which is usually C:\Users\Public in Windows Vista, 7, and 8.)

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

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

19.456.05

FIRST VSAPI PATTERN DATE:

09 Jul 2024

VSAPI OPR PATTERN File:

19.457.00

VSAPI OPR PATTERN Date:

10 Jul 2024

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.XXPE50FFF083

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

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 4

Search and delete this file

[ Learn More ]
There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %Public%\Libraries\{random}.scif

Step 5

Scan your computer with your Trend Micro product to delete files detected as TrojanSpy.Win64.LUMMAC.B.go. 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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