Threat Database Trojans Trojan.MSIL.Lumma.J

Trojan.MSIL.Lumma.J

By CagedTech in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 5
First Seen: December 18, 2024
Last Seen: April 11, 2026
OS(es) Affected: Windows

The detection of Trojan.MSIL.Lumma.J on your system indicates a potential security threat that requires immediate attention. This report provides an overview of the threat, its operational characteristics, symptoms of infection, and a step-by-step guide on how to remove it from your computer.

What Is Trojan.MSIL.Lumma.J?

Trojan.MSIL.Lumma.J is a type of malware that can compromise the security and integrity of your computer system. The name suggests it is a Trojan-type threat, which typically disguises itself as legitimate software to gain unauthorized access to a computer. Trojans can be used to steal sensitive information, install additional malware, or provide a backdoor for remote access by an attacker.

How Trojan.MSIL.Lumma.J Operates

Trojan.MSIL.Lumma.J, like other Trojans, operates by deceiving users into installing it on their systems. This can happen through various means, such as downloading and executing malicious files from the internet, opening malicious email attachments, or visiting compromised websites. Once installed, it can perform a variety of malicious activities, depending on its design and the intentions of its creators. This can include data theft, spyware activities, or the installation of additional malware.

Symptoms of Infection

Symptoms of a Trojan infection can vary widely, depending on the specific actions the malware is designed to perform. Common indicators of a Trojan infection include unexpected changes to computer settings, unusual network activity, slowed system performance, and the appearance of unwanted programs or files. In some cases, the infection may not exhibit noticeable symptoms, making it difficult to detect without the use of security software.

How to Remove Trojan.MSIL.Lumma.J

  1. Enter Safe Mode with Networking to prevent the malware from interfering with the removal process. This mode allows you to use the internet to download removal tools while limiting the ability of the malware to operate.
  2. Download and run a full scan with a reputable anti-malware tool, such as SpyHunter. Ensure the tool is updated with the latest definitions to improve the chances of detecting and removing the threat.
  3. Uninstall suspicious programs that you do not recognize or that were installed around the time the malware was detected. Be cautious and only uninstall programs you are certain are not needed.
  4. Reset your web browsers, such as Chrome, Firefox, or Edge, to their default settings. This can help remove any malicious extensions or settings changes made by the malware.
  5. After completing the above steps, reboot your computer and perform another full scan with your anti-malware tool to ensure that all components of the malware have been removed.

Conclusion

The removal of Trojan.MSIL.Lumma.J requires careful and immediate action to prevent further damage to your computer and to protect your personal data. By following the steps outlined in this report and maintaining good security practices, such as regularly updating your operating system and security software, using strong antivirus programs, and being cautious when downloading and installing software from the internet, you can significantly reduce the risk of future infections. Remember, prevention and vigilance are key to protecting your digital security.

Analysis Report

General information

Family Name: Trojan.MSIL.Lumma.J
Signature status: No Signature

Known Samples

MD5: 99138122c12efbb499e6b76bd91e107f
SHA1: 286786b0708bf08e0d192374276f6b791170b5e8
SHA256: A61525F9B5B24572111616AC596CCDE037EC91FB8225C21ACDFD8B96C3892554
File Size: 637.44 KB, 637440 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have debug information
  • File doesn't have exports table
  • File doesn't have security information
  • File is .NET application
  • File is 32-bit executable
  • File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
  • File is either console or GUI application
  • File is not packed
  • IMAGE_FILE_DLL is not set inside PE header (Executable)
Show More
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

Windows PE Version Information

Name Value
Assembly Version 4.0.0.0
Comments MSBuild.exe
Company Name Microsoft Corporation
File Description MSBuild.exe
File Version 4.8.9037.0
Internal Name QuinnLiamChloe.exeOjX
Legal Copyright © Microsoft Corporation. All rights reserved.
Original Filename QuinnLiamChloe.exeOjX
Product Name Microsoft® .NET Framework
Product Version 4.8.9037.0

File Traits

  • .NET
  • HighEntropy
  • x86

Block Information

Total Blocks: 29
Potentially Malicious Blocks: 15
Whitelisted Blocks: 14
Unknown Blocks: 0

Visual Map

0 x x 0 0 x 0 x 0 0 x x x x x 0 0 x x 0 0 0 0 0 x x x 0 x
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Similar Families

  • MSIL.Lumma.J

Files Modified

File Attributes
c:\users\user\appdata\roaming\gdi32.dll Generic Write,Read Attributes
c:\users\user\appdata\roaming\gdi32.dll Synchronize,Write Attributes

Windows API Usage

Category API
User Data Access
  • GetComputerNameEx
  • GetUserDefaultLocaleName
  • GetUserObjectInformation

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