Threat Database Trojans Trojan.MSIL.BypassUAC.LC

Trojan.MSIL.BypassUAC.LC

By CagedTech in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 3
First Seen: October 29, 2025
Last Seen: February 18, 2026
OS(es) Affected: Windows

The detection of Trojan.MSIL.BypassUAC.LC indicates that a potentially malicious program has been identified on your system. This name suggests a type of Trojan horse malware that attempts to bypass User Account Control (UAC) on Windows systems, which are designed to prompt users for permission before allowing programs to make changes to the system. Understanding what this threat is and how it operates is crucial for effective removal and prevention of future infections.

What Is Trojan.MSIL.BypassUAC.LC?

Trojan.MSIL.BypassUAC.LC is categorized as a Trojan-type threat, which means it is a malicious program designed to grant unauthorized access to a computer system. The "MSIL" part of the name refers to Microsoft Intermediate Language, suggesting that the malware is written in a .NET language and is executed by the .NET Common Language Runtime (CLR). The "BypassUAC" part indicates its ability to evade the Windows User Account Control, potentially allowing it to perform malicious actions without prompting the user for elevated permissions.

How Trojan.MSIL.BypassUAC.LC Operates

Malware like Trojan.MSIL.BypassUAC.LC typically operates by exploiting vulnerabilities in the system or by tricking users into executing the malicious code. Once inside, it can perform a variety of malicious actions, including but not limited to, stealing sensitive information, installing additional malware, or providing backdoor access to the attackers. The specific actions of Trojan.MSIL.BypassUAC.LC can vary, but its primary goal is to compromise the security of the infected system without being detected.

Symptoms of Infection

Symptoms of an infection can be subtle and may not always be immediately apparent. Common indicators include unusual system behavior, such as unexpected pop-ups, slow system performance, or unfamiliar programs installed on the system. In some cases, the malware may cause no noticeable symptoms at all, making it difficult for users to detect without the aid of security software.

  • Unexplained changes to system settings or files
  • Appearance of unfamiliar programs or icons
  • Increased network activity without a known cause
  • System crashes or instability

How to Remove Trojan.MSIL.BypassUAC.LC

  1. Boot your computer in Safe Mode with Networking to limit the malware's ability to interfere with the removal process.
  2. Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter, to detect and remove all traces of the malware.
  3. Uninstall any suspicious programs that were installed around the time of the infection. Be cautious and only remove programs you are certain are malicious or unnecessary.
  4. Reset your web browsers (Chrome, Firefox, Edge, etc.) to their default settings to remove any malicious extensions or settings changes made by the malware.
  5. Reboot your system and perform another scan with your anti-malware tool to ensure that all components of the malware have been removed.

Conclusion

Removing Trojan.MSIL.BypassUAC.LC requires careful attention to detail and the use of reputable security tools. It's essential to stay vigilant and keep your security software up to date to protect against future threats. Regular system backups, avoiding suspicious downloads, and being cautious with email attachments and links can also help prevent malware infections. By understanding the nature of this threat and taking proactive steps, you can help secure your system and protect your personal data.

Analysis Report

General information

Family Name: Trojan.MSIL.BypassUAC.LC
Signature status: No Signature

Known Samples

MD5: 50340a6e97d8b15506827198a303bd2b
SHA1: f6f9b2cf0c8bf045998101612fc0b21a13f33505
SHA256: 93D17BA759C4DE2E390CE58D893BF11A90A5FD13E088928C943822C34C04069F
File Size: 11.26 KB, 11264 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • 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)
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

Windows PE Version Information

Name Value
Assembly Version 1.0.0.0
File Description persistent2.0
File Version 1.0.0.0
Internal Name persistent2.0.exe
Legal Copyright Copyright © 2025
Original Filename persistent2.0.exe
Product Name persistent2.0
Product Version 1.0.0.0

File Traits

  • .NET
  • x86

Block Information

Total Blocks: 17
Potentially Malicious Blocks: 1
Whitelisted Blocks: 16
Unknown Blocks: 0

Visual Map

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

Similar Families

  • MSIL.Agent.FSDA
  • MSIL.BypassUAC.K
  • MSIL.BypassUAC.LC
  • MSIL.Inject.YT

Files Modified

File Attributes
c:\users\public\seguridad_windows1212.vbs Generic Write,Read Attributes
c:\users\user\appdata\roaming\microsoft\windows\start menu\programs\startup\windows.vbs Generic Write,Read Attributes

Windows API Usage

Category API
User Data Access
  • GetUserDefaultLocaleName
  • GetUserObjectInformation

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