Threat Database Trojans Trojan.MSIL.Agent.BUB

Trojan.MSIL.Agent.BUB

By CagedTech in Trojans

Threat Scorecard

Popularity Rank: 26,985
Threat Level: 80 % (High)
Infected Computers: 1
First Seen: April 15, 2026
Last Seen: April 22, 2026
OS(es) Affected: Windows

The detection of Trojan.MSIL.Agent.BUB on your system indicates a potential security threat that requires immediate attention. This detection name suggests a type of malicious software, known as a Trojan, which can compromise the security and integrity of your computer. It is essential to understand the nature of this threat and take appropriate steps to remove it and prevent future infections.

What Is Trojan.MSIL.Agent.BUB?

Trojan.MSIL.Agent.BUB is a type of malware that can infiltrate your system without your knowledge or consent. The term "Trojan" refers to a broad category of malicious software that can disguise itself as legitimate programs or files, allowing it to evade detection and gain unauthorized access to your computer. The specific characteristics of Trojan.MSIL.Agent.BUB are not well-defined, but it is likely designed to perform malicious activities, such as data theft, system compromise, or disruption of normal computer functions.

How Trojan.MSIL.Agent.BUB Operates

Malware like Trojan.MSIL.Agent.BUB typically operates by exploiting vulnerabilities in software or human error to gain access to a system. Once inside, it can spread to other parts of the system, install additional malware, or communicate with its creators to receive further instructions. The exact mechanisms used by Trojan.MSIL.Agent.BUB are not specified, but common tactics include phishing attacks, drive-by downloads, or exploitation of software vulnerabilities. Understanding how malware operates is crucial for taking effective measures to prevent and remove infections.

Symptoms of Infection

Identifying the symptoms of a Trojan.MSIL.Agent.BUB infection can be challenging, as malware is designed to remain stealthy. However, common indicators of a malware infection include unexpected system crashes, slow performance, unfamiliar programs or icons, and suspicious network activity. If you suspect that your system is infected, it is vital to act promptly to minimize potential damage. Regularly monitoring your system's behavior and being cautious when interacting with emails, attachments, and downloads can help in early detection.

How to Remove Trojan.MSIL.Agent.BUB

  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 malware's ability to run.
  2. Download and run a full scan with a reputable anti-malware tool, such as SpyHunter, to detect and remove Trojan.MSIL.Agent.BUB and any associated malware. Ensure the tool is updated to the latest version for the best detection and removal capabilities.
  3. Uninstall any suspicious programs that were installed around the time the malware was detected. Be cautious and only remove programs you are certain are malicious or unnecessary.
  4. Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any malicious extensions or settings that the malware may have altered.
  5. Reboot your computer and run another full scan with your anti-malware tool to ensure that all remnants of the malware have been removed. This step is crucial for verifying the effectiveness of the removal process.

Conclusion

The removal of Trojan.MSIL.Agent.BUB requires careful and systematic steps to ensure that all components of the malware are eliminated from your system. By understanding the nature of this threat and following the recommended removal procedures, you can protect your computer and personal data from potential harm. Regularly updating your operating system, software, and security tools, along with practicing safe computing habits, are essential for preventing future malware infections. Remember, vigilance and proactive measures are key to maintaining the security and integrity of your digital environment.

Analysis Report

General information

Family Name: Trojan.MSIL.Agent.BUB
Signature status: No Signature

Known Samples

MD5: 022f77e0696fb572a5cb4677f637871f
SHA1: 9f8c7fed1e8d9d81a7ded10645796869cac3c2d2
SHA256: 11B94F552D6655A2B013F8EFB5375FE7E4A0556E94F2C5BA6C0982656BB69709
File Size: 15.36 KB, 15360 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 Loader
File Version 1.0.0.0
Internal Name Loader.dll
Legal Copyright Copyright © 2026
Original Filename Loader.dll
Product Name Loader
Product Version 1.0.0.0

File Traits

  • .NET
  • dll
  • x86

Block Information

Total Blocks: 29
Potentially Malicious Blocks: 19
Whitelisted Blocks: 10
Unknown Blocks: 0

Visual Map

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

Similar Families

  • MSIL.Agent.BUB

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAccessCheck
  • ntdll.dll!NtAlertThreadByThreadId
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtClose
  • ntdll.dll!NtConnectPort
  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtDuplicateToken
  • ntdll.dll!NtFreeVirtualMemory
Show More
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtOpenProcessTokenEx
  • ntdll.dll!NtOpenSection
  • ntdll.dll!NtOpenSemaphore
  • ntdll.dll!NtOpenThreadTokenEx
  • ntdll.dll!NtProtectVirtualMemory
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryDebugFilterState
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationThread
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQueryKey
  • ntdll.dll!NtQueryPerformanceCounter
  • ntdll.dll!NtQuerySecurityAttributesToken
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryVolumeInformationFile
  • ntdll.dll!NtQueryWnfStateData
  • ntdll.dll!NtReleaseMutant
  • ntdll.dll!NtReleaseSemaphore
  • ntdll.dll!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtRequestWaitReplyPort
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtSubscribeWnfStateChange
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtUnmapViewOfSectionEx
  • ntdll.dll!NtWaitForAlertByThreadId
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWaitLowEventPair
  • ntdll.dll!NtWriteFile
  • UNKNOWN

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