Threat Database Trojans Trojan.MSIL.Agent.FFU

Trojan.MSIL.Agent.FFU

By CagedTech in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 1
First Seen: June 24, 2025
Last Seen: January 19, 2026
OS(es) Affected: Windows

The detection of Trojan.MSIL.Agent.FFU indicates that your system has been compromised by a potentially malicious program. This type of threat is generally categorized as a Trojan, which is a broad term for malware that disguises itself as legitimate software. Trojans can cause significant harm to your system and data, making it essential to understand the nature of this threat and take immediate action to remove it.

What Is Trojan.MSIL.Agent.FFU?

Trojan.MSIL.Agent.FFU is a type of malware that can infect your system through various means, such as downloading malicious software, opening infected email attachments, or visiting compromised websites. The name "Trojan.MSIL.Agent.FFU" suggests that it is a Trojan-type threat, but without more specific information, it's difficult to determine its exact origin or purpose. MSIL stands for Microsoft Intermediate Language, which is a component of the .NET framework, indicating that this malware might be designed to interact with or exploit vulnerabilities in .NET applications.

How Trojan.MSIL.Agent.FFU Operates

Once installed, Trojan.MSIL.Agent.FFU can operate in various ways, depending on its intended purpose. Trojans are known for their ability to disguise themselves as legitimate programs, making them difficult to detect. They can create backdoors, allowing remote access to your system, steal sensitive information, or download and install additional malware. The specific operations of Trojan.MSIL.Agent.FFU would depend on its design and the goals of its creators, but the general behavior of Trojans includes evading detection, exploiting system vulnerabilities, and causing harm to the infected system or its data.

Symptoms of Infection

Symptoms of a Trojan infection can vary widely but may include unusual system behavior, such as unexpected pop-ups, slow performance, or crashes. You might also notice that your browser settings have changed, or you're being redirected to unwanted websites. In some cases, the presence of a Trojan might not be immediately apparent, as it may be designed to operate stealthily in the background. However, keeping an eye out for any unusual activity on your system can help in early detection and removal of such threats.

How to Remove Trojan.MSIL.Agent.FFU

  1. Boot your system into Safe Mode with Networking. This will help prevent the malware from loading and make it easier to remove.
  2. Download and install a reputable anti-malware tool, such as SpyHunter, and perform a full scan of your system. This tool can help identify and remove the Trojan and any other malware that might be present.
  3. Uninstall any suspicious programs that you don't recognize or that were installed around the time you noticed the infection. Be cautious and only remove programs you are sure are malicious or unnecessary.
  4. Reset your web browsers (Chrome, Firefox, Edge, etc.) to their default settings. This can help remove any malicious extensions or settings that the Trojan might have installed.
  5. Reboot your system and perform another scan with your anti-malware tool to ensure that the Trojan and any associated malware have been completely removed.

Conclusion

Removing Trojan.MSIL.Agent.FFU requires careful and immediate action to prevent further damage to your system and data. By following the steps outlined above and maintaining vigilance, you can help protect your system from similar threats in the future. It's also crucial to keep your operating system, software, and security tools up to date, as newer versions often include patches for known vulnerabilities that malware like Trojans exploit. Remember, prevention and regular system checks are key to maintaining the security and integrity of your digital environment.

Analysis Report

General information

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

Known Samples

MD5: e05f20394f556bd4ad887f2e8cec7611
SHA1: f7a9f37a06c4a9687779c7c5644760b6f21ffab0
SHA256: ECC8E3D0F89B792CED877B5BCF2D9A740748A16954C487A47A54485D40214CEA
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 Desktop
File Version 1.0.0.0
Internal Name ReverseProxyR.dll
Legal Copyright Copyright © 2024
Original Filename ReverseProxyR.dll
Product Name Desktop
Product Version 1.0.0.0

File Traits

  • .NET
  • dll
  • x86

Block Information

Total Blocks: 40
Potentially Malicious Blocks: 27
Whitelisted Blocks: 12
Unknown Blocks: 1

Visual Map

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

Similar Families

  • MSIL.Agent.FFU

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

Related Posts

Trending

Most Viewed

Loading...