Threat Database Trojans Trojan.Agent.GFJ

Trojan.Agent.GFJ

By CagedTech in Trojans

Threat Scorecard

Popularity Rank: 25,270
Threat Level: 80 % (High)
Infected Computers: 1
First Seen: February 21, 2025
Last Seen: April 22, 2026
OS(es) Affected: Windows

The detection of Trojan.Agent.GFJ on your system indicates a potential security threat that requires immediate attention. This type of malware is designed to compromise the security of your computer, allowing unauthorized access to your personal data and potentially leading to further malicious activities. It is essential to understand the nature of this threat and take prompt action to remove it and prevent future infections.

What Is Trojan.Agent.GFJ?

Trojan.Agent.GFJ is a type of Trojan horse malware, which is a broad category of malicious software that disguises itself as legitimate programs. The name "Trojan" refers to the malware's ability to sneak into a system by masquerading as a harmless or useful application. Once inside, it can cause significant damage, including data theft, system compromise, and the installation of additional malware. The ".Agent.GFJ" part of the name suggests that this particular variant may have specific characteristics or behaviors, but without more information, it's difficult to determine its exact nature.

How Trojan.Agent.GFJ Operates

Trojan horse malware like Trojan.Agent.GFJ typically operates by exploiting vulnerabilities in software or tricking users into installing it. Once installed, it can create backdoors, allowing remote access to the infected system. This can lead to a range of malicious activities, including the theft of sensitive information, the installation of additional malware, or the use of the system for malicious purposes such as spamming or launching attacks on other systems. The exact mechanisms of operation can vary widely depending on the specific goals of the malware authors.

Symptoms of Infection

Identifying a Trojan.Agent.GFJ infection can be challenging, as it may not always exhibit obvious symptoms. However, some common signs of a Trojan infection include unusual system behavior, such as unexpected crashes, slow performance, or unfamiliar programs running in the background. You might also notice changes in your browser settings, unexpected pop-ups, or suspicious network activity. Since Trojans are designed to be stealthy, it's possible that your system may not show any noticeable symptoms at all, making regular security scans crucial for detection.

How to Remove Trojan.Agent.GFJ

  1. Boot your computer in Safe Mode with Networking to prevent the malware from loading and to allow for internet access to download removal tools.
  2. Download and run a full scan with a reputable anti-malware tool, such as SpyHunter, to detect and remove all traces of the malware.
  3. Uninstall any suspicious programs that you do not recognize or that were installed around the time the malware was detected.
  4. Reset your web browsers (Chrome, Firefox, Edge) to their default settings to remove any malicious extensions or settings changes made by the malware.
  5. Reboot your computer and run another full scan with your anti-malware tool to ensure that all components of the malware have been removed.

Conclusion

Removing Trojan.Agent.GFJ requires careful and immediate action to prevent further damage to your system and protect your personal data. By following the steps outlined above and maintaining good security practices, such as regularly updating your software, using strong antivirus protection, and being cautious with emails and downloads, you can significantly reduce the risk of future infections. Remember, the key to dealing with malware is vigilance and prompt action, so stay informed and keep your defenses up to date.

Analysis Report

General information

Family Name: Trojan.Agent.GFJ
Signature status: No Signature

Known Samples

MD5: 7ce0f19ee8e1a82b069e1fd39e614489
SHA1: 52997961c17b17612e40ef48c228552b6767a0a6
SHA256: 2154DBD3D1EC67A7FD7960FED7AA6AA46306212DF879F2EAA8D0D84BDA9BA5F4
File Size: 54.71 KB, 54707 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have debug information
  • File doesn't have resources
  • File doesn't have security information
  • File has exports table
  • File has TLS information
  • File is 64-bit executable
  • File is either console or GUI application
  • File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
  • File is Native application (NOT .NET application)
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  • 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)

File Traits

  • dll
  • x64

Block Information

Total Blocks: 49
Potentially Malicious Blocks: 1
Whitelisted Blocks: 48
Unknown Blocks: 0

Visual Map

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

Similar Families

  • CobaltStrike.FSD
  • CobaltStrike.GT
  • Trojan.Kryptik.Gen.VL
  • Trojan.ShellcodeRunner.Gen.NU

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAccessCheck
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtClose
  • ntdll.dll!NtConnectPort
  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtDuplicateToken
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
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  • 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!NtWaitForSingleObject
  • ntdll.dll!NtWaitLowEventPair
  • ntdll.dll!NtWriteFile
  • UNKNOWN

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