Threat Database Trojans Trojan.Agent.GFSD

Trojan.Agent.GFSD

By CagedTech in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 4
First Seen: July 31, 2025
Last Seen: January 22, 2026
OS(es) Affected: Windows

The detection of Trojan.Agent.GFSD on your system indicates a potential security threat that requires immediate attention. This detection name suggests a type of Trojan horse malware, which is a broad category of malicious software that can cause significant harm to your computer and data. It's essential to understand the nature of this threat and take prompt action to remove it and prevent further damage.

What Is Trojan.Agent.GFSD?

Trojan.Agent.GFSD is a type of malware that can infect your computer without your knowledge or consent. The term "Trojan" refers to the fact that this malware disguises itself as a legitimate program or file, allowing it to bypass security measures and gain access to your system. Once inside, it can perform a variety of malicious activities, including data theft, system compromise, and disruption of normal computer functions.

How Trojan.Agent.GFSD Operates

Malware like Trojan.Agent.GFSD typically operates by exploiting vulnerabilities in software or tricking users into installing it. Once installed, it can communicate with its creators or other malicious entities to receive instructions or upload stolen data. It may also attempt to spread to other parts of the system or to other computers. The exact mechanisms used by Trojan.Agent.GFSD are not specified, but it's clear that it poses a significant threat to your computer's security and your personal data.

Symptoms of Infection

Identifying a Trojan infection can be challenging, as these malware types are designed to remain stealthy. However, some common symptoms may indicate an infection, such as unusual system behavior, slow performance, unexpected pop-ups, or changes to your browser settings. If you suspect that your computer is infected with Trojan.Agent.GFSD, it's crucial to act quickly to minimize potential damage.

  • Unexplained changes in system settings or performance
  • Appearance of unwanted programs or files
  • Increased network activity without a clear cause
  • Difficulty in accessing certain system functions or files

How to Remove Trojan.Agent.GFSD

  1. Boot your computer in Safe Mode with Networking to limit the malware's ability to interfere with the removal process.
  2. Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system. This can help identify and remove all instances of the malware.
  3. Uninstall any suspicious programs or applications that you do not recognize or no longer need.
  4. Reset your web browsers (Chrome, Firefox, Edge) to their default settings to remove any malicious extensions or settings changes.
  5. Reboot your computer and perform another scan with your anti-malware tool to ensure that the threat has been fully removed.

Conclusion

The detection of Trojan.Agent.GFSD is a serious matter that requires immediate action to protect your computer and data. By understanding the nature of this threat and following the steps outlined above, you can remove the malware and restore your system's security. Remember, prevention is key; keeping your software up to date, using strong antivirus protection, and being cautious when downloading files or clicking on links can help prevent future infections. Stay vigilant and ensure your computer remains secure against evolving threats like Trojan.Agent.GFSD.

Analysis Report

General information

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

Known Samples

MD5: f1681d39644ccd57f5181b819fb0456a
SHA1: 8e968574061156bc3ed79f45d37b795bcaf1439b
SHA256: C7FA04C1919A5A98D8C098A73C99B04352F373E61BF8720DE1B255FA615F944E
File Size: 32.26 KB, 32256 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 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)
  • 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
  • ntdll
  • VirtualQueryEx
  • WriteProcessMemory
  • x64

Block Information

Total Blocks: 104
Potentially Malicious Blocks: 4
Whitelisted Blocks: 100
Unknown Blocks: 0

Visual Map

0 0 0 0 0 x x 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 x 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

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!NtCreateSection
  • ntdll.dll!NtDuplicateToken
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
Show More
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtOpenProcessTokenEx
  • ntdll.dll!NtOpenSection
  • 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!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtRequestWaitReplyPort
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtWaitForAlertByThreadId
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWaitForWorkViaWorkerFactory
  • ntdll.dll!NtWaitLowEventPair
  • ntdll.dll!NtWriteFile
  • UNKNOWN

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