Threat Database Trojans Trojan.Injector.GFI

Trojan.Injector.GFI

By CagedTech in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 1
First Seen: October 4, 2025
Last Seen: March 24, 2026
OS(es) Affected: Windows

The detection of Trojan.Injector.GFI on your system indicates a potential security threat that requires immediate attention. This type of detection typically points to the presence of a Trojan, which is a broad category of malware designed to allow unauthorized access to a computer system. Trojans can lead to a variety of problems, including data theft, system compromise, and the installation of additional malware. Understanding the nature of this threat and taking prompt action to remove it is crucial for protecting your system and data.

What Is Trojan.Injector.GFI?

Trojan.Injector.GFI refers to a specific type of malware detection that suggests the presence of a Trojan horse. The term "Trojan" comes from the legend of the Trojan Horse, where attackers hide inside a gift to gain access to a protected area. Similarly, Trojan malware disguises itself as legitimate software to infiltrate a computer system. The "Injector" part of the name implies that this malware might be capable of injecting malicious code into other processes or applications on the infected system, which can lead to a range of malicious activities. The "GFI" could refer to the specific detection signature or a characteristic of the malware, but without more context, it's a designation that helps identify the threat.

How Trojan.Injector.GFI Operates

Trojan.Injector.GFI, like other Trojans, operates by deceiving users into installing it on their systems. This can happen through various means, such as opening malicious email attachments, downloading infected software, or visiting compromised websites. Once installed, the Trojan can create a backdoor on the system, allowing remote access to the attackers. This access can be used for stealing sensitive information, installing additional malware, or using the infected system for malicious activities like spamming or participating in botnets. The "injector" capability suggests it might also interfere with or manipulate other running applications to further its malicious goals.

Symptoms of Infection

Identifying a Trojan.Injector.GFI infection can be challenging because Trojans are designed to remain stealthy. However, some possible symptoms of infection include unusual system behavior, such as unexpected crashes, slow performance, or unfamiliar programs and icons. You might also notice increased network activity, even when you're not using the internet, or find that your security software is disabled. Sometimes, Trojans can lead to the installation of additional malware, which might exhibit more overt symptoms, such as ransom demands or fake antivirus alerts.

How to Remove Trojan.Injector.GFI

  1. Enter Safe Mode with Networking to limit the malware's ability to interfere with the removal process. This mode allows you to use the internet to download removal tools while restricting the execution of malicious programs.
  2. Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter. Ensure the tool is updated with the latest definitions to improve the chances of detecting and removing the Trojan.
  3. Uninstall suspicious programs that you don't recognize or that were installed around the time you suspect the infection occurred. Be cautious and only remove programs you are certain are malicious or unnecessary.
  4. Reset your browsers (Chrome, Firefox, Edge, etc.) to their default settings. This can help remove any malicious extensions or settings changes made by the Trojan. Go to the settings of each browser, find the option to reset settings, and follow the prompts.
  5. After completing the above steps, reboot your system and then perform another full scan with your anti-malware tool to ensure that the Trojan and any associated malware are fully removed.

Conclusion

Removing Trojan.Injector.GFI from your system requires careful and systematic steps to ensure that all components of the malware are eliminated. It's crucial to act quickly to prevent further damage and to protect your personal data. Remember, prevention is key; keeping your operating system, software, and security tools up to date, along with being cautious when downloading and installing programs or clicking on links, can significantly reduce the risk of future infections. If you're unsure about any part of the removal process, consider seeking help from a professional to ensure your system is thoroughly cleaned and secured.

Analysis Report

General information

Family Name: Trojan.Injector.GFI
Signature status: No Signature

Known Samples

MD5: 2d300111481fafe2a5039d6623ecfde0
SHA1: 17d7c66923fa379b78183c4ff17ae770998b6559
SHA256: CFFF618F5F68A0491ABB0731A3BD05CD88C5B24B6EE3768FC6D078ADE53E213C
File Size: 717.82 KB, 717824 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have debug information
  • File doesn't have exports table
  • File doesn't have security information
  • 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)
  • File is not packed
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  • IMAGE_FILE_DLL is not set inside PE header (Executable)
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

File Traits

  • No Version Info
  • WriteProcessMemory
  • x64

Block Information

Total Blocks: 2,044
Potentially Malicious Blocks: 643
Whitelisted Blocks: 1,401
Unknown Blocks: 0

Visual Map

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

Similar Families

  • Injector.GFI

Files Modified

File Attributes
c:\users\user\appdata\local\microsoft\windows\caches\cversions.1.db Synchronize,Write Attributes
c:\users\user\appdata\local\microsoft\windows\caches\cversions.3.db Synchronize,Write Attributes
c:\users\user\appdata\local\microsoft\windows\caches\{384756ba-b905-4d30-88c9-b63c603da134}.3.ver0x0000000000000001.db Synchronize,Write Attributes
c:\users\user\appdata\local\microsoft\windows\caches\{3da71d5a-20cc-432f-a115-dfe92379e91f}.3.ver0x000000000000083b.db Synchronize,Write Attributes
c:\users\user\appdata\local\microsoft\windows\caches\{3da71d5a-20cc-432f-a115-dfe92379e91f}.3.ver0x000000000000083c.db Synchronize,Write Attributes
c:\users\user\appdata\local\microsoft\windows\caches\{afbf9f1a-8ee8-4c77-af34-c647e37ca0d9}.1.ver0x0000000000000dc9.db Synchronize,Write Attributes
c:\users\user\appdata\local\microsoft\windows\caches\{afbf9f1a-8ee8-4c77-af34-c647e37ca0d9}.1.ver0x0000000000000dca.db Synchronize,Write Attributes

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAccessCheck
  • ntdll.dll!NtAddAtomEx
  • ntdll.dll!NtAlertThreadByThreadId
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtClose
  • ntdll.dll!NtConnectPort
  • ntdll.dll!NtCreateEvent
  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtCreateSemaphore
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  • ntdll.dll!NtDuplicateToken
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtOpenSection
  • ntdll.dll!NtOpenSemaphore
  • ntdll.dll!NtOpenThreadToken
  • ntdll.dll!NtProtectVirtualMemory
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryDirectoryFileEx
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationThread
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQueryKey
  • ntdll.dll!NtQueryLicenseValue
  • ntdll.dll!NtQueryPerformanceCounter
  • ntdll.dll!NtQuerySecurityAttributesToken
  • ntdll.dll!NtQuerySecurityObject
  • ntdll.dll!NtQuerySystemInformation
  • ntdll.dll!NtQueryTimerResolution
  • 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!NtWaitForAlertByThreadId
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWaitForWorkViaWorkerFactory
  • ntdll.dll!NtWaitLowEventPair
  • ntdll.dll!NtWriteFile
  • UNKNOWN
User Data Access
  • GetComputerName
  • GetUserName

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