Threat Database Trojans Trojan.Agent.TKL

Trojan.Agent.TKL

By CagedTech in Trojans

Threat Scorecard

Popularity Rank: 15,134
Threat Level: 80 % (High)
Infected Computers: 4
First Seen: September 10, 2025
Last Seen: May 19, 2026
OS(es) Affected: Windows

The detection of Trojan.Agent.TKL on your system indicates a potential security threat. This type of malware is known to compromise the security and integrity of infected computers, allowing unauthorized access and potentially leading to further malicious activities. It is essential to understand the nature of this threat and take immediate action to remove it and prevent future infections.

What Is Trojan.Agent.TKL?

Trojan.Agent.TKL 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 deceive users into installing it, often by masquerading as a harmless or useful application. Once installed, Trojan horse malware can perform a variety of malicious functions, including data theft, system compromise, and the installation of additional malware.

How Trojan.Agent.TKL Operates

Like other Trojan horse malware, Trojan.Agent.TKL operates by exploiting vulnerabilities in software or human behavior to gain unauthorized access to a computer system. It may use various tactics, such as social engineering or drive-by downloads, to infect a system. Once installed, the malware can communicate with its creators or other malicious entities, allowing them to remotely control the infected system or steal sensitive information.

Symptoms of Infection

Identifying a Trojan.Agent.TKL infection can be challenging, as the malware is designed to remain stealthy and avoid detection. However, some common symptoms of infection may include slow system performance, unexpected crashes or freezes, and unusual network activity. Additionally, users may notice unfamiliar programs or icons on their system, or receive unexpected pop-ups or alerts. If you suspect that your system is infected with Trojan.Agent.TKL, it is crucial to take immediate action to remove the malware and prevent further damage.

How to Remove Trojan.Agent.TKL

  1. Boot your system in Safe Mode with Networking to prevent the malware from interfering with the removal process.
  2. Use a reputable anti-malware tool, such as SpyHunter, to perform a full scan of your system and detect any malicious files or programs.
  3. Uninstall any suspicious programs or applications that may be related to the Trojan.Agent.TKL infection.
  4. Reset your web browsers, including Chrome, Firefox, and Edge, to their default settings to remove any malicious extensions or add-ons.
  5. Reboot your system and perform a follow-up scan to ensure that the malware has been completely removed.

Conclusion

Removing Trojan.Agent.TKL from your system requires careful attention to detail and a thorough understanding of the malware's behavior. By following the steps outlined above and using reputable anti-malware tools, you can help ensure the complete removal of the malware and prevent future infections. It is also essential to maintain good security practices, such as regularly updating your software, using strong passwords, and avoiding suspicious downloads or links, to minimize the risk of infection and protect your system from potential threats.

Analysis Report

General information

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

Known Samples

MD5: 70cab1a11e7b287751b30d48ce98e869
SHA1: 6e03d4ade1af6163caaf69d4a18a221be86ff133
SHA256: B918595202B0F7AC409728EAF749D107B638B9E776CE359B66C0710D4773F934
File Size: 29.70 KB, 29696 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: 245
Potentially Malicious Blocks: 63
Whitelisted Blocks: 180
Unknown Blocks: 2

Visual Map

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

Similar Families

  • Agent.TKL

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
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  • 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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