Threat Database Trojans Trojan.Agent.ZFA

Trojan.Agent.ZFA

By CagedTech in Trojans

Threat Scorecard

Popularity Rank: 2,635
Threat Level: 80 % (High)
Infected Computers: 2,840
First Seen: November 3, 2021
Last Seen: July 15, 2026
OS(es) Affected: Windows

The detection of Trojan.Agent.ZFA on your system indicates a potential security threat that requires immediate attention. This type of malware is designed to compromise the security and integrity of your computer, and it's essential to understand its nature and how to remove it effectively. In this report, we will provide you with an overview of Trojan.Agent.ZFA, its operating methods, symptoms of infection, and a step-by-step guide on how to remove it from your system.

What Is Trojan.Agent.ZFA?

Trojan.Agent.ZFA is a type of Trojan horse malware that can sneak into your system without your knowledge or consent. Trojans are malicious programs that disguise themselves as legitimate software, allowing them to bypass security measures and gain unauthorized access to your computer. The name "Trojan.Agent.ZFA" suggests that it is a variant of Trojan horse malware, but its specific characteristics and behaviors may vary.

How Trojan.Agent.ZFA Operates

Once installed, Trojan.Agent.ZFA can operate in various ways, depending on its intended purpose. It may attempt to steal sensitive information, such as login credentials, credit card numbers, or personal data. It can also create backdoors, allowing remote access to your system, or download and install additional malware. Furthermore, it may modify system settings, disable security software, or disrupt system performance. The exact operations of Trojan.Agent.ZFA can vary, but its primary goal is to compromise your system's security and integrity.

Symptoms of Infection

Identifying the symptoms of a Trojan.Agent.ZFA infection can be challenging, as they may resemble those of other malware or system issues. However, some common indicators include slow system performance, frequent crashes, or unexpected behavior. You may also notice unfamiliar programs or icons on your desktop, or receive suspicious pop-ups or alerts. Additionally, your antivirus software may detect and alert you to the presence of malware, or you may experience difficulties accessing certain websites or online services.

  • Unexplained changes to system settings or configuration
  • Appearance of unfamiliar programs or files
  • Increased network activity or data usage
  • System crashes or freezes
  • Pop-ups, alerts, or other unexpected messages

How to Remove Trojan.Agent.ZFA

  1. Boot your system in Safe Mode with Networking to prevent the malware from loading and to allow for easier removal.
  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.ZFA 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 another full scan with your anti-malware tool to ensure that the malware has been completely removed.

Conclusion

Removing Trojan.Agent.ZFA from your system requires careful attention to detail and a thorough understanding of its operating methods. By following the steps outlined in this report, you can effectively remove the malware and restore your system's security and integrity. It's essential to remain vigilant and take proactive measures to prevent future infections, such as keeping your operating system and software up to date, using strong antivirus software, and avoiding suspicious downloads or links. Remember to always prioritize your system's security and take immediate action if you suspect a malware infection.

Analysis Report

General information

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

Known Samples

MD5: 9dde7bdd3b5a1d4a4b3bbc058b58575b
SHA1: ecd7ba9ba7c574b6a84dfcc8abcc9154c70c4005
SHA256: 3EF9F55B2B4872B9413FFF707A6002BBEA9AE7E04A6641DBE6033B7BB0E71ABE
File Size: 624.13 KB, 624128 bytes
MD5: 37b8c3058e9114ef61405326d4229208
SHA1: 544c7f5d530b3ca5afb61288a9e750f9b76967af
SHA256: C81955DC9843DAAD2E9234ACD1FE6CB693080DF4A5869CB185AF27C35A257C59
File Size: 608.77 KB, 608768 bytes
MD5: 501d0245c181d597adf8decaf2a359a7
SHA1: 0df75431f2904563e814448393a2e9484ce37044
SHA256: 209BD16206CAE1231792D3D80163821E4FC4C59B4656A1BBA991903ADDAFC8B8
File Size: 1.24 MB, 1239552 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have exports table
  • File doesn't have security information
  • File has exports table
  • File is .NET application
  • File is 32-bit executable
  • File is 64-bit executable
  • File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
  • File is either console or GUI application
  • File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
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  • 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)

Windows PE Version Information

Name Value
Assembly Version 1.0.0.0
Comments
  • a powerful chart addin for Excel
  • Unmanaged loader shim for Excel-DNA Add-Ins
Company Name
  • Govert van Drimmelen
  • tusimple BI DataTech Inc.
File Description
  • Excel-DNA Dynamic Link Library
  • tuSimpleBI
File Version
  • 1.1.0.3
  • 1.0.0.0
Internal Name
  • ExcelDna
  • tusimpleBI.dll
Legal Copyright
  • Copyright (C) 2005-2020 Govert van Drimmelen
  • Copyright © tusimpleBI
Legal Trademarks tusimpleBI
Original Filename
  • ExcelDna.xll
  • tusimpleBI.dll
Product Name
  • Excel-DNA Add-In Framework for Microsoft Excel
  • tuSimpleBI
Product Version
  • 1.1
  • 1.0.0.0

File Traits

  • dll
  • HighEntropy
  • x64

Block Information

Total Blocks: 29
Potentially Malicious Blocks: 0
Whitelisted Blocks: 24
Unknown Blocks: 5

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

Registry Modifications

Key::Value Data API Name
HKLM\software\microsoft\windows nt\currentversion\notifications\data::418a073aa3bc1c75 �m �v(�1�1HO@V�H[u_�zb"h{b��P����������m�����$წ���=�SB1_T�Vw���%�������AE��D��&��$���L RegNtPreCreateKey

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!NtWaitForWorkViaWorkerFactory
  • ntdll.dll!NtWaitLowEventPair
  • ntdll.dll!NtWriteFile
  • UNKNOWN

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