Threat Database Trojans Trojan.Agent.NBI

Trojan.Agent.NBI

By CagedTech in Trojans

Threat Scorecard

Popularity Rank: 11,737
Threat Level: 80 % (High)
Infected Computers: 153
First Seen: July 17, 2025
Last Seen: July 15, 2026
OS(es) Affected: Windows

The detection of Trojan.Agent.NBI on your system indicates a potential security threat that requires immediate attention. This report provides an overview of the threat, its characteristics, and steps to remove it from your system. It is essential to understand that the presence of Trojan.Agent.NBI may compromise your system's security and put your personal data at risk.

What Is Trojan.Agent.NBI?

Trojan.Agent.NBI is a type of malware that can infect your system and perform malicious activities without your knowledge or consent. The term "Trojan" refers to a type of malware that disguises itself as legitimate software, allowing it to evade detection and gain access to your system. The ".Agent.NBI" part of the name suggests that it may be a variant of a known malware family, but without further information, it is difficult to determine its exact characteristics or behavior.

How Trojan.Agent.NBI Operates

Malware like Trojan.Agent.NBI can operate in various ways, depending on its intended purpose. It may be designed to steal sensitive information, such as login credentials or financial data, or to install additional malware on your system. In some cases, it may also be used to disrupt your system's operation or to exploit its resources for malicious activities, such as cryptocurrency mining or distributed denial-of-service (DDoS) attacks. The exact behavior of Trojan.Agent.NBI can vary, but its presence on your system is a clear indication of a security threat.

Symptoms of Infection

The symptoms of a Trojan.Agent.NBI infection can vary, but common indicators include unusual system behavior, such as slow performance, frequent crashes, or unfamiliar programs running in the background. You may also notice suspicious network activity, such as unexpected connections to unknown servers or unusual data transfers. In some cases, you may receive warnings from your security software or notice that your system's security settings have been altered without your consent.

  • Unexplained changes to your system's configuration or settings
  • Appearance of unfamiliar programs or icons on your desktop
  • Unusual system crashes or freezes
  • Suspicious network activity or unexpected connections to unknown servers

How to Remove Trojan.Agent.NBI

  1. Boot your system in Safe Mode with Networking to prevent the malware from loading and to allow for a more effective removal process.
  2. Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter, to detect and remove any malicious files or programs.
  3. Uninstall any suspicious programs or applications that you do not recognize or that were installed without your consent.
  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

The removal of Trojan.Agent.NBI from your system requires careful attention to detail and a thorough understanding of the malware's characteristics and behavior. By following the steps outlined in this report, you can help to ensure the complete removal of the malware and prevent future infections. It is essential to remain vigilant and to maintain up-to-date security software to protect your system from emerging threats. Remember to always be cautious when downloading software or opening email attachments from unknown sources, and to regularly scan your system for malware to prevent future infections.

Analysis Report

General information

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

Known Samples

MD5: 7dfc1169f695ffaa4edf5223b26005fc
SHA1: 8b74b610c7d52b2e8b27131912a85baa5ddb35a9
SHA256: 00E39D8538C34A3CED915C7FEB5C8DB3639FF42AE3F978B28E3F9392FD4A1384
File Size: 2.28 MB, 2281984 bytes
MD5: ed090ef71e5ddbc1187e9c752341c7ae
SHA1: 4389974c3ee1fbede16b223e988cbc85b22d7560
SHA256: D8D5049E43E9B43C4F2C516D932DE117A288ED044A6A4C7C45D238EF78F3A56E
File Size: 5.62 MB, 5620224 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have exports table
  • 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 Icons

Windows PE Version Information

Name Value
Company Name gameproduction
File Description GameUpdate
File Version 1.0.0
Product Name GameUpdate
Product Version 1.0.0

File Traits

  • dll
  • HighEntropy
  • ntdll
  • x64

Block Information

Total Blocks: 11,342
Potentially Malicious Blocks: 959
Whitelisted Blocks: 9,259
Unknown Blocks: 1,124

Visual Map

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... Data truncated
0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Similar Families

  • Agent.NBI

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAccessCheck
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtApphelpCacheControl
  • ntdll.dll!NtClose
  • ntdll.dll!NtConnectPort
  • ntdll.dll!NtCreateFile
  • ntdll.dll!NtCreateIoCompletion
  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtDeviceIoControlFile
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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!NtOpenProcessTokenEx
  • ntdll.dll!NtOpenSection
  • ntdll.dll!NtOpenSemaphore
  • ntdll.dll!NtOpenThreadTokenEx
  • ntdll.dll!NtProtectVirtualMemory
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryDebugFilterState
  • ntdll.dll!NtQueryDirectoryFileEx
  • ntdll.dll!NtQueryInformationFile
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationThread
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQueryKey
  • ntdll.dll!NtQueryObject
  • ntdll.dll!NtQueryPerformanceCounter
  • ntdll.dll!NtQuerySecurityAttributesToken
  • ntdll.dll!NtQuerySystemInformation
  • 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!NtSetInformationThread
  • ntdll.dll!NtSetInformationVirtualMemory
  • 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!NtWorkerFactoryWorkerReady
  • ntdll.dll!NtWriteFile
  • ntdll.dll!NtWriteVirtualMemory
  • win32u.dll!NtGdiBitBlt
  • win32u.dll!NtGdiCreateBitmap
  • win32u.dll!NtGdiCreateCompatibleDC
  • win32u.dll!NtGdiCreateDIBitmapInternal
  • win32u.dll!NtGdiCreateSolidBrush
  • win32u.dll!NtGdiDeleteObjectApp
  • win32u.dll!NtGdiExtGetObjectW
  • win32u.dll!NtGdiGetDCforBitmap
  • win32u.dll!NtGdiGetDCObject
  • win32u.dll!NtGdiGetDeviceCaps
  • win32u.dll!NtGdiRestoreDC
  • win32u.dll!NtGdiSaveDC
  • win32u.dll!NtGdiSelectBitmap
  • win32u.dll!NtGdiSetDIBitsToDeviceInternal
  • win32u.dll!NtUserBuildHwndList
  • win32u.dll!NtUserCallTwoParam
  • win32u.dll!NtUserCreateEmptyCursorObject
  • win32u.dll!NtUserCreateWindowEx
  • win32u.dll!NtUserDestroyWindow
  • win32u.dll!NtUserFindExistingCursorIcon
  • win32u.dll!NtUserGetAncestor
  • win32u.dll!NtUserGetClassInfoEx
  • win32u.dll!NtUserGetClassName
  • win32u.dll!NtUserGetDC
  • win32u.dll!NtUserGetGUIThreadInfo
  • win32u.dll!NtUserGetIconInfo
  • win32u.dll!NtUserGetIconSize
  • win32u.dll!NtUserGetImeInfoEx
  • win32u.dll!NtUserGetKeyboardLayout
  • win32u.dll!NtUserGetObjectInformation
  • win32u.dll!NtUserGetProcessWindowStation
  • win32u.dll!NtUserGetProp
  • win32u.dll!NtUserGetThreadDesktop
  • win32u.dll!NtUserGetThreadState
  • win32u.dll!NtUserGetWindowCompositionAttribute
  • win32u.dll!NtUserIsNonClientDpiScalingEnabled
  • win32u.dll!NtUserIsTopLevelWindow
  • win32u.dll!NtUserMessageCall
  • win32u.dll!NtUserRegisterClassExWOW
  • win32u.dll!NtUserRegisterWindowMessage
  • win32u.dll!NtUserReleaseDC
  • win32u.dll!NtUserRemoveProp
  • win32u.dll!NtUserSelectPalette

5 additional items are not displayed above.

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