Threat Database Trojans Trojan.Agent.BNDJ

Trojan.Agent.BNDJ

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 5
First Seen: March 3, 2025
Last Seen: October 12, 2026
OS(es) Affected: Windows

Trojan.Agent.BNDJ is a Trojan horse infection that targets Windows computers. It is classified as a dangerous threat, carrying a high danger rating, because it is designed to secretly take hold of a system and give attackers the ability to manipulate it without the user's knowledge. Like other members of the Agent Trojan family, it is built to stay hidden while it carries out harmful activity in the background.

What Trojan.Agent.BNDJ Does

Once active on a system, Trojan.Agent.BNDJ runs silently in the background, avoiding obvious signs of its presence. It is capable of giving remote attackers a significant level of control over an infected machine. This can include covertly deleting files, installing additional malicious programs, and performing other unauthorized actions on the compromised device. Analysis of the sample shows it is a native Windows executable that does not carry a digital signature, and it attempts to disguise itself using file details that closely mimic legitimate Microsoft system components, such as names and descriptions normally associated with a Windows printer configuration interface. This kind of disguise is a common tactic used to make the file appear trustworthy and avoid raising suspicion from the user or from basic security checks.

The threat also interacts with low-level Windows system functions, including calls related to writing data, managing memory, and handling system events. This type of behavior is typically associated with attempts to manipulate running processes or quietly perform operations that are not visible through normal use of the computer.

How It Usually Gets Onto Computers

Trojan.Agent.BNDJ typically spreads the same way many Trojans do. It often installs itself stealthily by exploiting system vulnerabilities and security weaknesses. It can also arrive through software downloaded from malicious or compromised websites, or through email attachments sent from untrusted or unknown senders. These attachments are frequently disguised as common file types, including executables, image files, or video files, to trick users into opening them.

Risks for the User

Because Trojan.Agent.BNDJ can grant attackers extensive control over an infected system, the risks are serious. Potential consequences typically associated with this type of Trojan include theft of passwords and personal information, unauthorized changes to system settings, monitoring of computer activity, deletion or corruption of files, and the silent installation of additional malware. In many cases, infected systems can be used as a launching point for further attacks without the owner's awareness.

Signs of Infection

Trojans like this one are designed to avoid detection, so obvious symptoms are not always present. However, users may notice unusual system slowdowns, unexpected network activity, new or unfamiliar processes running in the background, changes to system settings that were not made by the user, or the appearance of unfamiliar files and programs. Any unexplained changes in system behavior should be treated as a potential warning sign.

How to Stay Protected

To reduce the risk of infection, keep the Windows operating system and all installed software fully updated, since unpatched vulnerabilities are a common entry point for threats like this. Avoid downloading programs from unofficial or suspicious websites, and never open email attachments from unknown or unexpected senders, especially executable or unusual file types. Running up-to-date security software and performing regular system scans can help detect and remove threats before they cause significant damage. Maintaining regular backups of important files also helps limit the impact if a system does become compromised.

Analysis Report

General information

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

Known Samples

MD5: c0763759ff86e91dbed9602316ce93a1
SHA1: bf111375af26fe879a7d05031c11d9e233de8c6c
SHA256: 138D896A5CB897EE023553BC4BB3DD552F42A1EA3E951FB018C9BF4658F9AB25
File Size: 155.14 KB, 155136 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have security information
  • File has exports table
  • File has TLS information
  • File is 64-bit executable
  • File is console application (IMAGE_SUBSYSTEM_WINDOWS_CUI)
  • File is either console or GUI application
  • File is Native application (NOT .NET application)
  • File is not packed
  • IMAGE_FILE_DLL is not set inside PE header (Executable)
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  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

Windows PE Version Information

Name Value
Company Name
  • Microsoft Corporation
File Description
  • Brugergrænseflade til PrintConfig
  • Brukergrensesnitt for PrintConfig
  • Interfaccia utente PrintConfig
  • Interface de Utilizador PrintConfig
  • Interface do Usuário de PrintConfig
  • Interface utilisateur PrintConfig
  • Interfaz de usuario de PrintConfig
  • Interfață utilizator configurare imprimantă
  • Interfejs użytkownika PrintConfig
  • Korisnički interfejs konfiguracije štampanja
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  • Korisničko sučelje PrintConfig
  • Nyomtatókonfigurációs kezelőfelület
  • Používateľské rozhranie PrintConfig
  • Prindikonfiguratsiooni kasutajaliides
  • PrintConfig-användargränssnitt
  • PrintConfig-Benutzeroberfläche
  • PrintConfig-gebruikersinterface
  • PrintConfig-käyttöliittymä
  • PrintConfig Kullanıcı Arabirimi
  • PrintConfig lietotāja interfeiss
  • PrintConfig User Interface
  • PrintConfig vartotojo sąsaja
  • PrintConfig ユーザー インターフェイス
  • PrintConfig 使用者介面
  • PrintConfig 用户界面
  • PrintConfig 사용자 인터페이스
  • Uporabniški vmesnik PrintConfig
  • Περιβάλλον εργασίας χρήστη PrintConfig
  • Інтерфейс користувача PrintConfig
  • Пользовательский интерфейс PrintConfig
  • Потребителски интерфейс за конфигурация на принтера
  • ממשק משתמש של PrintConfig
  • واجهة مستخدم PrintConfig
  • ส่วนติดต่อผู้ใช้ PrintConfig
File Version
  • 10.0.26100.9444 (WinBuild.160101.0800)
Internal Name
  • PRINTCONFIG.DLL
Legal Copyright
  • © Microsoft. Todos los derechos reservados.
  • © Microsoft Corporation. Alle rechten voorbehouden.
  • © Microsoft Corporation. Alle Rechte vorbehalten.
  • © Microsoft Corporation. Alle rettigheder forbeholdes.
  • © Microsoft Corporation. All rights reserved.
  • © Microsoft Corporation. Kaikki oikeudet pidätetään.
  • © Microsoft Corporation. Kõik õigused kaitstud.
  • © Microsoft Corporation. Med enerett.
  • © Microsoft Corporation. Med ensamrätt.
  • © Microsoft Corporation. Minden jog fenntartva.
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  • © Microsoft Corporation. Sva prava pridržana.
  • © Microsoft Corporation. Sva prava zadržana.
  • © Microsoft Corporation. Toate drepturile rezervate.
  • © Microsoft Corporation. Todos los derechos reservados.
  • © Microsoft Corporation. Todos os direitos reservados.
  • © Microsoft Corporation. Tous droits réservés.
  • © Microsoft Corporation. Tutti i diritti riservati.
  • © Microsoft Corporation. Tüm hakları saklıdır.
  • © Microsoft Corporation. Visas tiesības paturētas.
  • © Microsoft Corporation. Vse pravice pridržane.
  • © Microsoft Corporation. Všechna práva vyhrazena.
  • © Microsoft Corporation. Všetky práva vyhradené.
  • © Microsoft Corporation. Wszelkie prawa zastrzeżone.
  • © Microsoft Corporation. Με επιφύλαξη κάθε νόμιμου δικαιώματος.
  • © Microsoft Corporation. Всички права запазени.
  • © Microsoft Corporation สงวนลิขสิทธิ์
  • © Корпорация Майкрософт (Microsoft Corporation). Все права защищены.
  • © Корпорація Майкрософт (Microsoft Corporation). Усі права захищено.
  • © „Microsoft Corporation“. Visos teisės ginamos.
Original Filename
  • PRINTCONFIG.DLL
Product Name
  • Betriebssystem Microsoft® Windows®
  • Microsoft® Windows®-besturingssysteem
  • Microsoft® Windows® -käyttöjärjestelmä
  • Microsoft® Windows® Operating System
  • Microsoft® Windows® Operativsystem
  • Microsoft® Windows® operációs rendszer
  • Microsoft® Windows® İşletim Sistemi
  • Operacijski sistem Microsoft® Windows®
  • Operacijski sustav Microsoft® Windows®
  • Operacinė sistema „Microsoft® Windows®“
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  • Operativni sistem Microsoft® Windows®
  • Operativsystemet Microsoft® Windows®
  • Operatsioonisüsteem Microsoft® Windows®
  • Operační systém Microsoft® Windows®
  • Operētājsistēma Microsoft® Windows®
  • Sistema Operacional Microsoft® Windows®
  • Sistema operativo Microsoft® Windows®
  • Sistem de operare Microsoft® Windows®
  • System operacyjny Microsoft® Windows®
  • Système d exploitation Microsoft® Windows®
  • Système d’exploitation Microsoft® Windows®
  • Λειτουργικό σύστημα Microsoft® Windows®
  • Операционна система Microsoft® Windows®
  • Операционная система Microsoft® Windows®
  • Операційна система Microsoft® Windows®
  • ระบบปฏิบัติการ Microsoft® Windows®
Product Version
  • 10.0.26100.9444

File Traits

  • dll
  • ntdll
  • WriteProcessMemory
  • x64

Block Information

Total Blocks: 419
Potentially Malicious Blocks: 74
Whitelisted Blocks: 329
Unknown Blocks: 16

Visual Map

x x x x x x 0 x x x x x x x x 0 ? 0 0 x ? 0 0 0 0 0 0 x x 0 0 0 0 0 0 0 0 0 0 0 0 0 0 x x 1 x 0 x 0 x x x x ? ? x x 0 0 x 0 0 0 0 0 0 x x x x 0 0 0 0 x x x x x x x x 0 0 0 x ? x x x x x 0 0 0 0 0 ? 0 ? 0 ? 0 0 ? 0 0 0 x 0 0 x x 0 ? 0 ? ? 0 x x 0 0 0 0 0 0 0 x 0 0 x 0 0 0 0 0 0 0 ? 1 0 0 ? 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 x 0 x x x x x 0 x 0 x x x 0 0 x x x x x x x x 0 x ? ? 0 0 0 0 0 0 0 0 0 0 x 0 0 0 0 0 0 0 0 0 0 0 1 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 x 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 2 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 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 1 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 1
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 �n78� �vT�������Bx$kF&� (�(X�)�`1�1HO@V�_�zb"hc�zj�bk�qlR tǤz��{b��P��jI�/������7�b:�������X��V�����.�a ��v�j���*��r�m�Ù��IV��z����$٢��a��8წ���Κ��j�&M��=� RegNtPreCreateKey

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