Threat Database Trojans Trojan.KillMBR.W

Trojan.KillMBR.W

By CagedTech in Trojans

Threat Scorecard

Popularity Rank: 23,365
Threat Level: 80 % (High)
Infected Computers: 2
First Seen: March 29, 2023
Last Seen: June 20, 2026
OS(es) Affected: Windows

The detection of Trojan.KillMBR.W on your system indicates a potential security threat that requires immediate attention. This report aims to provide you with a comprehensive understanding of the threat, its operation, symptoms, and most importantly, the steps to remove it from your system. It's essential to approach this situation with caution and follow the recommended guidelines to ensure the security and integrity of your data.

What Is Trojan.KillMBR.W?

Trojan.KillMBR.W is identified as a Trojan-type threat, which typically refers to a broad category of malware designed to deceive users into installing or executing malicious code on their systems. The name itself does not directly indicate a specific malware family but suggests potential capabilities related to Master Boot Record (MBR) manipulation. Trojans can range from simple annoyances to highly sophisticated threats capable of causing significant damage or theft of sensitive information.

How Trojan.KillMBR.W Operates

While specific details about the operation of Trojan.KillMBR.W are not available, Trojans generally operate by exploiting vulnerabilities in software or human psychology. They can be disguised as useful software, games, or even security programs. Once installed, they can perform a variety of malicious actions, including but not limited to, stealing personal data, installing additional malware, or providing unauthorized access to the infected system. The ability to manipulate the MBR, as suggested by the name, could potentially allow the malware to load before the operating system, making it particularly challenging to detect and remove.

Symptoms of Infection

Symptoms of a Trojan infection can vary widely depending on the specific goals of the malware. Common signs include unexpected changes to system settings, appearance of unfamiliar programs or icons, slow system performance, frequent crashes, or pop-ups and other unwanted advertisements. In some cases, the infection may not exhibit noticeable symptoms, making regular system scans crucial for detection. Given the potential MBR manipulation capabilities of Trojan.KillMBR.W, systems might experience boot issues or failure to load the operating system properly.

How to Remove Trojan.KillMBR.W

  1. Enter Safe Mode with Networking to prevent the malware from loading and to allow for internet access. This will give you a clean environment to work in.
  2. Perform a full scan of your system using a reputable anti-malware tool such as SpyHunter. Ensure the tool is updated to the latest version to increase the chances of detecting and removing the threat.
  3. Uninstall suspicious programs that you do not recognize or that were installed around the time the malware was detected. Be cautious and only remove programs you are certain are not needed.
  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 malware.
  5. After completing the above steps, reboot your system and perform another full scan to ensure that the threat has been successfully removed. Repeat the scanning process until no threats are detected.

Conclusion

The removal of Trojan.KillMBR.W requires careful and systematic steps to ensure that the malware is completely eradicated from your system. It's crucial to remain vigilant and proactive in maintaining your system's security through regular updates, backups, and scans. Remember, prevention is key, and being cautious with emails, downloads, and software installations can significantly reduce the risk of future infections. If you are unsure about any part of the removal process, consider seeking help from a professional to avoid any potential risks to your system or data.

Analysis Report

General information

Family Name: Trojan.KillMBR.W
Signature status: No Signature

Known Samples

MD5: c50b7a75006047d5288a3ea5dfc967d7
SHA1: a3fec3dfc2047dc827ae5a991e2d9be7741b7083
SHA256: 415E6D4F552423BB7F28D2A535E9963295562393F470C63D4086FB0FAA237752
File Size: 130.05 KB, 130048 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have exports table
  • File doesn't have security information
  • File is .NET application
  • File is 32-bit executable
  • File is either console or GUI application
  • File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
  • 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
Assembly Version 1.0.0.0
File Description Dead Fish
File Version 1.0.0.0
Internal Name Dead Fish-GDIOnly.exe
Legal Copyright Copyright © 2022
Original Filename Dead Fish-GDIOnly.exe
Product Name Dead Fish
Product Version 1.0.0.0

File Traits

  • .NET
  • x86

Block Information

Total Blocks: 30
Potentially Malicious Blocks: 25
Whitelisted Blocks: 5
Unknown Blocks: 0

Visual Map

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

Similar Families

  • KillMBR.W

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtClearEvent
  • ntdll.dll!NtClose
  • ntdll.dll!NtConnectPort
  • ntdll.dll!NtCreateEvent
  • ntdll.dll!NtCreateFile
  • ntdll.dll!NtCreateMutant
  • ntdll.dll!NtCreatePrivateNamespace
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtCreateThreadEx
Show More
  • ntdll.dll!NtDuplicateObject
  • ntdll.dll!NtEnumerateKey
  • ntdll.dll!NtEnumerateValueKey
  • ntdll.dll!NtFlushProcessWriteBuffers
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenDirectoryObject
  • ntdll.dll!NtOpenEvent
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenKeyEx
  • ntdll.dll!NtOpenProcess
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtOpenSection
  • ntdll.dll!NtOpenThreadToken
  • ntdll.dll!NtProtectVirtualMemory
  • ntdll.dll!NtQueryAttributesFile
  • ntdll.dll!NtQueryDefaultLocale
  • ntdll.dll!NtQueryDirectoryFileEx
  • ntdll.dll!NtQueryFullAttributesFile
  • ntdll.dll!NtQueryInformationFile
  • ntdll.dll!NtQueryInformationJobObject
  • 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!NtQuerySystemInformationEx
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryVolumeInformationFile
  • ntdll.dll!NtReadFile
  • ntdll.dll!NtReleaseMutant
  • ntdll.dll!NtReleaseWorkerFactoryWorker
  • ntdll.dll!NtRequestWaitReplyPort
  • ntdll.dll!NtResumeThread
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationKey
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationThread
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtSubscribeWnfStateChange
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtUnmapViewOfSectionEx
  • ntdll.dll!NtWaitForMultipleObjects
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWaitForWorkViaWorkerFactory
  • ntdll.dll!NtWaitLowEventPair
  • ntdll.dll!NtWriteFile
  • UNKNOWN
User Data Access
  • GetUserDefaultLocaleName
  • GetUserObjectInformation
Anti Debug
  • IsDebuggerPresent

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