Threat Database Trojans Trojan.Kryptik.Gen.FJ

Trojan.Kryptik.Gen.FJ

By CagedTech in Trojans

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 31
First Seen: November 22, 2025
Last Seen: December 16, 2025
OS(es) Affected: Windows

The detection of Trojan.Kryptik.Gen.FJ on your system indicates a potential security threat that requires immediate attention. This detection name suggests a Trojan-type threat, which is a broad category of malware designed to deceive users into installing or executing malicious software. Trojans can lead to a wide range of issues, including data theft, system compromise, and further malware infections. It's essential to understand the nature of this threat and take appropriate steps to remove it and secure your system.

What Is Trojan.Kryptik.Gen.FJ?

Trojan.Kryptik.Gen.FJ is identified as a Trojan-type threat, which means it is designed to disguise itself as legitimate software or a useful tool to trick users into installing it. Once installed, it can perform a variety of malicious actions, depending on its specific design. Unlike viruses, Trojans do not replicate themselves but can still cause significant harm by providing unauthorized access to your system, stealing sensitive information, or disrupting system operation. The "Kryptik" part of the name might imply encryption or stealth capabilities, but without specific details, it's crucial to focus on general removal and system security practices.

How Trojan.Kryptik.Gen.FJ Operates

Trojan.Kryptik.Gen.FJ, like other Trojans, operates by deceiving users into executing the malicious code. This could happen through various means, such as opening malicious email attachments, downloading software from untrusted sources, or visiting compromised websites. Once executed, the Trojan can establish a connection with its command and control server to receive instructions, which might include downloading additional malware, stealing data, or using the infected system for malicious activities like spamming or DDoS attacks. The exact operation can vary widely depending on the specific goals of the malware authors.

Symptoms of Infection

Symptoms of a Trojan infection can be subtle and may not always be immediately apparent. Common signs include unusual system behavior, such as unexpected pop-ups, slow system performance, or unfamiliar programs appearing on your system. You might also notice that your browser settings have been changed without your consent, or you're being redirected to unwanted websites. In some cases, the presence of a Trojan might not be noticeable at all until it has completed its malicious tasks or until your antivirus software detects it.

How to Remove Trojan.Kryptik.Gen.FJ

  1. Boot your computer in Safe Mode with Networking to prevent the malware from loading and to give you a cleaner environment to work in.
  2. Perform a full scan of your system using a reputable anti-malware tool, such as SpyHunter, to detect and remove all instances of the malware.
  3. Uninstall any suspicious programs that you don't recognize or that were installed around the time the malware was detected.
  4. Reset your web browsers (Chrome, Firefox, Edge) to their default settings to remove any malicious extensions or settings changes made by the Trojan.
  5. Reboot your system and perform another full scan with your anti-malware tool to ensure that all remnants of the malware have been removed.

Conclusion

Removing Trojan.Kryptik.Gen.FJ requires careful and immediate action to prevent further damage to your system and data. By following the steps outlined above, you can effectively remove this threat and take steps to protect your system against future infections. Remember, prevention is key: always be cautious when downloading software, avoid suspicious links and emails, and keep your antivirus and operating system up to date. Regular system scans and backups can also help in early detection and recovery from malware infections. Stay vigilant and proactive in maintaining your system's security to minimize the risk of falling victim to malware threats like Trojan.Kryptik.Gen.FJ.

Analysis Report

General information

Family Name: Trojan.Kryptik.Gen.FJ
Signature status: No Signature

Known Samples

MD5: 15f0f22f1bd15a52a664a345f334f7fd
SHA1: 4677f068419f3bae79317909e1ea425f14a6e2d5
SHA256: 14973D60AE8DF502BF997CDF9C47F4A92F56B8E48EE80843C0F61A696880DD78
File Size: 372.74 KB, 372736 bytes
MD5: 62a168186c7b85b13371f3f4f321ddb0
SHA1: d8a2d04df2dd4305523bcaddb62615d275e8ea99
SHA256: DE5F04B087AE72401B733DDB3BADC3954A9B5593724A66AD529B24D6D69D5D4E
File Size: 372.74 KB, 372736 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have debug information
  • File doesn't have security information
  • File has exports table
  • File is 32-bit executable
  • File is either console or GUI application
  • File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
  • 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 Siemens Medical Solutions, SISL, Pune
File Description Dicom Parser - Parser for Dicom Files.
File Version 1.0
Implementation Software Components and Workstations
Internal Name DicomParser
Legal Copyright (C) 2006 by Siemens AG
Product Name Parser
Product Version 1.0

File Traits

  • dll
  • x86

Block Information

Total Blocks: 1,762
Potentially Malicious Blocks: 1
Whitelisted Blocks: 1,761
Unknown Blocks: 0

Visual Map

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

Similar Families

  • BadJoke.XA
  • Banload.XA
  • Banload.XL
  • Injector.DFF
  • Proleeg.A
Show More
  • Trojan.Kryptik.Gen.FJ

Windows API Usage

Category API
Syscall Use
  • ntdll.dll!NtAlpcSendWaitReceivePort
  • ntdll.dll!NtClose
  • ntdll.dll!NtCreateFile
  • ntdll.dll!NtCreateSection
  • ntdll.dll!NtFreeVirtualMemory
  • ntdll.dll!NtMapViewOfSection
  • ntdll.dll!NtOpenFile
  • ntdll.dll!NtOpenKey
  • ntdll.dll!NtOpenProcessToken
  • ntdll.dll!NtQueryAttributesFile
Show More
  • ntdll.dll!NtQueryDebugFilterState
  • ntdll.dll!NtQueryInformationProcess
  • ntdll.dll!NtQueryInformationToken
  • ntdll.dll!NtQuerySystemInformationEx
  • ntdll.dll!NtQueryValueKey
  • ntdll.dll!NtQueryVirtualMemory
  • ntdll.dll!NtQueryVolumeInformationFile
  • ntdll.dll!NtReadFile
  • ntdll.dll!NtSetEvent
  • ntdll.dll!NtSetInformationFile
  • ntdll.dll!NtSetInformationProcess
  • ntdll.dll!NtSetInformationVirtualMemory
  • ntdll.dll!NtSetInformationWorkerFactory
  • ntdll.dll!NtTestAlert
  • ntdll.dll!NtTraceControl
  • ntdll.dll!NtUnmapViewOfSection
  • ntdll.dll!NtWaitForSingleObject
  • ntdll.dll!NtWriteFile
Process Manipulation Evasion
  • NtUnmapViewOfSection
Process Shell Execute
  • CreateProcess
Anti Debug
  • NtQuerySystemInformation

Shell Command Execution

C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\4677f068419f3bae79317909e1ea425f14a6e2d5_0000372736.,LiQMAxHB
C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\d8a2d04df2dd4305523bcaddb62615d275e8ea99_0000372736.,LiQMAxHB

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