Written by Robert Bailey

What is Win32/Kryptik.HJFW infection?

In this article you will discover concerning the meaning of Win32/Kryptik.HJFW and also its adverse influence on your computer. Such ransomware are a type of malware that is elaborated by on the internet scams to require paying the ransom by a sufferer.

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In the majority of the cases, Win32/Kryptik.HJFW ransomware will certainly advise its targets to launch funds transfer for the function of counteracting the modifications that the Trojan infection has actually presented to the victim’s gadget.

Win32/Kryptik.HJFW Summary

These alterations can be as adheres to:

  • Executable code extraction. Cybercriminals often use binary packers to hinder the malicious code from reverse-engineered by malware analysts. A packer is a tool that compresses, encrypts, and modifies a malicious file’s format. Sometimes packers can be used for legitimate ends, for example, to protect a program against cracking or copying.
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • Presents an Authenticode digital signature;
  • Creates RWX memory. There is a security trick with memory regions that allows an attacker to fill a buffer with a shellcode and then execute it. Filling a buffer with shellcode isn’t a big deal, it’s just data. The problem arises when the attacker is able to control the instruction pointer (EIP), usually by corrupting a function’s stack frame using a stack-based buffer overflow, and then changing the flow of execution by assigning this pointer to the address of the shellcode.
  • A process created a hidden window;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses Windows utilities for basic functionality;
  • Executed a process and injected code into it, probably while unpacking;
  • Installs itself for autorun at Windows startup.

    There is simple tactic using the Windows startup folder located at:
    C:\Users\[user-name]\AppData\Roaming\Microsoft\Windows\StartMenu\Programs\Startup Shortcut links (.lnk extension) placed in this folder will cause Windows to launch the application each time [user-name] logs into Windows.

    The registry run keys perform the same action, and can be located in different locations:

    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents situated on the victim’s hard disk drive — so the target can no more make use of the information;
  • Preventing routine access to the victim’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.


The most normal networks through which Win32/Kryptik.HJFW Trojans are injected are:

  • By methods of phishing e-mails;
  • As a repercussion of individual winding up on a resource that organizes a harmful software;

As soon as the Trojan is efficiently injected, it will either cipher the data on the sufferer’s PC or prevent the device from operating in an appropriate way – while also placing a ransom money note that points out the demand for the sufferers to impact the settlement for the function of decrypting the documents or recovering the data system back to the initial condition. In many circumstances, the ransom note will certainly show up when the customer restarts the COMPUTER after the system has actually already been harmed.

Win32/Kryptik.HJFW distribution networks.

In various edges of the globe, Win32/Kryptik.HJFW expands by jumps and bounds. However, the ransom notes as well as methods of obtaining the ransom amount might differ relying on specific regional (regional) setups. The ransom money notes and techniques of extorting the ransom money quantity may differ depending on specific neighborhood (local) setups.

Ransomware injection

For example:

    Faulty informs concerning unlicensed software program.

    In specific locations, the Trojans typically wrongfully report having actually discovered some unlicensed applications made it possible for on the sufferer’s tool. The sharp after that demands the user to pay the ransom money.

    Faulty statements about unlawful material.

    In nations where software piracy is much less preferred, this technique is not as effective for the cyber scams. Conversely, the Win32/Kryptik.HJFW popup alert might incorrectly assert to be originating from a police organization and will certainly report having situated youngster pornography or various other prohibited information on the device.

    Win32/Kryptik.HJFW popup alert might incorrectly declare to be acquiring from a regulation enforcement establishment and will certainly report having located kid porn or various other illegal information on the tool. The alert will likewise consist of a requirement for the customer to pay the ransom money.

Technical details

File Info:

crc32: 4A860526
md5: ca8d262eb8902950cbb1eb36f2f9eee8
name: CA8D262EB8902950CBB1EB36F2F9EEE8.mlw
sha1: f5ff6db4c439f663de663886cce9bdc261d5e29e
sha256: ddb9f2c04db3f97240f16966369603f5363b6d4be4657a751d7fc7fb12c63083
sha512: 60c6ca6f75d08d900487b8f09bcbe28def7541dacee26196e9d04bdc3669be884da778eeed6dc2df53b51bd9c79e2d82665c541d4bd737cf727252ec60a8d7b8
ssdeep: 6144:7MLWCfv7np6D1NaWF88siwzYiPU8PDUuX3hQ:78WCfv7n21NaH9ZzYbAUGa
type: PE32 executable (DLL) (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.HJFW also known as:

GridinSoft Trojan.Ransom.Gen
ClamAV Win.Malware.Fcuj-9829288-0
FireEye Trojan.GenericKD.45670092
McAfee Trojan-FTJC!CA8D262EB890
Cylance Unsafe
VIPRE Win32.Malware!Drop
Sangfor Malware
K7AntiVirus Trojan ( 005773661 )
BitDefender Trojan.GenericKD.45670092
K7GW Trojan ( 005773661 )
Cyren W32/Trojan.DASC-6460
Symantec Trojan.Maltrec.TS
Avast Win32:DangerousSig [Trj]
Cynet Malicious (score: 85)
Kaspersky HEUR:Backdoor.Win32.QBot.gen
Alibaba Backdoor:Win32/Kryptik.f970c8c0
ViRobot Trojan.Win32.Z.Gencbl.305640.BY
MicroWorld-eScan Trojan.GenericKD.45670092
Rising Trojan.GenCBL!8.12138 (CLOUD)
Ad-Aware Trojan.GenericKD.45670092
Sophos Mal/Generic-R + Troj/Inject-GSB
Comodo Malware@#18rhrmyd7xd2r
F-Secure Trojan.TR/AD.Qbot.lyfna
DrWeb BackDoor.Qbot.582
TrendMicro TROJ_FRS.0NA103B421
McAfee-GW-Edition Artemis!Trojan
Emsisoft MalCert.A (A)
Avira TR/AD.Qbot.lyfna
MAX malware (ai score=88)
Kingsoft Win32.Troj.Banker.(kcloud)
Microsoft Trojan:Win32/Qakbot.SS!MTB
Gridinsoft Ransom.Win32.Wacatac.oa
Arcabit Trojan.Generic.D2B8DECC
ZoneAlarm HEUR:Backdoor.Win32.QBot.gen
GData Trojan.GenericKD.45670092
ALYac Trojan.Agent.QakBot
VBA32 Backdoor.QBot
Malwarebytes Backdoor.Qbot
Panda Trj/Genetic.gen
ESET-NOD32 a variant of Win32/Kryptik.HJFW
TrendMicro-HouseCall TROJ_FRS.0NA103B421
Ikarus Backdoor.QBot
Fortinet W32/GenCBL.XA!tr
AVG Win32:DangerousSig [Trj]
Qihoo-360 Win32/Backdoor.QakBot.HgkASOYA

How to remove Win32/Kryptik.HJFW ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
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The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

Run the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-fix.exe file to install GridinSoft Anti-Malware on your system.

Run Setup.exe

An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.

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Press “Install” button.

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Once installed, Anti-Malware will automatically run.

GridinSoft Anti-Malware Splash-Screen

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Win32/Kryptik.HJFW files and other malicious programs. This process can take a 20-30 minutes, so I suggest you periodically check on the status of the scan process.

GridinSoft Anti-Malware Scanning

Click on “Clean Now”.

When the scan has finished, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.

GridinSoft Anti-Malware Scan Result

Are Your Protected?

GridinSoft Anti-Malware will scan and clean your PC for free in the trial period. The free version offer real-time protection for first 2 days. If you want to be fully protected at all times – I can recommended you to purchase a full version:

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If the guide doesn’t help you to remove Win32/Kryptik.HJFW you can always ask me in the comments for getting help.

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About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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