Win32/Kryptik.FWJX

What is Win32/Kryptik.FWJX infection?

In this short article you will locate about the definition of Win32/Kryptik.FWJX and also its unfavorable effect on your computer system. Such ransomware are a form of malware that is specified by online fraudulences to require paying the ransom money by a sufferer.

Most of the instances, Win32/Kryptik.FWJX infection will instruct its sufferers to initiate funds move for the function of reducing the effects of the changes that the Trojan infection has actually introduced to the victim’s gadget.

Win32/Kryptik.FWJX Summary

These adjustments can be as follows:

  • 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.
  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • A process created a hidden window;
  • Unconventionial binary language: Portuguese (Brazil);
  • Unconventionial language used in binary resources: Portuguese (Brazilian);
  • 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
  • Exhibits possible ransomware file modification behavior;
  • Creates a hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Likely virus infection of existing system binary;
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records located on the target’s hard drive — so the sufferer can no longer utilize the information;
  • Preventing normal accessibility to the sufferer’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.

Win32/Kryptik.FWJX

One of the most common networks through which Win32/Kryptik.FWJX are injected are:

  • By ways of phishing e-mails;
  • As a repercussion of user ending up on a source that hosts a destructive software application;

As quickly as the Trojan is successfully injected, it will certainly either cipher the data on the sufferer’s PC or avoid the gadget from working in an appropriate way – while likewise placing a ransom money note that points out the demand for the sufferers to impact the repayment for the purpose of decrypting the files or recovering the documents system back to the first problem. In a lot of instances, the ransom money note will certainly show up when the customer restarts the PC after the system has actually currently been damaged.

Win32/Kryptik.FWJX distribution networks.

In various edges of the globe, Win32/Kryptik.FWJX grows by leaps and bounds. Nonetheless, the ransom money notes and methods of obtaining the ransom amount might differ relying on particular neighborhood (regional) setups. The ransom notes and tricks of obtaining the ransom quantity may differ depending on particular regional (regional) settings.

Ransomware injection

For example:

    Faulty informs about unlicensed software application.

    In specific locations, the Trojans typically wrongfully report having spotted some unlicensed applications made it possible for on the target’s device. The alert then demands the customer to pay the ransom.

    Faulty declarations about unlawful material.

    In nations where software piracy is much less preferred, this technique is not as effective for the cyber fraudulences. Additionally, the Win32/Kryptik.FWJX popup alert may wrongly claim to be deriving from a law enforcement establishment and also will report having located kid pornography or other prohibited information on the gadget.

    Win32/Kryptik.FWJX popup alert may incorrectly assert to be obtaining from a legislation enforcement institution and will report having located youngster pornography or various other unlawful data on the device. The alert will likewise contain a demand for the user to pay the ransom.

Technical details

File Info:

crc32: 54B4B86Emd5: 36324c10202f2c395e29007afc17a0c5name: 36324C10202F2C395E29007AFC17A0C5.mlwsha1: ef628a3713d9e3e62af9685aeb8cac2f6dae532asha256: 46e00958d58f176ba6c328d357b2283b4db5a0f4f8009f9279361c8018925449sha512: 6aee767175c29b49af629001f54753341ffb2555523f156e65ce48c1192705fc08f350fd15023527947afa8b24130f1e0c360b5886eb259b6cac1226e78e08a8ssdeep: 3072:X030XCIscLlj+ck45L8UQtYMQFpJU6EjhxFpPv5f3uPGwrKX3ZGC:Xje2jQCMQLJ56xrX5GPjoXtype: PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archive

Version Info:

LegalCopyright: Copyright 2014 SoftwareOfUse, Inc.FileVersion: 7.3.2CompanyName: SoftwareOfUse, Inc.Comments: http://www.SoftwareOfUse.comProductName: Network ConfiguratorProductVersion: 7.3.2FileDescription: Network ConfiguratorTranslation: 0x0416 0x04e4

Win32/Kryptik.FWJX also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Trojan ( 0053f8c51 )
DrWeb Trojan.PWS.Steam.14874
ALYac Trojan.NSIS.Ransom.AQ
Cylance Unsafe
Zillya Trojan.Purgen.Win32.82
CrowdStrike win/malicious_confidence_90% (W)
Alibaba Trojan:Win32/Predator.c89dba2e
K7GW Trojan ( 0053f8c51 )
Cybereason malicious.0202f2
Cyren W32/Skeeyah.JRFA-3838
Symantec Downloader
ESET-NOD32 a variant of Win32/Kryptik.FWJX
Zoner Trojan.Win32.63420
Avast Win32:NSISDropper-B [Drp]
Kaspersky HEUR:Trojan-Ransom.Win32.Encoder.gen
BitDefender Trojan.NSIS.Ransom.AQ
NANO-Antivirus Trojan.Win32.Encoder.fjnqse
MicroWorld-eScan Trojan.NSIS.Ransom.AQ
Tencent Win32.Trojan.Encoder.Ligo
Ad-Aware Trojan.NSIS.Ransom.AQ
Sophos Mal/Generic-S
Comodo Malware@#1roxwb26wyvue
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition Ransom-CryptXXX!36324C10202F
FireEye Trojan.NSIS.Ransom.AQ
Emsisoft Trojan.NSIS.Ransom.AQ (B)
Avira TR/AD.Petya.hlwrr
Microsoft Trojan:Win32/Predator.GJ!MTB
AegisLab Trojan.Win32.Encoder.4!c
GData Trojan.NSIS.Ransom.AQ
McAfee Ransom-CryptXXX!36324C10202F
MAX malware (ai score=88)
VBA32 Trojan-Ransom.Purgen
Panda Trj/CI.A
Fortinet W32/Injector.XG!tr
AVG Win32:NSISDropper-B [Drp]
Paloalto generic.ml

How to remove Win32/Kryptik.FWJX ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
Reasons why I would recommend GridinSoft1

Run the setup file.

Run Setup.exe
GridinSoft Anti-Malware Setup

Press “Install” button.

GridinSoft Anti-Malware Install

Once installed, Anti-Malware will automatically run.

GridinSoft Anti-Malware Splash-Screen

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware Scanning

Click on “Clean Now”.

GridinSoft Anti-Malware Scan Result

Are Your Protected?

Full version of GridinSoft

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

References

    About the author

    Robert Bailey

    Security engineer focused on malware behavior, removal workflows, and Windows hardening. Robert reviews threat articles for practical accuracy, checking detection names, symptoms, and cleanup steps before publication.

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