Win32/Kryptik.FWLX

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is Win32/Kryptik.FWLX infection?

In this article you will locate about the definition of Win32/Kryptik.FWLX and its negative impact on your computer system. Such ransomware are a type of malware that is clarified by on the internet scams to require paying the ransom money by a sufferer.

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In the majority of the situations, Win32/Kryptik.FWLX infection will instruct its targets to start funds move for the objective of neutralizing the changes that the Trojan infection has presented to the sufferer’s gadget.

Win32/Kryptik.FWLX Summary

These adjustments 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.
  • 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;
  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • 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;
  • 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
  • Creates a copy of itself;
  • Creates a slightly modified copy of itself;
  • Ciphering the records found on the target’s hard disk drive — so the target can no more make use of the data;
  • Preventing normal accessibility to the target’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.FWLX

The most normal networks whereby Win32/Kryptik.FWLX are infused are:

  • By ways of phishing e-mails;
  • As a repercussion of individual winding up on a resource that holds a destructive software application;

As quickly as the Trojan is effectively infused, it will either cipher the information on the target’s computer or prevent the gadget from functioning in a correct way – while also putting a ransom money note that discusses the requirement for the sufferers to impact the settlement for the function of decrypting the documents or bring back the file system back to the preliminary problem. In many circumstances, the ransom money note will come up when the client reboots the PC after the system has actually currently been damaged.

Win32/Kryptik.FWLX distribution networks.

In various corners of the world, Win32/Kryptik.FWLX grows by jumps as well as bounds. Nevertheless, the ransom money notes and also techniques of extorting the ransom money amount may vary depending on particular local (local) settings. The ransom notes and also tricks of obtaining the ransom money amount might vary depending on certain neighborhood (regional) setups.

Ransomware injection

As an example:

    Faulty notifies concerning unlicensed software program.

    In particular locations, the Trojans usually wrongfully report having discovered some unlicensed applications made it possible for on the sufferer’s device. The sharp then requires the user to pay the ransom.

    Faulty statements regarding unlawful material.

    In nations where software application piracy is much less prominent, this technique is not as efficient for the cyber frauds. Conversely, the Win32/Kryptik.FWLX popup alert might incorrectly declare to be originating from a police establishment as well as will report having situated child porn or various other prohibited information on the device.

    Win32/Kryptik.FWLX popup alert might incorrectly assert to be obtaining from a law enforcement organization as well as will report having located kid pornography or various other unlawful information on the tool. The alert will in a similar way contain a need for the user to pay the ransom.

Technical details

File Info:

crc32: E5C8F373
md5: 39c6e3153662bb24a29fa5d555161395
name: 39C6E3153662BB24A29FA5D555161395.mlw
sha1: 013cd74c330a0b95e4ad842e46acc45503bea119
sha256: 69972b128b694e7ecb5c40e61e10c4d86d532f7f61a70ea0fd88a383ec8ae8be
sha512: 4919e05bdd8ebe5d13529bb656cefe325146d91f6b259da3bfb57af3d9589da75387289cbe0f095ddc34665941d11ccd913198db4e9ea4d9eb88bfbdbd08d621
ssdeep: 6144:9PnGyUCl8fE5vhYBMWdgOKq7PozAF1wpix0xXvJ5zN:9fGyUClwBZVwMF1wpiixfl
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.FWLX also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
Cynet Malicious (score: 100)
CAT-QuickHeal Ransom.Exxroute.A4
ALYac Gen:Heur.Ransom.Lukitos.1
Cylance Unsafe
Zillya Trojan.Generic.Win32.1246767
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba TrojanSpy:Win32/Ursnif.ac0dd783
K7GW Trojan ( 0051918c1 )
K7AntiVirus Trojan ( 0051918c1 )
Cyren W32/Ransom.GS.gen!Eldorado
Symantec Packed.Generic.493
ESET-NOD32 a variant of Win32/Kryptik.FWLX
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Packed.Ranapama-9763534-0
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Heur.Ransom.Lukitos.1
NANO-Antivirus Trojan.Win32.Kryptik.fbtbqr
SUPERAntiSpyware Ransom.Cerber/Variant
MicroWorld-eScan Gen:Heur.Ransom.Lukitos.1
Tencent Malware.Win32.Gencirc.11496c66
Ad-Aware Gen:Heur.Ransom.Lukitos.1
Sophos ML/PE-A + Mal/Elenoocka-E
Comodo TrojWare.Win32.Crypt.LKS@790qiy
BitDefenderTheta Gen:NN.ZexaF.34670.xqW@a8MrWOji
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_CERBER.SMALY0
McAfee-GW-Edition BehavesLike.Win32.Emotet.fc
FireEye Generic.mg.39c6e3153662bb24
Emsisoft Gen:Heur.Ransom.Lukitos.1 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Backdoor.Poison.aql
Webroot W32.Trojan.Gen
Avira HEUR/AGEN.1120891
Microsoft TrojanSpy:Win32/Ursnif.BM!MTB
Arcabit Trojan.Ransom.Lukitos.1
AegisLab Trojan.Win32.Ursnif.l!c
GData Win32.Trojan.Kryptik.IT
AhnLab-V3 Win-Trojan/Lukitus3.Exp
Acronis suspicious
McAfee Ransomware-GFC!39C6E3153662
MAX malware (ai score=100)
VBA32 Trojan.FakeAV.01657
Malwarebytes Malware.AI.398314526
Panda Trj/Genetic.gen
TrendMicro-HouseCall Ransom_CERBER.SMALY0
Rising Backdoor.Poison!8.2D7 (CLOUD)
Yandex Trojan.GenAsa!e5PA5elFt9I
Ikarus Trojan.Win32.Tofsee
Fortinet W32/Kryptik.FYKK!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Trojan.Generic.HxQBDgAA

How to remove Win32/Kryptik.FWLX 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

There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft2.

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.

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 will automatically start scanning your system for Win32/Kryptik.FWLX 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.FWLX you can always ask me in the comments for getting help.

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References

  1. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  2. More information about GridinSoft products: https://gridinsoft.com/comparison

About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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