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

What is Win32/Kryptik.FZWY infection?

In this short article you will certainly find concerning the definition of Win32/Kryptik.FZWY and also its negative influence on your computer. Such ransomware are a kind of malware that is elaborated by on the internet fraudulences to demand paying the ransom by a target.

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In the majority of the instances, Win32/Kryptik.FZWY ransomware will certainly advise its victims to initiate funds move for the objective of reducing the effects of the amendments that the Trojan infection has introduced to the victim’s gadget.

Win32/Kryptik.FZWY Summary

These adjustments can be as follows:

  • 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;
  • 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;
  • Collects information to fingerprint the system. There are behavioral human characteristics that can be used to digitally identify a person to grant access to systems, devices, or data. Unlike passwords and verification codes, fingerprints are fundamental parts of user’s identities. Among the threats blocked on biometric data processing and storage systems is spyware, the malware used in phishing attacks (mostly spyware downloaders and droppers), ransomware, and Banking Trojans as posing the greatest danger.
  • Ciphering the documents located on the target’s hard disk drive — so the victim can no more use the information;
  • Preventing regular 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.


One of the most typical channels whereby Win32/Kryptik.FZWY Trojans are infused are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As an effect of individual winding up on a resource that organizes a destructive software application;

As soon as the Trojan is successfully injected, it will certainly either cipher the information on the target’s computer or avoid the device from operating in an appropriate way – while additionally positioning a ransom note that states the need for the victims to effect the settlement for the objective of decrypting the records or bring back the documents system back to the preliminary condition. In many instances, the ransom note will certainly turn up when the customer restarts the PC after the system has currently been damaged.

Win32/Kryptik.FZWY distribution networks.

In various corners of the world, Win32/Kryptik.FZWY grows by jumps as well as bounds. However, the ransom money notes and also methods of obtaining the ransom quantity may differ depending upon certain regional (regional) settings. The ransom notes and also tricks of obtaining the ransom money quantity might differ depending on certain regional (regional) setups.

Ransomware injection

For example:

    Faulty alerts regarding unlicensed software program.

    In certain locations, the Trojans often wrongfully report having actually found some unlicensed applications made it possible for on the target’s tool. The sharp after that demands the user to pay the ransom money.

    Faulty declarations regarding unlawful web content.

    In countries where software piracy is less prominent, this approach is not as reliable for the cyber frauds. Additionally, the Win32/Kryptik.FZWY popup alert might wrongly declare to be stemming from a law enforcement establishment as well as will certainly report having located youngster porn or various other unlawful information on the gadget.

    Win32/Kryptik.FZWY popup alert might falsely claim to be acquiring from a regulation enforcement institution as well as will report having situated child pornography or other prohibited data on the device. The alert will similarly include a demand for the user to pay the ransom money.

Technical details

File Info:

crc32: 5D4A062E
md5: 9363969ac153ad3cefa1239cc8f50cbd
name: 9363969AC153AD3CEFA1239CC8F50CBD.mlw
sha1: a73c0ded265f1407dd04425e1ce5ae633204909c
sha256: 268e355608923e3d28788869bc847c486867d934d4a5c4da11914154bf682152
sha512: 2c8cd3b6b88ed00cffd9eed7f376f84827665e04f433d26ece6966e70a20d58a62983ed4e5c4e3939648cc3a667f2b25dbd0771abc842d10434dfbd618c4e3bd
ssdeep: 6144:+S1DWM+rOIklNqojE8dYW7/zsDrSXMElVxzBQX/zB39:+7M+rKlNq0EyHoDeXnlV5BQl39
type: MS-DOS executable, MZ for MS-DOS

Version Info:

0: [No Data]

Win32/Kryptik.FZWY also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
MicroWorld-eScan GenPack:Trojan.Ransom.Sage.O
McAfee Generic.bbi
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
Sangfor Ransom.Win32.Zerber.ebxx
K7AntiVirus Trojan ( 005047df1 )
BitDefender GenPack:Trojan.Ransom.Sage.O
K7GW Trojan ( 005047df1 )
Cybereason malicious.ac153a
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast FileRepMalware
Kaspersky Trojan-Ransom.Win32.Zerber.ebxx
Alibaba Ransom:Win32/Zerber.37935111
NANO-Antivirus Trojan.Win32.Zerber.epdjqz
AegisLab Trojan.Win32.Zerber.j!c
Ad-Aware GenPack:Trojan.Ransom.Sage.O
Emsisoft GenPack:Trojan.Ransom.Sage.O (B)
Comodo Malware@#32x9yjw4fr3zz
DrWeb Trojan.Encoder.11198
Zillya Trojan.Zerber.Win32.3004
TrendMicro Ransom_CERBER.F117EM
Sophos ML/PE-A
SentinelOne Static AI – Malicious PE
GData GenPack:Trojan.Ransom.Sage.O
MAX malware (ai score=100)
AhnLab-V3 Trojan/Win32.Zerber.C2288214
Microsoft Ransom:Win32/Cerber!rfn
Cynet Malicious (score: 100)
ESET-NOD32 a variant of Win32/Kryptik.FZWY
Acronis suspicious
BitDefenderTheta Gen:NN.ZexaF.34608.smqaaSjr6xgi
ALYac GenPack:Trojan.Ransom.Sage.O
VBA32 BScope.Trojan-Ransom.Zerber
Malwarebytes Malware.Heuristic.1003
Panda Trj/CI.A
TrendMicro-HouseCall Ransom_CERBER.F117EM
Tencent Win32.Trojan.Raas.Auto
Yandex Trojan.Zerber!hjQeJke+nbI
Ikarus Trojan.Win32.Filecoder
Fortinet W32/Zerber.EBXX!tr
Webroot W32.Ransom.Gen
AVG FileRepMalware
CrowdStrike win/malicious_confidence_90% (D)
Qihoo-360 Win32/Ransom.Cerber.HxIBar8A

How to remove Win32/Kryptik.FZWY 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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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.FZWY 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.FZWY you can always ask me in the comments for getting help.

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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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