Win32/Kryptik.GYYN

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

What is Win32/Kryptik.GYYN infection?

In this article you will discover about the definition of Win32/Kryptik.GYYN as well as its negative effect on your computer system. Such ransomware are a form of malware that is specified by on-line fraudulences to require paying the ransom money by a victim.

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Most of the instances, Win32/Kryptik.GYYN virus will instruct its sufferers to initiate funds move for the purpose of counteracting the modifications that the Trojan infection has presented to the sufferer’s device.

Win32/Kryptik.GYYN 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.
  • 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.

  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Attempts to delete volume shadow copies;
  • 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;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the papers found on the target’s hard drive — so the sufferer can no more make use of 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.
Similar behavior
Related domains
z.whorecord.xyz Trojan.Ransom.Crysis
a.tomx.xyz Trojan.Ransom.Crysis

Win32/Kryptik.GYYN

The most typical channels through which Win32/Kryptik.GYYN are infused are:

  • By ways of phishing e-mails;
  • As a consequence of customer winding up on a source that organizes a harmful software;

As soon as the Trojan is efficiently injected, it will certainly either cipher the data on the victim’s PC or protect against the gadget from functioning in a correct manner – while additionally positioning a ransom money note that mentions the demand for the targets to impact the repayment for the purpose of decrypting the records or bring back the file system back to the first condition. In most instances, the ransom money note will turn up when the client restarts the PC after the system has already been damaged.

Win32/Kryptik.GYYN circulation channels.

In different edges of the globe, Win32/Kryptik.GYYN grows by leaps as well as bounds. However, the ransom notes and techniques of obtaining the ransom money quantity may differ depending on specific local (regional) settings. The ransom money notes as well as techniques of obtaining the ransom money quantity might differ depending on particular neighborhood (regional) setups.

Ransomware injection

For example:

    Faulty notifies concerning unlicensed software program.

    In certain locations, the Trojans frequently wrongfully report having identified some unlicensed applications made it possible for on the sufferer’s device. The sharp after that demands the customer to pay the ransom money.

    Faulty statements regarding prohibited content.

    In countries where software application piracy is less prominent, this method is not as reliable for the cyber scams. Additionally, the Win32/Kryptik.GYYN popup alert may falsely declare to be stemming from a police establishment and will report having located kid porn or various other prohibited information on the tool.

    Win32/Kryptik.GYYN popup alert may falsely assert to be acquiring from a law enforcement institution and also will report having located kid pornography or various other prohibited information on the device. The alert will in a similar way include a requirement for the individual to pay the ransom money.

Technical details

File Info:

crc32: 5AE746EB
md5: 792f3bdd88a09c14d83d1729e1daaaa6
name: dmx777amx.exe
sha1: 3db459771b7b5d89271f2c40946f015a749edcf8
sha256: 15261902cbeea085d10a5b0a37b11ac259346bf62145095bc9b4427b343a0c41
sha512: d1e0f3f1c4e03c08cf62df380c6aa5be21b6d79cfb1903501aa76d7b54bf34191d4254ac0323291db7afda0c6de9032f8560908fe986f6c26439b168a429d508
ssdeep: 3072:R8nZhZ9SJV0u5wszT1AQnXD15fV29WE1DOJEARlEW:gZhSJ3vKQTt2sEeH
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

Translation: 0x0219 0x04e4

Win32/Kryptik.GYYN also known as:

GridinSoft Trojan.Ransom.Gen
MicroWorld-eScan Trojan.GenericKD.32769339
FireEye Generic.mg.792f3bdd88a09c14
McAfee RDN/Generic.grp
ALYac Trojan.Ransom.Crysis
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
AegisLab Trojan.Multi.Generic.4!c
Sangfor Malware
K7AntiVirus Trojan ( 003e58dd1 )
BitDefender Trojan.GenericKD.32769339
K7GW Trojan ( 003e58dd1 )
Cybereason malicious.71b7b5
BitDefenderTheta Gen:NN.ZexaF.32517.mu0@aONcazo
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Kryptik.GYYN
APEX Malicious
ClamAV Win.Packed.Tofsee-7413745-0
GData Trojan.GenericKD.32769339
Kaspersky Trojan.Win32.DelShad.brt
Alibaba Trojan:Win32/DelShad.e83ed3d6
NANO-Antivirus Trojan.Win32.Encoder.gjxyem
ViRobot Trojan.Win32.Z.Agent.207360.XT
Rising Trojan.Kryptik!1.BFC4 (CLASSIC)
Endgame malicious (high confidence)
F-Secure Trojan.TR/AD.Crysis.gua
DrWeb Trojan.Encoder.30234
Invincea heuristic
McAfee-GW-Edition BehavesLike.Win32.MultiPlug.dh
Trapmine suspicious.low.ml.score
Sophos Mal/Generic-S
Ikarus Trojan.Win32.Crypt
Cyren W32/Trojan.XMPM-7037
Jiangmin TrojanDownloader.Bandit.ayc
Webroot W32.Trojan.Gen
Avira TR/AD.Crysis.gua
MAX malware (ai score=99)
Arcabit Trojan.Generic.D1F4053B
AhnLab-V3 Malware/Win32.RL_Generic.R301847
ZoneAlarm Trojan.Win32.DelShad.brt
Microsoft Trojan:Win32/GandCrypt.GE!MTB
Acronis suspicious
VBA32 Malware-Cryptor.Limpopo
Ad-Aware Trojan.GenericKD.32769339
Malwarebytes Trojan.MalPack.GS
Panda Trj/GdSda.A
TrendMicro-HouseCall TROJ_GEN.R002C0DL219
SentinelOne DFI – Malicious PE
MaxSecure Trojan.Malware.300983.susgen
Fortinet Malicious_Behavior.SB
AVG FileRepMalware
Paloalto generic.ml
CrowdStrike win/malicious_confidence_90% (W)
Qihoo-360 HEUR/QVM10.2.8CC5.Malware.Gen

How to remove Win32/Kryptik.GYYN virus?

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

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 install-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.GYYN 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.GYYN 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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