Win32/Kryptik.GYJX

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

What is Win32/Kryptik.GYJX infection?

In this post you will find regarding the interpretation of Win32/Kryptik.GYJX and its unfavorable impact on your computer system. Such ransomware are a type of malware that is specified by on-line fraudulences to demand paying the ransom money by a sufferer.

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In the majority of the situations, Win32/Kryptik.GYJX infection will advise its targets to initiate funds move for the objective of reducing the effects of the amendments that the Trojan infection has introduced to the victim’s device.

Win32/Kryptik.GYJX 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.
  • Attempts to connect to a dead IP:Port (1 unique times);
  • 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.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • 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
  • Checks the presence of disk drives in the registry, possibly for anti-virtualization;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records situated on the sufferer’s hard disk — so the target can no more utilize the data;
  • Preventing routine access to the sufferer’s workstation;

Win32/Kryptik.GYJX

The most common channels whereby Win32/Kryptik.GYJX Ransomware are injected are:

  • By means of phishing emails;
  • As a consequence of user ending up on a source that organizes a destructive software program;

As quickly as the Trojan is effectively infused, it will either cipher the data on the sufferer’s PC or avoid the tool from operating in an appropriate manner – while additionally placing a ransom note that states the demand for the targets to impact the payment for the purpose of decrypting the records or bring back the documents system back to the initial problem. In most instances, the ransom note will turn up when the client reboots the PC after the system has already been harmed.

Win32/Kryptik.GYJX distribution channels.

In different corners of the world, Win32/Kryptik.GYJX expands by leaps and also bounds. Nevertheless, the ransom notes as well as techniques of obtaining the ransom money quantity might differ depending upon particular local (local) settings. The ransom notes and methods of extorting the ransom amount may vary depending on certain neighborhood (regional) settings.

Ransomware injection

As an example:

    Faulty alerts concerning unlicensed software program.

    In certain locations, the Trojans frequently wrongfully report having actually found some unlicensed applications enabled on the sufferer’s tool. The sharp then requires the customer to pay the ransom.

    Faulty declarations about prohibited material.

    In nations where software program piracy is much less popular, this method is not as efficient for the cyber scams. Additionally, the Win32/Kryptik.GYJX popup alert may incorrectly declare to be stemming from a law enforcement organization and also will report having located kid pornography or other prohibited information on the tool.

    Win32/Kryptik.GYJX popup alert might wrongly declare to be obtaining from a regulation enforcement establishment and also will certainly report having situated child pornography or other unlawful data on the gadget. The alert will likewise contain a requirement for the user to pay the ransom.

Technical details

File Info:

crc32: 5A9C0E19
md5: 59242767d0cf0ed2e47ba35003350c8d
name: winapp.exe
sha1: 257e0b9f7cbd173cc8ee3d24a327c926416beab3
sha256: 50ca73e510646ea1534f248099ce844f7f6178adb93055f8459ec07645f48e79
sha512: 0f8c57a81652ccc1b639fef90c1998e0a5fea565eb4e6ac02ad44446e245ced0052d2985d2156dfa2b99797eb120df4c85863539130be1d1e3d0c2ee2750be64
ssdeep: 6144:i0hpdz3H18FJLvm/ml9kVUCY9x1cxTO+LLGLCLQaib8BVmTBq:i0hzH6FJzumHk4olLwsmTs
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

legaltrademarks: Mensurability Dinnertime
comments: Cuddle Escalatory
originalfilename: Furbishes Fundamentals
companyname: Orgeat Walked
Translation: 0x0576 0x0689

Win32/Kryptik.GYJX also known as:

GridinSoftTrojan.Ransom.Gen
MicroWorld-eScanGen:Heur.Dreidel.DuW@vqTtzpai
FireEyeGeneric.mg.59242767d0cf0ed2
McAfeeGenericRXJF-RI!59242767D0CF
CylanceUnsafe
VIPRETrojan.Win32.Generic!BT
SangforMalware
K7AntiVirusTrojan ( 0055bd9f1 )
BitDefenderGen:Heur.Dreidel.DuW@vqTtzpai
K7GWTrojan ( 0055bd9f1 )
TrendMicroTROJ_GEN.R002C0PLA19
APEXMalicious
AvastWin32:Trojan-gen
GDataGen:Heur.Dreidel.DuW@vqTtzpai
KasperskyHEUR:Trojan.Win32.Generic
AlibabaTrojan:Win32/Kryptik.21a95483
NANO-AntivirusTrojan.Win32.Kryptik.gjbomo
AegisLabTrojan.Win32.Generic.4!c
RisingTrojan.GenKryptik!8.AA55 (TFE:4:ZNfRd7cYkCV)
Ad-AwareGen:Heur.Dreidel.DuW@vqTtzpai
SophosMal/Generic-S
ComodoMalware@#173bj1xz49d6y
F-SecureHeuristic.HEUR/AGEN.1022704
DrWebTrojan.Inject3.31705
ZillyaTrojan.Kryptik.Win32.1876850
Invinceaheuristic
McAfee-GW-EditionBehavesLike.Win32.Ransomware.gc
MaxSecureTrojan.Malware.7164915.susgen
Trapminemalicious.high.ml.score
EmsisoftGen:Heur.Dreidel.DuW@vqTtzpai (B)
IkarusTrojan.Win32.Crypt
CyrenW32/Trojan.OZTE-3188
JiangminTrojan.Generic.eitge
WebrootW32.Trojan.Gen
AviraHEUR/AGEN.1022704
Antiy-AVLTrojan/Win32.DefenseEvasion
Endgamemalicious (high confidence)
ArcabitTrojan.Dreidel.E630FF
ZoneAlarmHEUR:Trojan.Win32.Generic
MicrosoftTrojan:Win32/Wacatac.D!ml
AhnLab-V3Trojan/Win32.Generic.C3582962
Acronissuspicious
VBA32BScope.Trojan.Bomitag
ALYacGen:Heur.Dreidel.DuW@vqTtzpai
MAXmalware (ai score=100)
MalwarebytesTrojan.MalPack
PandaTrj/GdSda.A
ESET-NOD32a variant of Win32/Kryptik.GYJX
TrendMicro-HouseCallTROJ_GEN.R002C0PLA19
TencentWin32.Trojan.Generic.Suxo
SentinelOneDFI – Malicious PE
FortinetW32/Kryptik.FSFS!tr
BitDefenderThetaGen:NN.ZexaF.34090.DuW@aqTtzpai
AVGWin32:Trojan-gen
Paloaltogeneric.ml
CrowdStrikewin/malicious_confidence_90% (W)
Qihoo-360Generic/Trojan.5c2

How to remove Win32/Kryptik.GYJX 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 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.GYJX 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.GYJX 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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