Win32/Kryptik.GNAI

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

What is Win32/Kryptik.GNAI infection?

In this article you will certainly discover about the meaning of Win32/Kryptik.GNAI and its unfavorable effect on your computer system. Such ransomware are a type of malware that is specified by on-line scams to demand paying the ransom money by a sufferer.

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Most of the cases, Win32/Kryptik.GNAI ransomware will instruct its victims to initiate funds transfer for the function of counteracting the amendments that the Trojan infection has introduced to the victim’s gadget.

Win32/Kryptik.GNAI 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.
  • 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.
  • Ciphering the papers located on the victim’s hard disk — so the target can no longer utilize the data;
  • Preventing routine access 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.GNAI

The most common channels through which Win32/Kryptik.GNAI Ransomware Trojans are infused are:

  • By ways of phishing e-mails;
  • As a consequence of user ending up on a resource that holds a malicious software application;

As quickly as the Trojan is effectively infused, it will certainly either cipher the data on the victim’s PC or protect against the tool from functioning in an appropriate way – while additionally positioning a ransom note that points out the need for the sufferers to effect the settlement for the purpose of decrypting the records or recovering the documents system back to the first problem. In the majority of circumstances, the ransom note will certainly come up when the client restarts the PC after the system has actually currently been damaged.

Win32/Kryptik.GNAI circulation channels.

In numerous edges of the globe, Win32/Kryptik.GNAI grows by leaps as well as bounds. Nonetheless, the ransom money notes and also techniques of obtaining the ransom amount might vary depending on particular neighborhood (local) setups. The ransom notes and methods of extorting the ransom quantity might vary depending on specific regional (regional) setups.

Ransomware injection

As an example:

    Faulty signals concerning unlicensed software application.

    In specific locations, the Trojans commonly wrongfully report having actually found some unlicensed applications allowed on the sufferer’s tool. The sharp then requires the user to pay the ransom money.

    Faulty statements regarding prohibited material.

    In countries where software program piracy is much less preferred, this method is not as effective for the cyber frauds. Alternatively, the Win32/Kryptik.GNAI popup alert may falsely claim to be originating from a police establishment as well as will report having situated kid porn or other unlawful data on the tool.

    Win32/Kryptik.GNAI popup alert may falsely declare to be deriving from a legislation enforcement institution as well as will certainly report having located kid porn or various other illegal information on the tool. The alert will likewise consist of a requirement for the individual to pay the ransom.

Technical details

File Info:

crc32: EC7B05F6
md5: b2a4b35a33eea41422b33fcb45f0e9fd
name: B2A4B35A33EEA41422B33FCB45F0E9FD.mlw
sha1: cd33c0b628200ec9990d3d60220e628643c4111f
sha256: 7b772b2ea7144bc747a26fde7e383feff6230704e575b687393cc03594af7f0e
sha512: 95a8f5543a23bd930d0d21272a1c678f5cc80f0097bd5763ab3a795a03724257bfb86077c7d0f1815cb9c300a78192dc56e8bbb2e3b8d3cd400b74ddbc9500c7
ssdeep: 1536:ckVaQnVlPK+p5ROaZTzeU8D8XPmgkkkkkrkkkkkrkkkkkKkkkkkrkkkkkrkkkkk:cWjp5RpByUW8X+p/c/cyF
type: PE32 executable (GUI) Intel 80386 system file, for MS Windows

Version Info:

InternalName: ztaze.ote

Win32/Kryptik.GNAI also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware2
K7AntiVirusTrojan ( 00541b6e1 )
Elasticmalicious (high confidence)
DrWebTrojan.PWS.Stealer.24943
CynetMalicious (score: 90)
ALYacTrojan.Brsecmon.1
CylanceUnsafe
ZillyaTrojan.Chapak.Win32.38295
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_90% (D)
AlibabaTrojan:Win32/Kryptik.8087e70d
K7GWTrojan ( 00541b6e1 )
Cybereasonmalicious.a33eea
ESET-NOD32a variant of Win32/Kryptik.GNAI
APEXMalicious
AvastWin32:Malware-gen
ClamAVWin.Packed.Azorult-7596348-0
KasperskyHEUR:Trojan.Win32.Generic
BitDefenderTrojan.Brsecmon.1
NANO-AntivirusTrojan.Win32.Androm.ekuags
MicroWorld-eScanTrojan.Brsecmon.1
TencentWin32.Trojan.Chapak.Pezc
Ad-AwareTrojan.Brsecmon.1
SophosMal/Generic-R + Mal/GandCrab-G
ComodoTrojWare.Win32.Ransom.Gandcrab.GC@7zlhhh
BitDefenderThetaGen:NN.ZexaF.34608.fu0@a4aFZAji
TrendMicroRansom.Win32.GANDCRAB.SMKLI.hp
McAfee-GW-EditionBehavesLike.Win32.Trojan.nh
FireEyeGeneric.mg.b2a4b35a33eea414
EmsisoftTrojan.Brsecmon.1 (B)
AviraHEUR/AGEN.1107191
eGambitUnsafe.AI_Score_98%
MicrosoftProgram:Win32/Wacapew.C!ml
GDataTrojan.Brsecmon.1
TACHYONTrojan/W32.Chapak.93696
AhnLab-V3Malware/Win32.Generic.C2854214
McAfeeGenericRXGP-RE!B2A4B35A33EE
MAXmalware (ai score=81)
VBA32BScope.Trojan.Fuerboos
MalwarebytesTrojan.MalPack
PandaTrj/Genetic.gen
TrendMicro-HouseCallRansom.Win32.GANDCRAB.SMKLI.hp
RisingTrojan.Fuerboos!8.EFC8 (CLOUD)
YandexTrojan.GenAsa!YE8NooLsZ2w
IkarusTrojan.Inject
MaxSecureRansomeware.CRAB.gen
FortinetW32/Kryptik.GNAQ!tr
AVGWin32:Malware-gen
Paloaltogeneric.ml
Qihoo-360Win32/Trojan.7b1

How to remove Win32/Kryptik.GNAI virus?

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.GNAI 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.GNAI 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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