Win32/Kryptik.GFIV

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

What is Win32/Kryptik.GFIV infection?

In this article you will locate regarding the interpretation of Win32/Kryptik.GFIV and also its adverse impact on your computer system. Such ransomware are a kind of malware that is clarified by on the internet scams to demand paying the ransom money by a sufferer.

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Most of the situations, Win32/Kryptik.GFIV ransomware will advise its sufferers to launch funds transfer for the objective of counteracting the changes that the Trojan infection has presented to the sufferer’s device.

Win32/Kryptik.GFIV Summary

These adjustments can be as complies with:

  • 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.

  • Performs some HTTP requests;
  • 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
  • Checks the CPU name from 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 drive — so the target can no longer utilize the data;
  • Preventing routine accessibility 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.
Similar behavior
Related domains
ipv4bot.whatismyipaddress.com Ransom:Win32/GandCrab.ali1020003
ns1.corp-servers.ru Ransom:Win32/GandCrab.ali1020003
zonealarm.bit Ransom:Win32/GandCrab.ali1020003
ns2.corp-servers.ru Ransom:Win32/GandCrab.ali1020003
ransomware.bit Ransom:Win32/GandCrab.ali1020003

Win32/Kryptik.GFIV

The most typical channels whereby Win32/Kryptik.GFIV Trojans are injected are:

  • By ways of phishing emails;
  • As a repercussion of customer winding up on a resource that hosts a malicious software application;

As quickly as the Trojan is effectively infused, it will either cipher the data on the sufferer’s PC or stop the tool from working in a correct manner – while also putting a ransom money note that mentions the need for the sufferers to effect the repayment for the purpose of decrypting the records or bring back the file system back to the initial condition. In many instances, the ransom note will certainly show up when the client restarts the PC after the system has already been harmed.

Win32/Kryptik.GFIV distribution networks.

In numerous corners of the world, Win32/Kryptik.GFIV grows by leaps and also bounds. Nonetheless, the ransom money notes as well as tricks of obtaining the ransom money quantity may vary depending on particular neighborhood (regional) setups. The ransom money notes and also techniques of obtaining the ransom money amount might vary depending on particular neighborhood (local) setups.

Ransomware injection

For instance:

    Faulty signals regarding unlicensed software program.

    In certain locations, the Trojans usually wrongfully report having actually detected some unlicensed applications allowed on the sufferer’s gadget. The sharp after that requires the individual to pay the ransom.

    Faulty declarations regarding illegal content.

    In countries where software application piracy is much less preferred, this method is not as efficient for the cyber scams. Alternatively, the Win32/Kryptik.GFIV popup alert might wrongly declare to be originating from a law enforcement organization and will report having situated kid porn or other unlawful data on the tool.

    Win32/Kryptik.GFIV popup alert might wrongly assert to be acquiring from a law enforcement organization as well as will report having located child porn or various other unlawful information on the tool. The alert will similarly have a requirement for the customer to pay the ransom money.

Technical details

File Info:

crc32: 7FF28537
md5: d3f75a67433580117ee3744601095b08
name: D3F75A67433580117EE3744601095B08.mlw
sha1: 51ae8f9ccfe0c56f94548afdcdffe989c35de528
sha256: 4e60bd0d7f2ec585848a48c0290031e058581878d19d40ddbf188f990a033325
sha512: 545d9256be28b49e3b8f1f3a7a8ec55d767b617f2f3fa396039584c83d1cf4950719178e457c62166ad62095e6a0efb0fd4e34aed9e3114d3e4727a53d1f6b34
ssdeep: 3072:DlCPpJiqJExy1sJMykKck4MjeJF8GJirKgERdC1/vJqMk8K:hChJfJE5O7Kck4MjeJF8GsrynC5vgf8K
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.GFIV also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.GenericKDZ.43402
FireEye Generic.mg.d3f75a6743358011
CAT-QuickHeal Trojan.Chapak.ZZ5
McAfee GenericRXES-IR!D3F75A674335
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
AegisLab Trojan.Win32.Chapak.4!c
Sangfor Win.Packed.Gandcrab-6552923-4
K7AntiVirus Trojan ( 003e58dd1 )
BitDefender Trojan.GenericKDZ.43402
K7GW Trojan ( 003e58dd1 )
Cybereason malicious.743358
Cyren W32/S-9eec4df2!Eldorado
Symantec Packed.Generic.525
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Packed.Gandcrab-6502434-0
Kaspersky HEUR:Trojan.Win32.Generic
Alibaba Ransom:Win32/GandCrab.ali1020003
NANO-Antivirus Trojan.Win32.Chapak.ezscmj
ViRobot Trojan.Win32.GandCrab.Gen.A
Ad-Aware Trojan.GenericKDZ.43402
Sophos Mal/Generic-R + Mal/Agent-AUL
Comodo TrojWare.Win32.Crypt.JK@7m7khb
F-Secure Heuristic.HEUR/AGEN.1117310
DrWeb Trojan.Encoder.24384
Zillya Backdoor.Mokes.Win32.1161
TrendMicro Ransom.Win32.GANDCRAB.SMLA.hp
McAfee-GW-Edition BehavesLike.Win32.Generic.dc
Emsisoft Trojan.GenericKDZ.43402 (B)
Ikarus Trojan.Crypt
Jiangmin Trojan.Scar.lts
Avira HEUR/AGEN.1117310
MAX malware (ai score=99)
Antiy-AVL Trojan/Win32.TSGeneric
Microsoft Trojan:Win32/GandCrypt.PVC!MTB
Arcabit Trojan.Generic.DA98A
SUPERAntiSpyware Trojan.Agent/Gen-Kryptik
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Trojan.GenericKDZ.43402
Cynet Malicious (score: 100)
AhnLab-V3 Win-Trojan/Gandcrab.Exp
Acronis suspicious
BitDefenderTheta Gen:NN.ZexaF.34590.nuX@aa3pPrki
ALYac Trojan.GenericKDZ.43402
TACHYON Ransom/W32.GandCrab
VBA32 BScope.Trojan.Chapak
Malwarebytes Trojan.MalPack
Panda Trj/Genetic.gen
Zoner Trojan.Win32.67755
ESET-NOD32 a variant of Win32/Kryptik.GFIV
TrendMicro-HouseCall Ransom.Win32.GANDCRAB.SMLA.hp
Rising Trojan.Kryptik!8.8 (CLOUD)
Yandex Trojan.GenAsa!0AVsmGpGJcQ
SentinelOne Static AI – Malicious PE
MaxSecure Ransomeware.CRAB.gen
Fortinet W32/Kryptik.HCIM!tr
AVG Win32:Malware-gen
Paloalto generic.ml
CrowdStrike win/malicious_confidence_100% (W)
Qihoo-360 Win32/Trojan.Generic.HwoCeY4A

How to remove Win32/Kryptik.GFIV 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.GFIV 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.GFIV 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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