Win32/Kryptik.GFTT

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

What is Win32/Kryptik.GFTT infection?

In this post you will certainly discover concerning the meaning of Win32/Kryptik.GFTT as well as its unfavorable influence on your computer. Such ransomware are a form of malware that is elaborated by on-line frauds to require paying the ransom money by a sufferer.

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Most of the instances, Win32/Kryptik.GFTT ransomware will instruct its victims to launch funds transfer for the purpose of neutralizing the amendments that the Trojan infection has actually presented to the target’s tool.

Win32/Kryptik.GFTT Summary

These modifications 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.

  • 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
  • Attempts to identify installed AV products by installation directory;
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Creates a slightly modified copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files found on the target’s disk drive — so the target can no more utilize the information;
  • Preventing normal access 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
ipv4bot.whatismyipaddress.comRansom.GandCrab.MUE.YY5
ns1.corp-servers.ruRansom.GandCrab.MUE.YY5
zonealarm.bitRansom.GandCrab.MUE.YY5
ns2.corp-servers.ruRansom.GandCrab.MUE.YY5
ransomware.bitRansom.GandCrab.MUE.YY5

Win32/Kryptik.GFTT

One of the most normal networks where Win32/Kryptik.GFTT are infused are:

  • By ways of phishing e-mails;
  • As an effect of individual winding up on a resource that hosts a malicious software program;

As soon as the Trojan is successfully injected, it will either cipher the data on the victim’s PC or stop the device from functioning in an appropriate way – while additionally positioning a ransom note that discusses the need for the targets to impact the repayment for the function of decrypting the files or restoring the documents system back to the initial condition. In many circumstances, the ransom note will come up when the client restarts the COMPUTER after the system has actually already been harmed.

Win32/Kryptik.GFTT circulation channels.

In various edges of the world, Win32/Kryptik.GFTT grows by jumps as well as bounds. Nonetheless, the ransom money notes and also methods of extorting the ransom quantity might differ depending upon particular local (local) settings. The ransom notes as well as tricks of extorting the ransom money amount might vary depending on particular local (regional) settings.

Ransomware injection

As an example:

    Faulty informs about unlicensed software.

    In specific areas, the Trojans often wrongfully report having identified some unlicensed applications made it possible for on the victim’s tool. The sharp after that demands the user to pay the ransom.

    Faulty declarations about prohibited web content.

    In nations where software application piracy is less popular, this technique is not as efficient for the cyber scams. Conversely, the Win32/Kryptik.GFTT popup alert may falsely assert to be originating from a law enforcement organization and will report having located child porn or other prohibited information on the device.

    Win32/Kryptik.GFTT popup alert might falsely declare to be obtaining from a law enforcement institution as well as will certainly report having situated kid porn or other prohibited data on the tool. The alert will likewise have a need for the customer to pay the ransom.

Technical details

File Info:

crc32: F8887A7A
md5: e28a66754b7654492c52fe04b074cb10
name: E28A66754B7654492C52FE04B074CB10.mlw
sha1: 66eb75401adcdd195a12bf153741cab1d7f9e950
sha256: 4fe9abd806dfa2c053a68dfe9d6f3bcdcd0bd20ebdeb9e06411034545524f99e
sha512: 1989bd4fa18a058a454f6fb9e5a816425a073fe19a9bbe24706c79825c8b1897e13c7f22d8c5b4d49157c50cd41005e082f0004fd874c0771a3ad05ea5d5d19e
ssdeep: 3072:BaU4WuBRuhuAaixm4ECWET7UBUjdJdscWk9IQMXXyiFjF1uIl0bLfxN5N6Tyx0yt:x4lHwsBU5Jmjk9IQKz51udXvIyzx
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (C) 2017, gonpeprueb
InternalName: toofirtyless.exe
FileVersion: 5.0.0.0
ProductVersion: 12.0.0.0
Translation: 0x0809 0x04b0

Win32/Kryptik.GFTT also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
DrWebTrojan.Encoder.24384
MicroWorld-eScanTrojan.GenericKDZ.43612
FireEyeGeneric.mg.e28a66754b765449
CAT-QuickHealRansom.GandCrab.MUE.YY5
ALYacTrojan.GenericKDZ.43612
CylanceUnsafe
VIPRETrojan.Win32.Generic!BT
SangforWin.Packed.Gandcrab-6552923-4
K7AntiVirusTrojan ( 0053305e1 )
BitDefenderTrojan.GenericKDZ.43612
K7GWTrojan ( 0053305e1 )
Cybereasonmalicious.54b765
BitDefenderThetaGen:NN.ZexaF.34590.lu1@aqDD@fj
CyrenW32/S-f790963a!Eldorado
SymantecPacked.Generic.525
TrendMicro-HouseCallRansom.Win32.GANDCRAB.SMLA.hp
AvastWin32:RansomX-gen [Ransom]
ClamAVWin.Packed.Gandcrab-6552923-4
KasperskyHEUR:Trojan-Ransom.Win32.GandCrypt.gen
NANO-AntivirusTrojan.Win32.Encoder.fakqaj
ViRobotTrojan.Win32.GandCrab.Gen.A
AegisLabTrojan.Win32.GandCrypt.tpW5
RisingTrojan.Kryptik!1.B1B5 (CLASSIC)
Ad-AwareTrojan.GenericKDZ.43612
EmsisoftTrojan.Generic (A)
ComodoTrojWare.Win32.Ransom.GandCrab.BS@7m1cww
F-SecureHeuristic.HEUR/AGEN.1115888
ZillyaTrojan.GandCrypt.Win32.148
TrendMicroRansom.Win32.GANDCRAB.SMLA.hp
McAfee-GW-EditionBehavesLike.Win32.Generic.cc
SophosMal/Generic-R + Mal/Agent-AUL
IkarusTrojan-Ransom.GandCrab
JiangminTrojan.Chapak.gl
MaxSecureTrojan.Emotet.Gen.3
AviraHEUR/AGEN.1115888
MAXmalware (ai score=100)
Antiy-AVLTrojan/Win32.Chapak
MicrosoftRansom:Win32/GandCrab.AO
ArcabitTrojan.Generic.DAA5C
ZoneAlarmHEUR:Trojan-Ransom.Win32.GandCrypt.gen
GDataTrojan.GenericKDZ.43612
CynetMalicious (score: 100)
AhnLab-V3Win-Trojan/Gandcrab.Exp
Acronissuspicious
McAfeePacked-FCX!E28A66754B76
TACHYONRansom/W32.GandCrab
VBA32BScope.Trojan.Chapak
MalwarebytesTrojan.MalPack.Generic
PandaTrj/Genetic.gen
APEXMalicious
ESET-NOD32a variant of Win32/Kryptik.GFTT
TencentMalware.Win32.Gencirc.10b451e3
YandexTrojan.GenAsa!4BUzQikRZNo
SentinelOneStatic AI – Malicious PE
eGambitUnsafe.AI_Score_84%
FortinetW32/GenKryptik.CNAR!tr
AVGWin32:RansomX-gen [Ransom]
Paloaltogeneric.ml
CrowdStrikewin/malicious_confidence_100% (D)
Qihoo-360Win32/Trojan.Ransom.98c

How to remove Win32/Kryptik.GFTT 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.GFTT 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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Win32/Kryptik.GFTT 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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