Win32/Kryptik.GNGV

Written by Robert Bailey

What is Win32/Kryptik.GNGV infection?

In this post you will discover regarding the definition of Win32/Kryptik.GNGV as well as its negative effect on your computer system. Such ransomware are a form of malware that is clarified by on the internet frauds to demand paying the ransom money by a victim.

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Most of the situations, Win32/Kryptik.GNGV infection will certainly instruct its sufferers to start funds move for the purpose of neutralizing the amendments that the Trojan infection has introduced to the victim’s tool.

Win32/Kryptik.GNGV 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.
  • The executable is compressed using UPX;
  • 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
  • Collects information about installed applications;
  • Creates a hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • Creates a copy of itself;
  • Ciphering the papers located on the target’s disk drive — so the target can no more use the information;
  • Preventing regular 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.GNGV

The most common channels where Win32/Kryptik.GNGV Trojans are infused are:

  • By ways of phishing emails;
  • As a repercussion of user ending up on a source that organizes a harmful software program;

As soon as the Trojan is successfully injected, it will either cipher the data on the target’s computer or avoid the device from working in a proper manner – while additionally putting a ransom money note that discusses the requirement for the targets to impact the settlement for the purpose of decrypting the records or bring back the data system back to the preliminary problem. In a lot of circumstances, the ransom money note will show up when the customer restarts the COMPUTER after the system has actually already been damaged.

Win32/Kryptik.GNGV distribution channels.

In various corners of the globe, Win32/Kryptik.GNGV grows by jumps and bounds. However, the ransom notes and techniques of extorting the ransom amount may vary relying on particular neighborhood (regional) setups. The ransom notes and methods of obtaining the ransom quantity might vary depending on specific regional (regional) settings.

Ransomware injection

As an example:

    Faulty notifies regarding unlicensed software application.

    In certain areas, the Trojans frequently wrongfully report having identified some unlicensed applications enabled on the sufferer’s gadget. The alert then requires the user to pay the ransom money.

    Faulty statements regarding prohibited web content.

    In countries where software application piracy is less prominent, this method is not as effective for the cyber fraudulences. Conversely, the Win32/Kryptik.GNGV popup alert may wrongly assert to be deriving from a police establishment and also will certainly report having situated youngster porn or various other unlawful information on the tool.

    Win32/Kryptik.GNGV popup alert may wrongly declare to be acquiring from a regulation enforcement institution and will certainly report having located kid porn or other prohibited data on the tool. The alert will similarly have a requirement for the user to pay the ransom.

Technical details

File Info:

crc32: C89E929A
md5: 35b3cf0e4853cebebb881f1e1417fb07
name: 35B3CF0E4853CEBEBB881F1E1417FB07.mlw
sha1: 2d1b7a678427d5429a75390e6bb6d97bb1437de9
sha256: 91672c1ba60b419ae54e44069f4f1c11b98c5190c6d65d2a1a5bed5b19871d06
sha512: 087811105c2ccb9abfae70c950b222cbd03950e1d3e1722c955ef0d9cf8da1a92b8954e3e7284697222cb8f20716fde9eddf80c6c9456fbfed5fe58b902c2c83
ssdeep: 24576:Cec0D67xXY+eU2I/Ymf23f63DtbbSxR6pch1KVtsAkDb2kW:v67xXY+eUXQmuC3DtbbSGXtsAkDb1W
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

LegalCopyright: xa9 Microsoft Corporation. All rights reserved.
InternalName: WUDFHost.exe
FileVersion: 6.1.7601.17514 (win7sp1_rtm.101119-1850)
CompanyName: Microsoft Corporation
ProductName: Microsoftxae Windowsxae Operating System
ProductVersion: 6.1.7601.17514
FileDescription: Windows Driver Foundation - User-mode Driver Framework Host Process
OriginalFilename: WUDFHost.exe
Translation: 0x0409 0x04b0

Win32/Kryptik.GNGV also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Backdoor ( 005328fd1 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.26601
Cynet Malicious (score: 100)
ALYac Trojan.Ransom.Shade
Cylance Unsafe
Zillya Trojan.Shade.Win32.900
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Ransom:Win32/Shade.3672eb95
K7GW Backdoor ( 005328fd1 )
Cybereason malicious.e4853c
Symantec Ransom.Troldesh
ESET-NOD32 a variant of Win32/Kryptik.GNGV
APEX Malicious
Avast Win32:Trojan-gen
ClamAV Win.Malware.Generickdz-9825606-0
Kaspersky Trojan-Ransom.Win32.Shade.pdm
BitDefender Trojan.GenericKDZ.52773
NANO-Antivirus Trojan.Win32.Shade.fkrqip
MicroWorld-eScan Trojan.GenericKDZ.52773
Tencent Win32.Trojan.Shade.Lkxn
Ad-Aware Trojan.GenericKDZ.52773
Sophos Mal/Generic-S + Mal/Emotet-Q
Comodo MalCrypt.Indus!@1qrzi1
BitDefenderTheta AI:Packer.4BFA3CB01F
VIPRE Trojan.Win32.Generic!BT
TrendMicro TrojanSpy.Win32.EMOTET.SMA
McAfee-GW-Edition BehavesLike.Win32.Generic.dc
FireEye Generic.mg.35b3cf0e4853cebe
Emsisoft Trojan.GenericKDZ.52773 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Shade.sa
Avira HEUR/AGEN.1120570
eGambit Unsafe.AI_Score_68%
Microsoft Ransom:Win32/Troldesh.A
Arcabit Trojan.Generic.DCE25
AegisLab Trojan.Win32.Shade.4!c
GData Trojan.GenericKDZ.52773
AhnLab-V3 Trojan/Win32.Gandcrab.C3050690
McAfee Artemis!35B3CF0E4853
VBA32 BScope.P2P-Worm.Palevo
Panda Trj/GdSda.A
TrendMicro-HouseCall TrojanSpy.Win32.EMOTET.SMA
Rising Ransom.Shade!8.12CC (CLOUD)
Ikarus Trojan-Ransom.Crypted007
Fortinet W32/GandCrab.D!tr.ransom
AVG Win32:Trojan-gen
Paloalto generic.ml
Qihoo-360 Win32/Backdoor.Emotet.HwsBEpsA

How to remove Win32/Kryptik.GNGV ransomware?

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

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.GNGV 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.GNGV 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/products/

About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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