Win32/Kryptik.GVJG

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

What is Win32/Kryptik.GVJG infection?

In this article you will certainly discover concerning the interpretation of Win32/Kryptik.GVJG as well as its unfavorable influence on your computer. Such ransomware are a kind of malware that is clarified by online fraudulences to demand paying the ransom by a target.

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In the majority of the instances, Win32/Kryptik.GVJG ransomware will certainly advise its targets to launch funds transfer for the purpose of neutralizing the modifications that the Trojan infection has presented to the victim’s gadget.

Win32/Kryptik.GVJG 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.
  • Presents an Authenticode digital signature;
  • 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.

  • Unconventionial language used in binary resources: Portuguese;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Attempts to repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
  • 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.
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Creates a 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 victim’s disk drive — so the victim can no longer utilize the information;
  • Preventing normal access 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.

Win32/Kryptik.GVJG

One of the most normal channels through which Win32/Kryptik.GVJG Ransomware are infused are:

  • By means of phishing emails;
  • As an effect of individual winding up on a resource that organizes a destructive software application;

As quickly as the Trojan is efficiently injected, it will certainly either cipher the information on the sufferer’s computer or avoid the device from working in an appropriate way – while likewise positioning a ransom note that discusses the demand for the sufferers to impact the payment for the function of decrypting the files or bring back the documents system back to the initial condition. In most instances, the ransom note will certainly turn up when the client restarts the COMPUTER after the system has actually already been harmed.

Win32/Kryptik.GVJG distribution networks.

In various corners of the world, Win32/Kryptik.GVJG grows by leaps as well as bounds. Nonetheless, the ransom money notes and also techniques of obtaining the ransom money amount might vary relying on certain regional (local) setups. The ransom money notes as well as methods of obtaining the ransom amount might differ depending on particular regional (regional) settings.

Ransomware injection

For example:

    Faulty informs regarding unlicensed software program.

    In specific areas, the Trojans typically wrongfully report having actually found some unlicensed applications enabled on the target’s gadget. The alert then demands the user to pay the ransom money.

    Faulty declarations about prohibited content.

    In nations where software application piracy is less preferred, this method is not as effective for the cyber scams. Conversely, the Win32/Kryptik.GVJG popup alert might incorrectly claim to be stemming from a law enforcement organization and also will report having located child porn or various other unlawful data on the gadget.

    Win32/Kryptik.GVJG popup alert might falsely declare to be acquiring from a law enforcement institution and also will certainly report having situated youngster porn or various other unlawful information on the tool. The alert will in a similar way contain a need for the customer to pay the ransom money.

Technical details

File Info:

crc32: ADB81F0B
md5: 94f407e8615ebe091ccf5035197ea1ea
name: 1c.jpg
sha1: 89c8938057a1b0514e3805536ccf3d2eb4acb1e0
sha256: 14fe0fa7e16253e53ce4c25616e08006ad09330bea8df9161a47b2815cd83067
sha512: 08ec9d99d753e9239d89a9081276329e51adb2d3414447b103eae8dcd21f02dabc86a39abd4f8405cec076dfdc74133796eb4117285add6bd13826de5c99e423
ssdeep: 24576:JAkh6SRcwxbc0x7A2JHQWP5Nx8ubFKD8L1QA/:JAe6Spxb9xc2JHXP3xBpD1Qw
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

eUp Software: Zx19x01FileDescription
Comments: @x10x01CompanyName
eUp Utilities 2014: @x0ex01ProductVersion
yright xa9 AVG Netherlands B. V. 2011: Lx12x01LegalTrademarks
eUp StartUp Optimizer: <x0ex01FileVersion
eUp Utilitiesx2122: Lx16x01ProductName
0.1000.340: D
Translation: 0x0407 0x04b0

Win32/Kryptik.GVJG also known as:

GridinSoftTrojan.Ransom.Gen
MicroWorld-eScanTrojan.GenericKD.32231067
FireEyeGeneric.mg.94f407e8615ebe09
CAT-QuickHealTrojan.Agent
McAfeeTrickbot-FRDP!94F407E8615E
MalwarebytesRansom.FileCryptor
VIPRETrojan.Win32.Generic!BT
K7AntiVirusTrojan ( 0054985e1 )
BitDefenderTrojan.GenericKD.32231067
K7GWTrojan ( 0054985e1 )
TrendMicroRansom.Win32.SHADE.SMA.hp
CyrenW32/Emotet.TZ.gen!Eldorado
SymantecPacked.Generic.459
APEXMalicious
AvastWin32:Malware-gen
GDataTrojan.GenericKD.32231067
KasperskyHEUR:Trojan.Win32.Generic
AlibabaTrojan:Win32/Fsysna.0c8fb956
NANO-AntivirusTrojan.Win32.Fsysna.fvjuut
AegisLabTrojan.Win32.Fsysna.4!c
RisingTrojan.Generic@ML.100 (RDML:rtjsjFdFfDtr0w/C70dTOQ)
Ad-AwareTrojan.GenericKD.32231067
SophosTroj/Xtbl-CY
ComodoTrojWare.Win32.Ransom.Shade.VP@8e1mt6
DrWebTrojan.DownLoader30.2143
ZillyaTrojan.Fsysna.Win32.18415
Invinceaheuristic
McAfee-GW-EditionTrickbot-FRDP!94F407E8615E
EmsisoftTrojan-Ransom.Shade (A)
F-ProtW32/Emotet.TZ.gen!Eldorado
WebrootW32.Malware.Gen
Antiy-AVLTrojan/Win32.TSGeneric
Endgamemalicious (high confidence)
ArcabitTrojan.Generic.D1EBCE9B
SUPERAntiSpywareRansom.Shade/Variant
ZoneAlarmHEUR:Trojan.Win32.Generic
MicrosoftTrojan:Win32/CryptInject.SD!MTB
AhnLab-V3Trojan/Win32.Shade.C3373163
Acronissuspicious
ALYacTrojan.Ransom.Shade
VBA32Malware-Cryptor.Kirgudu
CylanceUnsafe
PandaTrj/GdSda.A
ESET-NOD32a variant of Win32/Kryptik.GVJG
TrendMicro-HouseCallRansom.Win32.SHADE.SMA.hp
IkarusTrojan-Ransom.Crypted007
eGambitPE.Heur.InvalidSig
FortinetW32/Kryptik.GJFG!tr
AVGWin32:Malware-gen
Paloaltogeneric.ml
CrowdStrikewin/malicious_confidence_100% (W)
Qihoo-360HEUR/QVM10.2.151D.Malware.Gen

How to remove Win32/Kryptik.GVJG 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

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 install-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.GVJG 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.GVJG 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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