Win32/Kryptik.GDVJ

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

What is Win32/Kryptik.GDVJ infection?

In this post you will discover concerning the meaning of Win32/Kryptik.GDVJ and also its adverse effect on your computer system. Such ransomware are a form of malware that is elaborated by online frauds to demand paying the ransom money by a sufferer.

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In the majority of the situations, Win32/Kryptik.GDVJ virus will instruct its targets to initiate funds move for the purpose of counteracting the modifications that the Trojan infection has introduced to the target’s tool.

Win32/Kryptik.GDVJ Summary

These alterations 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.

  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Deletes its original binary from disk;
  • 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 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;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records situated on the victim’s hard drive — so the victim can no more make use of the data;
  • Preventing routine access to the sufferer’s workstation;

Win32/Kryptik.GDVJ

The most common networks where Win32/Kryptik.GDVJ Trojans are injected are:

  • By ways of phishing emails;
  • As an effect of individual ending up on a resource that hosts a destructive software program;

As quickly as the Trojan is efficiently injected, it will either cipher the information on the target’s computer or prevent the tool from operating in an appropriate fashion – while additionally placing a ransom note that states the need for the sufferers to effect the repayment for the purpose of decrypting the papers or restoring the data system back to the initial condition. In the majority of circumstances, the ransom note will certainly show up when the client reboots the PC after the system has actually already been damaged.

Win32/Kryptik.GDVJ circulation networks.

In numerous corners of the world, Win32/Kryptik.GDVJ grows by leaps as well as bounds. Nevertheless, the ransom notes and techniques of obtaining the ransom quantity might vary relying on specific neighborhood (local) settings. The ransom notes and techniques of extorting the ransom money quantity may vary depending on certain neighborhood (regional) setups.

Ransomware injection

For example:

    Faulty notifies concerning unlicensed software application.

    In specific locations, the Trojans typically wrongfully report having actually spotted some unlicensed applications allowed on the victim’s tool. The sharp after that requires the customer to pay the ransom money.

    Faulty declarations concerning unlawful material.

    In nations where software program piracy is less preferred, this method is not as efficient for the cyber fraudulences. Additionally, the Win32/Kryptik.GDVJ popup alert may incorrectly claim to be originating from a police institution as well as will certainly report having located youngster porn or other unlawful information on the device.

    Win32/Kryptik.GDVJ popup alert may incorrectly assert to be obtaining from a legislation enforcement establishment and also will certainly report having situated youngster porn or other prohibited information on the tool. The alert will similarly have a demand for the customer to pay the ransom.

Technical details

File Info:

crc32: 8E33209D
md5: ba5ef63685b8d72768f90721fca58902
name: BA5EF63685B8D72768F90721FCA58902.mlw
sha1: ada364ee9a2953a5124832099f6a154102a2d895
sha256: 7bca3dd7728a6967fdb95ec57fd6eab81b4879275c68bf1a23351bfaab1a0a67
sha512: c4c5eb7ba6c0042e736dec9fe2b719396ca9f649a4ea80d77c26e6be50e7a83abe4b1c34beebd9eaeb35c54c109a6b9b9fb326c60293504d1e19b771c9ae37a3
ssdeep: 6144:UAC06qWobU6qP/nqq4XM6dyj+XzleSeeyhw:Ug6f4U6mnhKvo+jleSeeyhw
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

Translation: 0x0808 0x04b0

Win32/Kryptik.GDVJ also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusTrojan ( 003e58dd1 )
Elasticmalicious (high confidence)
DrWebBackDoor.IRC.Bot.3972
CynetMalicious (score: 100)
CAT-QuickHealTrojan.Chapak.ZZ5
CylanceUnsafe
ZillyaTrojan.Magni.Win32.11
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (D)
AlibabaRansom:Win32/Gandcrab.2a5d4383
K7GWAdware ( 004ef1551 )
Cybereasonmalicious.685b8d
CyrenW32/S-15f730e0!Eldorado
SymantecPacked.Generic.525
ESET-NOD32a variant of Win32/Kryptik.GDVJ
APEXMalicious
AvastWin32:Malware-gen
KasperskyHEUR:Trojan.Win32.Generic
BitDefenderTrojan.Emotet.Gen.3
NANO-AntivirusTrojan.Win32.Magni.eynguj
ViRobotTrojan.Win32.MyRansom.245760
SUPERAntiSpywareRansom.GandCrab/Variant
MicroWorld-eScanTrojan.Emotet.Gen.3
TencentMalware.Win32.Gencirc.114ce63d
Ad-AwareTrojan.Emotet.Gen.3
SophosMal/Generic-S + Mal/GandCrab-B
ComodoMalware@#1tqt3sqtxydmx
F-SecureHeuristic.HEUR/AGEN.1126869
BitDefenderThetaGen:NN.ZexaF.34608.ruW@a0kfqwhO
VIPRETrojan.Win32.Generic!BT
TrendMicroTSPY_FAREIT.QYBGA
McAfee-GW-EditionBehavesLike.Win32.Generic.dh
FireEyeGeneric.mg.ba5ef63685b8d727
EmsisoftTrojan.Emotet.Gen.3 (B)
SentinelOneStatic AI – Malicious PE
AviraHEUR/AGEN.1126869
Antiy-AVLTrojan/Win32.TSGeneric
MicrosoftRansom:Win32/Gandcrab.SF!MTB
ArcabitTrojan.Emotet.Gen.3
AegisLabTrojan.Multi.Generic.4!c
ZoneAlarmHEUR:Trojan.Win32.Generic
GDataTrojan.Emotet.Gen.3
AhnLab-V3Win-Trojan/Gandcrab02.Exp
Acronissuspicious
McAfeeTrojan-FPHN!BA5EF63685B8
MAXmalware (ai score=97)
VBA32BScope.Backdoor.IRC.Bot
MalwarebytesMachineLearning/Anomalous.94%
PandaTrj/Genetic.gen
TrendMicro-HouseCallTSPY_FAREIT.QYBGA
RisingMalware.Obscure/Heur!1.9E03 (CLOUD)
YandexTrojan.Scar!9TQTHpVmSb0
IkarusTrojan.Crypt
MaxSecureRansomeware.CRAB.gen
FortinetW32/Kryptik.HCUD!tr
AVGWin32:Malware-gen
Paloaltogeneric.ml
Qihoo-360Win32/Trojan.5a2

How to remove Win32/Kryptik.GDVJ 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.GDVJ 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.GDVJ 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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