Win32/Kryptik.GJUD

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

What is Win32/Kryptik.GJUD infection?

In this article you will discover about the meaning of Win32/Kryptik.GJUD as well as its unfavorable effect on your computer. Such ransomware are a kind of malware that is elaborated by online scams to require paying the ransom money by a victim.

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In the majority of the instances, Win32/Kryptik.GJUD infection will certainly instruct its sufferers to launch funds move for the function of neutralizing the modifications that the Trojan infection has introduced to the victim’s gadget.

Win32/Kryptik.GJUD 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.
  • Unconventionial language used in binary resources: Faeroese;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Exhibits possible ransomware file modification behavior;
  • 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.
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Ciphering the papers situated on the target’s hard disk drive — so the sufferer can no more use the data;
  • Preventing regular accessibility to the target’s workstation;

Win32/Kryptik.GJUD

The most typical networks whereby Win32/Kryptik.GJUD Trojans are infused are:

  • By means of phishing emails;
  • As a consequence of individual ending up on a source that hosts a malicious software application;

As quickly as the Trojan is efficiently infused, it will either cipher the data on the target’s computer or prevent the device from working in a correct fashion – while also putting a ransom note that states the need for the victims to impact the repayment for the objective of decrypting the records or bring back the documents system back to the first problem. In most instances, the ransom note will come up when the customer restarts the COMPUTER after the system has already been harmed.

Win32/Kryptik.GJUD distribution networks.

In various corners of the world, Win32/Kryptik.GJUD grows by leaps and also bounds. Nonetheless, the ransom money notes and also tricks of extorting the ransom money quantity may differ depending upon certain local (regional) settings. The ransom money notes and also tricks of obtaining the ransom amount might vary depending on specific local (local) setups.

Ransomware injection

For instance:

    Faulty signals regarding unlicensed software program.

    In specific locations, the Trojans typically wrongfully report having actually detected some unlicensed applications enabled on the victim’s tool. The alert then demands the user to pay the ransom.

    Faulty statements about illegal content.

    In nations where software piracy is less prominent, this method is not as effective for the cyber frauds. Conversely, the Win32/Kryptik.GJUD popup alert might wrongly assert to be stemming from a law enforcement establishment and will report having situated kid pornography or other unlawful data on the tool.

    Win32/Kryptik.GJUD popup alert might wrongly assert to be obtaining from a legislation enforcement establishment as well as will certainly report having situated kid pornography or various other prohibited data on the gadget. The alert will similarly consist of a demand for the customer to pay the ransom money.

Technical details

File Info:

crc32: 21882CF4
md5: 648af4d96338b6e87d5cb2491e690941
name: 648AF4D96338B6E87D5CB2491E690941.mlw
sha1: f256fc425f82ec6c3b897914fcd951d37250f1bc
sha256: 7ade678842d8a78e9ba0c8508e3a9dc4c05238e80535031b6ef80a2c77a7ce52
sha512: 181809e667126677fd836a42cd7f00fdcc6954644d27d320d5070273249427577883bb8e6e96c8e456fe0466171eabe1f23a5badedd69e94564b843bee616035
ssdeep: 6144:+aa8OsMBu/NMHMzDoAOcifuALMIXtQlz:+a9Bz9DoFmAryz
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

FileVersion: 8.4.3.12

Win32/Kryptik.GJUD also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0053d5971 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.25932
Cynet Malicious (score: 100)
ALYac Trojan.Ransom.GandCrab
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_80% (D)
Alibaba Trojan:Win32/Kryptik.d3464ba6
K7GW Trojan ( 0053d5971 )
Cybereason malicious.96338b
Symantec Packed.Generic.525
ESET-NOD32 a variant of Win32/Kryptik.GJUD
APEX Malicious
Avast Win32:MalwareX-gen [Trj]
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Ransom.GandCrab.1870
NANO-Antivirus Trojan.Win32.GandCrypt.fhrqjz
ViRobot Trojan.Win32.R.Agent.254464.L
MicroWorld-eScan Gen:Variant.Ransom.GandCrab.1870
Tencent Win32.Trojan.Generic.Wogg
Ad-Aware Gen:Variant.Ransom.GandCrab.1870
Sophos Mal/Generic-S + Mal/GandCrab-B
Comodo TrojWare.Win32.Ransom.Gandcrab.GJ@7tcda3
F-Secure Trojan.TR/GandCrab.glt
BitDefenderTheta Gen:NN.ZexaF.34608.pu0@aSU8LMgG
McAfee-GW-Edition BehavesLike.Win32.Generic.dc
FireEye Generic.mg.648af4d96338b6e8
Emsisoft Gen:Variant.Ransom.GandCrab.1870 (B)
SentinelOne Static AI – Malicious PE
Avira TR/GandCrab.glt
eGambit Unsafe.AI_Score_99%
Antiy-AVL Trojan[Ransom]/Win32.GandCrypt
Microsoft Ransom:Win32/Genasom
Arcabit Trojan.Ransom.GandCrab.D74E
SUPERAntiSpyware Trojan.Agent/Gen-Kryptik
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Gen:Variant.Ransom.GandCrab.1870
AhnLab-V3 Win-Trojan/Gandcrab07.Exp
Acronis suspicious
McAfee Packed-FKN!648AF4D96338
MAX malware (ai score=100)
VBA32 TrojanPSW.Coins
Panda Trj/GdSda.A
Rising Malware.Obscure/Heur!1.9E03 (CLOUD)
Yandex Trojan.GenAsa!UPNmkLxTbVE
Ikarus Trojan-Ransom.GandCrab
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Kryptik.GJUV!tr.ransom
AVG Win32:MalwareX-gen [Trj]
Paloalto generic.ml
Qihoo-360 Win32/Trojan.c96

How to remove Win32/Kryptik.GJUD 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.

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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.GJUD 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.GJUD 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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