Win32/Kryptik.GJNU

Written by Robert Bailey

What is Win32/Kryptik.GJNU infection?

In this article you will locate regarding the definition of Win32/Kryptik.GJNU and also its adverse influence on your computer system. Such ransomware are a type of malware that is specified by on-line scams to demand paying the ransom money by a sufferer.

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In the majority of the situations, Win32/Kryptik.GJNU ransomware will certainly instruct its victims to start funds transfer for the function of neutralizing the amendments that the Trojan infection has introduced to the victim’s tool.

Win32/Kryptik.GJNU Summary

These modifications 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.
  • Unconventionial language used in binary resources: Slovenian;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Collects information to fingerprint the system. There are behavioral human characteristics that can be used to digitally identify a person to grant access to systems, devices, or data. Unlike passwords and verification codes, fingerprints are fundamental parts of user’s identities. Among the threats blocked on biometric data processing and storage systems is spyware, the malware used in phishing attacks (mostly spyware downloaders and droppers), ransomware, and Banking Trojans as posing the greatest danger.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents found on the victim’s hard drive — so the victim can no longer make use of the data;
  • 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.

Win32/Kryptik.GJNU

One of the most regular channels whereby Win32/Kryptik.GJNU Ransomware are injected are:

  • By methods of phishing emails;
  • As a consequence of user winding up on a resource that hosts a malicious software application;

As quickly as the Trojan is efficiently injected, it will certainly either cipher the data on the victim’s PC or protect against the tool from functioning in an appropriate fashion – while likewise placing a ransom money note that discusses the requirement for the targets to effect the payment for the function of decrypting the documents or restoring the data system back to the first condition. In many instances, the ransom money note will come up when the customer reboots the COMPUTER after the system has actually already been harmed.

Win32/Kryptik.GJNU circulation channels.

In various edges of the world, Win32/Kryptik.GJNU grows by leaps as well as bounds. Nonetheless, the ransom money notes and also methods of obtaining the ransom money quantity may differ depending on certain neighborhood (regional) setups. The ransom notes and methods of extorting the ransom money quantity may differ depending on specific regional (regional) setups.

Ransomware injection

For instance:

    Faulty alerts concerning unlicensed software.

    In specific areas, the Trojans commonly wrongfully report having actually identified some unlicensed applications allowed on the victim’s device. The alert after that demands the user to pay the ransom money.

    Faulty declarations regarding illegal web content.

    In nations where software application piracy is less preferred, this method is not as reliable for the cyber fraudulences. Additionally, the Win32/Kryptik.GJNU popup alert might incorrectly claim to be stemming from a police organization and also will certainly report having situated youngster porn or various other illegal data on the gadget.

    Win32/Kryptik.GJNU popup alert might wrongly claim to be acquiring from a legislation enforcement institution and also will certainly report having situated kid porn or various 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: 4C85CE96
md5: f68c49a6959e2e612e2429833f3e5c49
name: F68C49A6959E2E612E2429833F3E5C49.mlw
sha1: acbeb4a89781b35affdc685090f044c6ae562318
sha256: 723d9cc9705952d934ead57091edc2d07cde8a0384381e5f10e89cf994699e31
sha512: 66a93b3de0ae89e9b4af626767710906e04052a198569cc65c393a9e9767bd7ed15353abf862084e2f2a0a8fad04f23c01c72b52bea141612d3480efbddad1e9
ssdeep: 3072:UGXpx5kZYUbEg9FppkqQU2epsRGLkQ6+qhPvBk0SASrDpC:UeiZNY6uUpsYLkV+qhBnSr
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

FileVersion: 3.7.9

Win32/Kryptik.GJNU also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 00516fdf1 )
Elastic malicious (high confidence)
DrWeb Trojan.PWS.Stealer.24300
MicroWorld-eScan Gen:Variant.Ransom.GandCrab.1605
CAT-QuickHeal Trojan.Chapak.ZZ6
ALYac Gen:Variant.Ransom.GandCrab.1605
Malwarebytes Trojan.MalPack
Zillya Trojan.Kryptik.Win32.1464089
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Trojan:Win32/Kryptik.c4f5c5bd
K7GW Trojan ( 00516fdf1 )
Cybereason malicious.6959e2
Cyren W32/Gandcrab.LTTW-0607
ESET-NOD32 a variant of Win32/Kryptik.GJNU
APEX Malicious
Avast Win32:Malware-gen
Cynet Malicious (score: 100)
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Ransom.GandCrab.1605
NANO-Antivirus Trojan.Win32.Filecoder.fhkjej
Tencent Win32.Trojan.Generic.Edno
Ad-Aware Gen:Variant.Ransom.GandCrab.1605
Sophos ML/PE-A + Mal/GandCrab-G
Comodo TrojWare.Win32.PSW.Coins.FS@7s47lc
BitDefenderTheta Gen:NN.ZexaF.34678.ku0@ayEcujfQ
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_GANDCRAB.SMALY-3
McAfee-GW-Edition BehavesLike.Win32.Trojan.ch
FireEye Generic.mg.f68c49a6959e2e61
Emsisoft Gen:Variant.Ransom.GandCrab.1605 (B)
Jiangmin Trojan.PSW.Coins.ama
Avira HEUR/AGEN.1140469
Microsoft Trojan:Win32/Occamy.C72
Gridinsoft Ransom.Win32.Gandcrab.oa!s1
Arcabit Trojan.Ransom.GandCrab.D645
SUPERAntiSpyware Trojan.Agent/Gen-Kryptik
GData Gen:Variant.Ransom.GandCrab.1605
AhnLab-V3 Win-Trojan/Gandcrab04.Exp
Acronis suspicious
McAfee Packed-FJN!F68C49A6959E
MAX malware (ai score=100)
VBA32 BScope.Trojan.Vigorf
Panda Trj/Genetic.gen
TrendMicro-HouseCall Ransom_GANDCRAB.SMALY-3
Rising Trojan.Vigorf!8.EAEA (CLOUD)
Yandex Trojan.GenAsa!rLiEpbiRLTs
SentinelOne Static AI – Suspicious PE
Fortinet W32/Kryptik.HCUD!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Trojan.Generic.HwoCEpsA

How to remove Win32/Kryptik.GJNU 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.GJNU 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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Full version of GridinSoft Anti-Malware

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