Win32/Kryptik.GJKU

What is Win32/Kryptik.GJKU infection?

In this article you will certainly locate about the definition of Win32/Kryptik.GJKU as well as its adverse influence on your computer. Such ransomware are a type of malware that is specified by online scams to demand paying the ransom by a victim.

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Most of the instances, Win32/Kryptik.GJKU virus will instruct its sufferers to start funds transfer for the function of neutralizing the modifications that the Trojan infection has introduced to the target’s tool.

Win32/Kryptik.GJKU 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: Danish;
  • 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 modify proxy settings. This trick used for inject malware into connection between browser and server;
  • 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 records situated on the target’s hard disk — so the sufferer can no longer utilize the information;
  • 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.GJKU

One of the most typical networks whereby Win32/Kryptik.GJKU Ransomware Trojans are injected are:

  • By means of phishing emails;
  • As a repercussion of user winding up on a resource that organizes a destructive software application;

As soon as the Trojan is successfully injected, it will certainly either cipher the information on the sufferer’s computer or stop the gadget from operating in a correct way – while also putting a ransom money note that mentions the demand for the victims to impact the settlement for the purpose of decrypting the documents or recovering the documents system back to the preliminary condition. In many instances, the ransom money note will come up when the client reboots the PC after the system has actually already been damaged.

Win32/Kryptik.GJKU distribution networks.

In numerous corners of the globe, Win32/Kryptik.GJKU grows by leaps and also bounds. However, the ransom notes and also methods of extorting the ransom money quantity may differ relying on particular neighborhood (local) setups. The ransom money notes and methods of obtaining the ransom money amount might differ depending on certain regional (regional) settings.

Ransomware injection

For instance:

    Faulty notifies regarding unlicensed software.

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

    Faulty statements concerning prohibited web content.

    In countries where software piracy is less prominent, this technique is not as efficient for the cyber frauds. Conversely, the Win32/Kryptik.GJKU popup alert may falsely claim to be stemming from a police institution and also will certainly report having situated youngster pornography or various other prohibited data on the gadget.

    Win32/Kryptik.GJKU popup alert might wrongly claim to be deriving from a legislation enforcement establishment and also will report having located child porn or other prohibited information on the tool. The alert will likewise have a demand for the individual to pay the ransom money.

Technical details

File Info:

crc32: 2EA4D019
md5: ccf2df07688676497da8ee9deb76f6ba
name: CCF2DF07688676497DA8EE9DEB76F6BA.mlw
sha1: da6f69d4569fafd6d3a3cdf3ae4f1f519ca89f15
sha256: 813b08b4834289222dd28cc83acfe03598d1c315fe63aeb88b6b51b72d78c593
sha512: 2b4160a1941469c5d1858332d51d134a1127d4ae5061ce15ada9bdf1fa755fbde25c1df3d3613c53a752522667b336e03d45bdec789e0bb4d93d3336069c1398
ssdeep: 3072:GHQYFjI71QqmtFUZigbw3gOCZqk7etMw/SdPf+qJVQ4Y:qB0lmLIBECZqkytM
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.GJKU also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 005398581 )
Elastic malicious (high confidence)
DrWeb Trojan.PWS.Stealer.24300
Cynet Malicious (score: 100)
CAT-QuickHeal Trojan.Mauvaise.SL1
ALYac Trojan.Ransom.GandCrab
Cylance Unsafe
Zillya Trojan.GenericKD.Win32.133486
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Trojan:Win32/Kryptik.2595c0b2
K7GW Trojan ( 005398581 )
Cybereason malicious.768867
Cyren W32/Midie.HVHD-2534
Symantec Packed.Generic.525
ESET-NOD32 a variant of Win32/Kryptik.GJKU
APEX Malicious
Avast Win32:Malware-gen
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Trojan.Ransom.Hermes.C
NANO-Antivirus Trojan.Win32.Filecoder.fhkiin
MicroWorld-eScan Trojan.Ransom.Hermes.C
Tencent Win32.Trojan.Generic.Tdpi
Ad-Aware Trojan.Ransom.Hermes.C
Sophos Mal/Generic-S
Comodo Application.Win32.IStartSurf.PS@8c4m91
BitDefenderTheta Gen:NN.ZexaF.34628.juW@a83CF9kO
VIPRE Trojan.Win32.Generic!BT
TrendMicro Mal_HPGen-37b
McAfee-GW-Edition BehavesLike.Win32.Trojan.ch
FireEye Generic.mg.ccf2df0768867649
Emsisoft Trojan.Ransom.Hermes.C (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Blocker.iuq
Avira HEUR/AGEN.1138680
eGambit Unsafe.AI_Score_55%
Kingsoft Win32.Troj.Generic_a.a.(kcloud)
Microsoft Trojan:Win32/Glupteba!ml
Arcabit Trojan.Ransom.Hermes.C
AegisLab Trojan.Multi.Generic.4!c
GData Trojan.Ransom.Hermes.C
AhnLab-V3 Win-Trojan/Gandcrab04.Exp
Acronis suspicious
McAfee Packed-FJR!CCF2DF076886
MAX malware (ai score=100)
VBA32 BScope.Trojan.Encoder
Panda Trj/Genetic.gen
TrendMicro-HouseCall Mal_HPGen-37b
Rising Malware.Undefined!8.C (CLOUD)
Yandex Trojan.GenAsa!O12R3RUNSrQ
Ikarus Trojan.Win32.Krypt
MaxSecure Ransomeware.CRAB.gen
Fortinet W32/Kryptik.GJID!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Hermes.HwoCoaMA

How to remove Win32/Kryptik.GJKU 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.GJKU 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.GJKU 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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