Win32/Kryptik.GKDT

What is Win32/Kryptik.GKDT infection?

In this short article you will certainly discover concerning the definition of Win32/Kryptik.GKDT and also its negative impact on your computer system. Such ransomware are a form of malware that is clarified by on-line fraudulences to demand paying the ransom by a sufferer.

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Most of the situations, Win32/Kryptik.GKDT infection will instruct its targets to initiate funds transfer for the purpose of counteracting the amendments that the Trojan infection has presented to the sufferer’s tool.

Win32/Kryptik.GKDT Summary

These adjustments 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.
  • Attempts to connect to a dead IP:Port (1 unique times);
  • 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.
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic;
  • Performs some HTTP requests;
  • Unconventionial language used in binary resources: Sorbian;
  • Uses Windows utilities for basic functionality;
  • A process attempted to delay the analysis task by a long amount of time.;
  • 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!
  • 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;
  • Ciphering the records located on the victim’s hard disk — so the target can no more make use of the data;
  • Preventing regular 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.
Similar behavior
Related domains
big.surfeth.com Ransom.Genasom!8.293 (C64:YzY0OoumxbgzQgw3)
redirector.gvt1.com Ransom.Genasom!8.293 (C64:YzY0OoumxbgzQgw3)
r3—sn-4g5ednsd.gvt1.com Ransom.Genasom!8.293 (C64:YzY0OoumxbgzQgw3)

Win32/Kryptik.GKDT

One of the most common networks where Win32/Kryptik.GKDT Ransomware Trojans are infused are:

  • By methods of phishing emails;
  • As an effect of customer ending up on a source that holds a destructive software program;

As soon as the Trojan is efficiently injected, it will either cipher the data on the sufferer’s PC or protect against the device from operating in an appropriate way – while likewise putting a ransom note that states the need for the victims to effect the settlement for the purpose of decrypting the papers or restoring the documents system back to the first problem. In the majority of instances, the ransom note will show up when the customer restarts the COMPUTER after the system has currently been damaged.

Win32/Kryptik.GKDT distribution networks.

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

Ransomware injection

As an example:

    Faulty notifies about unlicensed software program.

    In certain areas, the Trojans frequently wrongfully report having actually detected some unlicensed applications made it possible for on the sufferer’s tool. The alert then requires the user to pay the ransom money.

    Faulty declarations regarding unlawful web content.

    In nations where software piracy is much less prominent, this technique is not as efficient for the cyber frauds. Conversely, the Win32/Kryptik.GKDT popup alert may wrongly declare to be stemming from a police establishment and will report having located child pornography or various other prohibited information on the tool.

    Win32/Kryptik.GKDT popup alert might incorrectly assert to be obtaining from a law enforcement organization and will certainly report having located child pornography or various other illegal information on the tool. The alert will in a similar way include a need for the customer to pay the ransom money.

Technical details

File Info:

crc32: 018B7DFE
md5: cb7333a2785617e178c11c802ad9c561
name: CB7333A2785617E178C11C802AD9C561.mlw
sha1: 39567f4441268da9b17975d1f1dd2a1dac848260
sha256: 4fe8b0060f7aec8a2e2461cd4aa47192a9a4c01be9a5e67db6107a48f0eb3e28
sha512: b144d6eaafdada3ea787bffa6d069e4d746d6e9b8ce63deaf30998dd5302a5ee535ca778f8b0e5bb5c277da0a8c91c874f29c7c5ab46c66ab72acfca89371244
ssdeep: 3072:7QzJUam3dsqtopnoS+nlibig4yFDFTADIayHl4BAx:7QzJZm5qpvSPcD2FyF4O
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

InternalName: tgabhryj.exe
ProductVersion: 1.0.0.11

Win32/Kryptik.GKDT also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.GenericKDZ.46912
FireEye Generic.mg.cb7333a2785617e1
McAfee Trojan-FQPW!CB7333A27856
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 0053d5971 )
BitDefender Trojan.GenericKDZ.46912
K7GW Trojan ( 0053d5971 )
CrowdStrike win/malicious_confidence_80% (D)
Symantec Packed.Generic.525
APEX Malicious
Avast Win32:TrojanX-gen [Trj]
ClamAV Win.Malware.Generic-6666640-0
Kaspersky Trojan.Win32.Gozi.kq
Alibaba Trojan:Win32/GandCrab.4f9d6477
NANO-Antivirus Trojan.Win32.Gozi.fhqaro
AegisLab Trojan.Win32.Generic.4!c
Rising Ransom.Genasom!8.293 (C64:YzY0OoumxbgzQgw3)
Ad-Aware Trojan.GenericKDZ.46912
Emsisoft Trojan.Agent (A)
Comodo TrojWare.Win32.Ransom.GandCrab.GD@800qia
DrWeb Trojan.Encoder.24384
Zillya Trojan.GenericKD.Win32.176719
TrendMicro Ransom.Win32.GANDCRAB.SMJC.hp
McAfee-GW-Edition BehavesLike.Win32.Generic.ch
Sophos Mal/Generic-S + Mal/GandCrab-B
SentinelOne Static AI – Suspicious PE
GData Win32.Trojan-Ransom.GandCrab.G
Jiangmin Trojan.GandCrypt.kg
eGambit Unsafe.AI_Score_99%
Avira TR/Crypt.Agent.lvnfb
Antiy-AVL Trojan/Win32.Fuerboos
Arcabit Trojan.Generic.DB740
SUPERAntiSpyware Ransom.GandCrab/Variant
ZoneAlarm Trojan.Win32.Gozi.kq
Microsoft Ransom:Win32/GandCrab.AV
Cynet Malicious (score: 100)
Acronis suspicious
BitDefenderTheta Gen:NN.ZexaF.34590.ky0@aWuOi!fG
ALYac Trojan.GenericKDZ.46912
MAX malware (ai score=100)
VBA32 BScope.Trojan.CryptInject
Malwarebytes Trojan.MalPack
Panda Generic Malware
ESET-NOD32 a variant of Win32/Kryptik.GKDT
TrendMicro-HouseCall Ransom.Win32.GANDCRAB.SMJC.hp
Tencent Win32.Trojan.Gozi.Taet
Yandex Trojan.GenAsa!LXKfu+BwDPY
Ikarus Trojan.Win32.Danabot
Fortinet W32/Kryptik.CNB!tr
AVG Win32:TrojanX-gen [Trj]
Cybereason malicious.278561
Paloalto generic.ml
Qihoo-360 Win32/Ransom.GandCrab.HgIASOUA

How to remove Win32/Kryptik.GKDT virus?

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.GKDT 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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

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