Win32/Kryptik.GKJA

What is Win32/Kryptik.GKJA infection?

In this short article you will certainly locate concerning the interpretation of Win32/Kryptik.GKJA as well as its negative effect on your computer. Such ransomware are a form of malware that is clarified by on the internet scams to demand paying the ransom money by a target.

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Most of the instances, Win32/Kryptik.GKJA infection will advise its targets to launch funds transfer for the purpose of neutralizing the modifications that the Trojan infection has actually introduced to the victim’s tool.

Win32/Kryptik.GKJA 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.
  • Presents an Authenticode digital signature;
  • 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.
  • 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;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers found on the target’s hard drive — so the victim can no more utilize the data;
  • Preventing regular accessibility to the target’s workstation;

Win32/Kryptik.GKJA

The most normal channels through which Win32/Kryptik.GKJA Ransomware are injected are:

  • By ways of phishing e-mails;
  • As an effect of user ending up on a resource that hosts a destructive software application;

As soon as the Trojan is efficiently infused, it will certainly either cipher the information on the sufferer’s computer or stop the gadget from working in a correct manner – while also positioning a ransom note that discusses the demand for the victims to effect the settlement for the function of decrypting the documents or recovering the documents system back to the first condition. In a lot of circumstances, the ransom note will certainly show up when the client reboots the COMPUTER after the system has already been harmed.

Win32/Kryptik.GKJA circulation networks.

In numerous edges of the world, Win32/Kryptik.GKJA expands by jumps and also bounds. Nonetheless, the ransom money notes and methods of extorting the ransom amount may vary relying on specific regional (local) setups. The ransom notes as well as techniques of extorting the ransom money quantity might vary depending on certain local (local) setups.

Ransomware injection

For example:

    Faulty informs about unlicensed software.

    In certain locations, the Trojans typically wrongfully report having actually discovered some unlicensed applications enabled on the target’s device. The sharp then demands the user to pay the ransom.

    Faulty declarations about unlawful web content.

    In nations where software application piracy is much less prominent, this method is not as reliable for the cyber scams. Additionally, the Win32/Kryptik.GKJA popup alert may incorrectly assert to be deriving from a police establishment and will report having situated youngster porn or various other unlawful data on the gadget.

    Win32/Kryptik.GKJA popup alert might wrongly claim to be deriving from a law enforcement establishment and also will certainly report having located youngster pornography or various other prohibited information on the device. The alert will similarly consist of a need for the user to pay the ransom.

Technical details

File Info:

crc32: 6DDF7AED
md5: 74bdfa57145309e66d35f245ff0fd667
name: 74BDFA57145309E66D35F245FF0FD667.mlw
sha1: 06782cad9411f7cd4eabb4c83454bc1ae36e8c98
sha256: 7e57ce529cd9a4ca4438c31500296f59aae2bfd64f1934bd47282f6a13232d8f
sha512: 9be26f2de2799c4fd26f4353d6f34510bcd4d6c87a00f8adaee4decfa7ad85cfa43d6f3b86237cdbb7b653abe6132339876f562812a217996d437656dc30c560
ssdeep: 3072:ABMAYCKYPEMGnh7QnSwMJRHy+sBl5WRmWfiNGI0PMp:ABMAYrq1GMnSdRH7wMRMN0I
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: xa9 Microsoft Corporation. All rights reserved.
InternalName: cacls
FileVersion: 10.0.16299.15 (WinBuild.160101.0800)
CompanyName: Microsoft Corporation
ProductName: Microsoftxae Windowsxae Operating System
ProductVersion: 10.0.16299.15
FileDescription: Control ACLs Program
OriginalFilename: CACLS.EXE
Translation: 0x0409 0x04b0

Win32/Kryptik.GKJA also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0053be6f1 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.25976
Cynet Malicious (score: 100)
ALYac Trojan.Mint.Zamg.Q
Cylance Unsafe
Zillya Trojan.GenericKD.Win32.198730
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_90% (D)
Alibaba Ransom:Win32/GandCrypt.b4b2dffa
K7GW Trojan ( 0053be6f1 )
Cybereason malicious.714530
Symantec Packed.Generic.493
ESET-NOD32 a variant of Win32/Kryptik.GKJA
APEX Malicious
Avast Win32:DangerousSig [Trj]
Kaspersky Trojan-Ransom.Win32.GandCrypt.ejw
BitDefender Trojan.Mint.Zamg.Q
NANO-Antivirus Trojan.Win32.GandCrypt.fiujok
MicroWorld-eScan Trojan.Mint.Zamg.Q
Tencent Win32.Trojan.Gandcrypt.Aiin
Ad-Aware Trojan.Mint.Zamg.Q
Sophos Mal/Generic-S + Mal/Elenoocka-G
Comodo TrojWare.Win32.Crypt.C@7vajd0
BitDefenderTheta Gen:NN.Zextet.34628.ju1@amrGixci
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition Artemis!Trojan
FireEye Generic.mg.74bdfa57145309e6
Emsisoft MalCert.B (A)
Avira HEUR/AGEN.1111253
Microsoft PUA:Win32/LoadMoney
ZoneAlarm Trojan-Ransom.Win32.GandCrypt.ejw
GData Trojan.Mint.Zamg.Q
AhnLab-V3 Win-Trojan/Suspig8.Exp
Acronis suspicious
McAfee GenericRXAA-AA!74BDFA571453
MAX malware (ai score=99)
VBA32 BScope.TrojanRansom.GandCrypt
Malwarebytes Trojan.FakeMS
Panda Trj/CI.A
Rising Ransom.GandCrypt!8.F33E (CLOUD)
Ikarus Trojan.Win32.Crypt
Fortinet W32/Kryptik.GKMB!tr
AVG Win32:DangerousSig [Trj]
Paloalto generic.ml
Qihoo-360 Win32/Ransom.GandCrab.HxMBEpsA

How to remove Win32/Kryptik.GKJA ransomware?

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.GKJA 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.GKJA 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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