Win32/Kryptik.GJJB

What is Win32/Kryptik.GJJB infection?

In this article you will discover about the interpretation of Win32/Kryptik.GJJB and also its adverse influence on your computer. Such ransomware are a type of malware that is elaborated by on the internet scams to demand paying the ransom by a target.

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Most of the situations, Win32/Kryptik.GJJB virus will advise its sufferers to start funds transfer for the purpose of neutralizing the modifications that the Trojan infection has actually introduced to the victim’s gadget.

Win32/Kryptik.GJJB Summary

These adjustments 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.
  • A process created a hidden window;
  • 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.
  • Uses Windows utilities for basic functionality;
  • 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
  • Attempts to identify installed AV products by registry key;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers situated on the victim’s hard disk — so the target can no longer use the information;
  • Preventing normal accessibility 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.GJJB

The most common networks through which Win32/Kryptik.GJJB Ransomware Trojans are injected are:

  • By methods of phishing emails;
  • As a repercussion of customer winding up on a source that organizes a malicious software application;

As soon as the Trojan is effectively injected, it will either cipher the information on the sufferer’s computer or prevent the device from working in a proper manner – while additionally positioning a ransom money note that states the requirement for the victims to effect the settlement for the purpose of decrypting the documents or bring back the file system back to the preliminary problem. In a lot of circumstances, the ransom note will certainly show up when the customer reboots the PC after the system has already been damaged.

Win32/Kryptik.GJJB distribution channels.

In various corners of the world, Win32/Kryptik.GJJB expands by jumps and bounds. Nevertheless, the ransom notes and techniques of obtaining the ransom money quantity may vary depending upon specific regional (local) settings. The ransom notes and techniques of extorting the ransom money quantity may vary depending on specific regional (local) setups.

Ransomware injection

For instance:

    Faulty alerts regarding unlicensed software application.

    In specific locations, the Trojans frequently wrongfully report having actually identified some unlicensed applications enabled on the sufferer’s gadget. The sharp after that requires the individual to pay the ransom.

    Faulty statements regarding prohibited web content.

    In nations where software program piracy is less prominent, this technique is not as reliable for the cyber scams. Conversely, the Win32/Kryptik.GJJB popup alert might incorrectly claim to be originating from a law enforcement organization and will certainly report having located kid pornography or other illegal data on the gadget.

    Win32/Kryptik.GJJB popup alert may incorrectly claim to be deriving from a regulation enforcement organization as well as will report having located youngster porn or various other illegal information on the tool. The alert will likewise consist of a demand for the user to pay the ransom.

Technical details

File Info:

crc32: 40468AA9
md5: 18454e92fef3416372af50680d88b27a
name: 18454E92FEF3416372AF50680D88B27A.mlw
sha1: a782732c95c88ce47af748fe3e6f3a9375354590
sha256: 801722924358fabadaac45631901eea76208712a63658776e6fbe150f4fc826f
sha512: bb101e936088d7e3201bdc3c98fb7a97f0868089f94cdc8b6d7810f9b3e96d7410d85310c9c3dcf4be83e6bcb34b3317a3d876b6abf4786627716315fa336c06
ssdeep: 1536:4+Q06I832U3o7kE2K8etYs/AdrI/Jqxcbz:4+Q09Qat/8enodWqG3
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.GJJB also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 00532e3d1 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.24384
ALYac Trojan.GenericKDZ.46091
Zillya Trojan.GenericKD.Win32.134445
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_70% (D)
BitDefender Trojan.GenericKDZ.46091
K7GW Trojan ( 655333331 )
Cybereason malicious.2fef34
Cyren W32/Ransom.QWQK-2643
ESET-NOD32 a variant of Win32/Kryptik.GJJB
APEX Malicious
Paloalto generic.ml
Cynet Malicious (score: 100)
Kaspersky HEUR:Trojan.Win32.Generic
Alibaba Trojan:Win32/Bunitu.ali1000105
NANO-Antivirus Trojan.Win32.GenKryptik.fgaarj
MicroWorld-eScan Trojan.GenericKDZ.46091
Tencent Win32.Trojan.Generic.Dxmz
Ad-Aware Trojan.GenericKDZ.46091
Sophos Mal/Generic-S + Mal/GandCrab-G
Comodo TrojWare.Win32.Ransom.Blocker.GD@7s45pk
BitDefenderTheta Gen:NN.ZexaF.34628.euW@aCkcEnkO
McAfee-GW-Edition Packed-FJR!18454E92FEF3
FireEye Generic.mg.18454e92fef34163
Emsisoft Trojan.GenericKDZ.46091 (B)
Jiangmin Trojan.Blocker.ivi
Avira HEUR/AGEN.1138680
eGambit Unsafe.AI_Score_99%
Microsoft Trojan:Win32/Gandcrab.CS!eml
GData Trojan.GenericKDZ.46091
AhnLab-V3 Trojan/Win32.Kryptik.C2644722
Acronis suspicious
McAfee Packed-FJR!18454E92FEF3
MAX malware (ai score=88)
VBA32 BScope.Trojan.Fuerboos
TrendMicro-HouseCall Ransom_GANDCRAB.SMD3
Rising Trojan.GenKryptik!8.AA55 (CLOUD)
SentinelOne Static AI – Suspicious PE
Fortinet W32/Agent.BFJ!tr
Panda Trj/GdSda.A
Qihoo-360 Win32/Trojan.04f

How to remove Win32/Kryptik.GJJB 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.

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Press “Install” button.

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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.GJJB 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.GJJB 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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