Win32/Kryptik.GHCB

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is Win32/Kryptik.GHCB infection?

In this short article you will find concerning the meaning of Win32/Kryptik.GHCB and also its adverse influence on your computer system. Such ransomware are a form of malware that is elaborated by on the internet frauds to require paying the ransom by a target.

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In the majority of the cases, Win32/Kryptik.GHCB ransomware will advise its victims to start funds transfer for the purpose of neutralizing the modifications that the Trojan infection has actually presented to the sufferer’s gadget.

Win32/Kryptik.GHCB Summary

These adjustments can be as complies with:

  • 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 attempted to delay the analysis task.;
  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • 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
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Creates a slightly modified copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers situated on the sufferer’s hard disk — so the victim can no longer make use of the data;
  • Preventing routine access to the sufferer’s workstation;

Win32/Kryptik.GHCB

The most typical networks whereby Win32/Kryptik.GHCB Trojans are infused are:

  • By ways of phishing emails;
  • As a repercussion of user winding up on a source that organizes a harmful software application;

As soon as the Trojan is effectively injected, it will either cipher the data on the sufferer’s computer or stop the device from working in a correct way – while likewise positioning a ransom note that mentions the demand for the victims to effect the repayment for the objective of decrypting the documents or bring back the file system back to the first problem. In most instances, the ransom money note will certainly come up when the client restarts the PC after the system has currently been damaged.

Win32/Kryptik.GHCB distribution networks.

In different edges of the globe, Win32/Kryptik.GHCB expands by jumps and bounds. Nonetheless, the ransom notes and also tricks of extorting the ransom money quantity might differ depending on certain regional (local) settings. The ransom notes and also tricks of extorting the ransom amount might vary depending on particular neighborhood (regional) settings.

Ransomware injection

As an example:

    Faulty informs about unlicensed software application.

    In particular locations, the Trojans often wrongfully report having actually identified some unlicensed applications enabled on the sufferer’s device. The sharp after that requires the customer to pay the ransom money.

    Faulty statements regarding prohibited web content.

    In nations where software application piracy is much less prominent, this method is not as efficient for the cyber fraudulences. Additionally, the Win32/Kryptik.GHCB popup alert may falsely declare to be originating from a police institution as well as will report having situated child porn or various other illegal data on the gadget.

    Win32/Kryptik.GHCB popup alert might incorrectly assert to be deriving from a law enforcement organization and also will certainly report having located child pornography or various other prohibited information on the gadget. The alert will similarly contain a demand for the individual to pay the ransom money.

Technical details

File Info:

crc32: 4B863DAF
md5: 0f9c503c8eb5e706b0b59da747fbb851
name: 0F9C503C8EB5E706B0B59DA747FBB851.mlw
sha1: 919a299c8e210f02c1b38030b4bbd646827cc5f7
sha256: 8f3c574821527c1100a0ab0f3347550698aff941391ccee8862c75b64a0e62e3
sha512: f079b247db05a753dcb3d2a3b25ff6702322a50bb3795691449a16693c269c2741c6e7f493a3679e36712e64d8f5303991a181d7cb7723ea4bcdc3daac2f0798
ssdeep: 6144:hrTTOcYCs3XA9RBYC0Ze4mvcZGFg+zRw3Am0Pk3dgvXfV:9+rCs3XA9bcj2+3pok3dgvt
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.GHCB also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusTrojan ( 003e58dd1 )
Elasticmalicious (high confidence)
DrWebTrojan.PWS.Siggen2.3661
CynetMalicious (score: 100)
CAT-QuickHealTrojan.Mauvaise.SL1
ALYacTrojan.Ransom.GandCrab.Gen.2
ZillyaTrojan.GandCrypt.Win32.257
SangforWin.Packed.Gandcrab-6552923-4
CrowdStrikewin/malicious_confidence_100% (D)
K7GWTrojan ( 00532a3d1 )
Cybereasonmalicious.c8eb5e
CyrenW32/S-15f730e0!Eldorado
SymantecPacked.Generic.525
ESET-NOD32a variant of Win32/Kryptik.GHCB
APEXMalicious
AvastWin32:Malware-gen
ClamAVWin.Packed.Gandcrab-6552923-4
KasperskyHEUR:Trojan.Win32.Generic
BitDefenderTrojan.Ransom.GandCrab.Gen.2
NANO-AntivirusTrojan.Win32.Kryptik.fcoyrt
ViRobotTrojan.Win32.GandCrab.Gen.A
SUPERAntiSpywareTrojan.Agent/Gen-Kryptik
MicroWorld-eScanTrojan.Ransom.GandCrab.Gen.2
TencentMalware.Win32.Gencirc.10c9b3f1
Ad-AwareTrojan.Ransom.GandCrab.Gen.2
SophosMal/Generic-R + Mal/Agent-AUL
ComodoTrojWare.Win32.Chapak.GFD@7o3yhi
BitDefenderThetaGen:NN.ZexaF.34678.uuX@a8JPErk
VIPRETrojan.Win32.Generic!BT
TrendMicroRansom_GANDCRAB.SMJS2
McAfee-GW-EditionBehavesLike.Win32.Generic.fh
FireEyeGeneric.mg.0f9c503c8eb5e706
EmsisoftTrojan.Ransom.GandCrab.Gen.2 (B)
SentinelOneStatic AI – Malicious PE
JiangminTrojan.PSW.Coins.fp
AviraHEUR/AGEN.1126869
MicrosoftTrojan:Win32/GandCrypt.PVR!MTB
ArcabitTrojan.Ransom.GandCrab.Gen.2
ZoneAlarmHEUR:Trojan-Ransom.Win32.GandCrypt.gen
GDataTrojan.Ransom.GandCrab.Gen.2
TACHYONRansom/W32.GandCrab
AhnLab-V3Win-Trojan/Gandcrab.Exp
Acronissuspicious
McAfeeGenericRXFP-FJ!0F9C503C8EB5
MAXmalware (ai score=95)
VBA32BScope.Trojan.Fuerboos
MalwarebytesTrojan.MalPack
PandaTrj/Genetic.gen
TrendMicro-HouseCallRansom_GANDCRAB.SMJS2
RisingTrojan.Kryptik!1.B2A4 (CLOUD)
YandexTrojan.GenAsa!IpN2nN1hbeE
IkarusTrojan-Ransom.GandCrab
FortinetW32/GenKryptik.CNAR!tr
AVGWin32:Malware-gen
Paloaltogeneric.ml
Qihoo-360Win32/Ransom.GandCrab.HwoCEpsA

How to remove Win32/Kryptik.GHCB 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.GHCB 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.GHCB 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/comparison

About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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