Win32/Kryptik.GFCZ

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

What is Win32/Kryptik.GFCZ infection?

In this short article you will certainly find about the definition of Win32/Kryptik.GFCZ and its negative influence on your computer. Such ransomware are a type of malware that is specified by on-line frauds to demand paying the ransom money by a victim.

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Most of the instances, Win32/Kryptik.GFCZ infection will instruct its victims to initiate funds move for the function of reducing the effects of the amendments that the Trojan infection has presented to the target’s gadget.

Win32/Kryptik.GFCZ Summary

These alterations 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.
  • 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 remove evidence of file being downloaded from the Internet;
  • 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.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files located on the target’s hard drive — so the target can no more make use of the information;
  • Preventing routine 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.

Win32/Kryptik.GFCZ

The most normal networks whereby Win32/Kryptik.GFCZ Trojans are injected are:

  • By means of phishing emails;
  • As a repercussion of user ending up on a resource that holds a malicious software application;

As quickly as the Trojan is successfully injected, it will certainly either cipher the information on the target’s PC or protect against the device from working in a correct manner – while additionally putting a ransom money note that states the demand for the targets to impact the settlement for the objective of decrypting the papers or recovering the data system back to the initial problem. In a lot of circumstances, the ransom note will certainly show up when the client restarts the PC after the system has currently been harmed.

Win32/Kryptik.GFCZ distribution channels.

In various corners of the globe, Win32/Kryptik.GFCZ expands by leaps and also bounds. Nonetheless, the ransom notes and also tricks of obtaining the ransom amount may vary depending upon particular local (local) settings. The ransom notes as well as techniques of obtaining the ransom quantity might differ depending on certain regional (local) setups.

Ransomware injection

As an example:

    Faulty informs concerning unlicensed software.

    In particular locations, the Trojans commonly wrongfully report having found some unlicensed applications allowed on the victim’s gadget. The alert after that demands the user to pay the ransom.

    Faulty statements regarding prohibited material.

    In nations where software application piracy is much less popular, this technique is not as effective for the cyber fraudulences. Conversely, the Win32/Kryptik.GFCZ popup alert may wrongly assert to be deriving from a law enforcement establishment as well as will report having situated youngster porn or other illegal data on the device.

    Win32/Kryptik.GFCZ popup alert may incorrectly claim to be acquiring from a legislation enforcement institution as well as will report having located kid pornography or other illegal information on the gadget. The alert will likewise include a need for the user to pay the ransom.

Technical details

File Info:

crc32: FC948BC8
md5: 477848a223c374c5bf37bcb679854046
name: 477848A223C374C5BF37BCB679854046.mlw
sha1: 5f4273cd5e9a98e7be881c82cecb8fd1b7271e2a
sha256: 0c06b135f30aca9d9b8968b8f586bdff603eedd41a8559b19e3cb9a6b0c3d41e
sha512: 5cfae6e96a3699c34381e23213f55c25731f2c3987f7688e641dd315da3f2e6d19abd3ddd19e77fee41675785f374689d33dba84a377838dd5a389d10162e927
ssdeep: 1536:7LHlzrD2FUFQZ2oj6n5wmAIF/dqPXi/OEbz+TQFRBZZl/uLZI872cTcBrqq5AUi:dzGFeojz+/OISu/bxsInrq/otZZkZG
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.GFCZ also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
MicroWorld-eScanTrojan.Mailer.GenericKDS.30532365
FireEyeGeneric.mg.477848a223c374c5
CAT-QuickHealTrojan.Chapak.ZZ5
McAfeePacked-FCX!477848A223C3
CylanceUnsafe
ZillyaBackdoor.Mokes.Win32.1146
AegisLabTrojan.Win32.Generic.4!c
SangforTrojan.Win32.Save.a
K7AntiVirusTrojan ( 0052cb411 )
BitDefenderTrojan.Mailer.GenericKDS.30532365
K7GWTrojan ( 0052cb411 )
Cybereasonmalicious.223c37
CyrenW32/Trojan.XQIJ-2986
SymantecPacked.Generic.525
APEXMalicious
AvastWin32:Malware-gen
ClamAVWin.Trojan.Emotet-6529797-0
KasperskyHEUR:Trojan.Win32.Generic
AlibabaTrojan:Win32/Starter.ali2000005
NANO-AntivirusTrojan.Win32.Chapak.ezlsvb
ViRobotTrojan.Win32.Agent.263176
RisingTrojan.Crypto!8.364 (CLOUD)
Ad-AwareTrojan.Mailer.GenericKDS.30532365
TACHYONRansom/W32.GandCrab.189440
EmsisoftTrojan.Mailer.GenericKDS.30532365 (B)
ComodoTrojWare.Win32.Chapak.BN@7lfesu
F-SecureHeuristic.HEUR/AGEN.1126869
DrWebTrojan.Encoder.24384
VIPREBehavesLike.Win32.Malware.bsm (vs)
TrendMicroRansom_GANDCRAB.SMALY-3
McAfee-GW-EditionBehavesLike.Win32.Trojan.ch
SophosMal/Generic-R + Mal/GandCrab-D
SentinelOneStatic AI – Suspicious PE
WebrootW32.Trojan.Gen
AviraHEUR/AGEN.1126869
Antiy-AVLTrojan/Win32.Chapak
MicrosoftTrojan:Win32/Gandcrab.SGC!MTB
ArcabitTrojan.Mailer.GenericS.D1D1E30D
SUPERAntiSpywareTrojan.Agent/Gen-Kryptik
AhnLab-V3Win-Trojan/Gandcrab02.Exp
ZoneAlarmHEUR:Trojan.Win32.Generic
GDataTrojan.Mailer.GenericKDS.30532365
CynetMalicious (score: 100)
ESET-NOD32a variant of Win32/Kryptik.GFCZ
Acronissuspicious
BitDefenderThetaGen:NN.ZexaF.34608.luW@auBobkf
ALYacTrojan.Ransom.GandCrab
MAXmalware (ai score=95)
VBA32Trojan.Encoder
MalwarebytesTrojan.MalPack
PandaTrj/Genetic.gen
TrendMicro-HouseCallRansom_GANDCRAB.SMALY-3
TencentMalware.Win32.Gencirc.10b63538
YandexTrojan.GenAsa!pYj8JQukREA
IkarusTrojan-Ransom.GandCrab
MaxSecureRansomeware.CRAB.gen
FortinetW32/GenKryptik.DQHN!tr
AVGWin32:Malware-gen
Paloaltogeneric.ml
CrowdStrikewin/malicious_confidence_100% (D)
Qihoo-360Win32/Trojan.Generic.HwoCu3sA

How to remove Win32/Kryptik.GFCZ virus?

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.GFCZ 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.GFCZ 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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