Win32/Kryptik.FUZU

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

What is Win32/Kryptik.FUZU infection?

In this short article you will certainly find about the meaning of Win32/Kryptik.FUZU as well as its negative effect on your computer. Such ransomware are a type of malware that is elaborated by on-line scams to demand paying the ransom by a sufferer.

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Most of the cases, Win32/Kryptik.FUZU infection will certainly instruct its targets to start funds move for the purpose of reducing the effects of the changes that the Trojan infection has actually introduced to the victim’s tool.

Win32/Kryptik.FUZU Summary

These alterations 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.
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • 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.
  • Attempts to delete volume shadow copies;
  • 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
  • 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.
  • Creates a copy of itself;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the files found on the target’s hard disk drive — so the victim can no longer make use of the information;
  • Preventing regular accessibility to the victim’s workstation;

Win32/Kryptik.FUZU

One of the most typical channels where Win32/Kryptik.FUZU Trojans are injected are:

  • By ways of phishing e-mails;
  • As a repercussion of customer winding up on a resource that organizes a harmful software;

As soon as the Trojan is successfully infused, it will either cipher the information on the sufferer’s PC or avoid the tool from operating in an appropriate manner – while also placing a ransom money note that mentions the demand for the victims to effect the settlement for the purpose of decrypting the records or restoring the documents system back to the preliminary problem. In many circumstances, the ransom note will certainly show up when the customer reboots the PC after the system has actually currently been damaged.

Win32/Kryptik.FUZU distribution networks.

In various edges of the globe, Win32/Kryptik.FUZU grows by jumps as well as bounds. Nevertheless, the ransom notes as well as techniques of obtaining the ransom money quantity may differ relying on specific neighborhood (local) settings. The ransom money notes and also methods of obtaining the ransom amount may vary depending on certain neighborhood (regional) setups.

Ransomware injection

For instance:

    Faulty informs about unlicensed software program.

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

    Faulty statements about illegal content.

    In nations where software program piracy is much less preferred, this approach is not as effective for the cyber scams. Alternatively, the Win32/Kryptik.FUZU popup alert might wrongly declare to be deriving from a law enforcement establishment and will certainly report having located child porn or various other prohibited information on the gadget.

    Win32/Kryptik.FUZU popup alert might incorrectly claim to be obtaining from a law enforcement institution and will certainly report having situated child porn or other illegal information on the gadget. The alert will likewise include a requirement for the user to pay the ransom money.

Technical details

File Info:

crc32: DA723B9F
md5: b908406ac6e8c0f3452c5358e23d8f79
name: B908406AC6E8C0F3452C5358E23D8F79.mlw
sha1: 5a2bd675c0c85f671ebc6135d1f0f7220d5c2db5
sha256: 2852bc7701f4e3a10fbad086f38fb9c14736853ce70016f1b8dbfaf043641789
sha512: 6900f342325c0d466b861497835e0dda2f78b4a1d1c6c2f0437355a0e560fdcf11658773adb780692012c1899ac3286383b9cd9196b719e72ec236905dddf5e6
ssdeep: 6144:xNfG0jZKoqsOx5pIMm06NXvNQ6lU3J8IA6mYfiTUJFGl:xNff1KoqsOx5pIC61lG38YKeGl
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright xa9DEKSI 2000 - 2014 KG and its Licensors
FileVersion: 4.3.3.4
CompanyName: DEKSI
LegalTrademarks: Copyright xa9DEKSI 2000 - 2014 KG and its Licensors
ProductName: Thief
ProductVersion: 4.3.3.4
FileDescription: Democratic Marketers Contends Xd
OriginalFilename: Thief
Translation: 0x0409 0x04b0

Win32/Kryptik.FUZU also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware2
Elasticmalicious (high confidence)
DrWebTrojan.Encoder.3953
CynetMalicious (score: 100)
ALYacGen:Variant.Ransom.Cryptomix.1
CylanceUnsafe
ZillyaTrojan.Crusis.Win32.654
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (W)
AlibabaRansom:Win32/Crusis.1dcda7e8
K7GWTrojan ( 0051c7291 )
K7AntiVirusTrojan ( 0051c7291 )
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of Win32/Kryptik.FUZU
APEXMalicious
AvastWin32:Malware-gen
KasperskyTrojan-Ransom.Win32.Crusis.bqn
BitDefenderGen:Variant.Ransom.Cryptomix.1
NANO-AntivirusTrojan.Win32.Crusis.evsyxy
MicroWorld-eScanGen:Variant.Ransom.Cryptomix.1
TencentWin32.Trojan.Crusis.Pdvs
Ad-AwareGen:Variant.Ransom.Cryptomix.1
ComodoMalware@#18ewj1usxaytc
BitDefenderThetaGen:NN.ZexaF.34608.wu0@auugTIgi
VIPRETrojan.Win32.Generic!BT
McAfee-GW-EditionBehavesLike.Win32.Worm.fc
FireEyeGeneric.mg.b908406ac6e8c0f3
EmsisoftGen:Variant.Ransom.Cryptomix.1 (B)
SentinelOneStatic AI – Malicious PE
AviraTR/Crypt.XPACK.Gen2
eGambitUnsafe.AI_Score_99%
MicrosoftRansom:Win32/Genasom
GDataGen:Variant.Ransom.Cryptomix.1
AhnLab-V3Trojan/Win32.Crusis.C2380462
Acronissuspicious
McAfeeArtemis!B908406AC6E8
MAXmalware (ai score=99)
VBA32Trojan-Ransom.Crusis
MalwarebytesMachineLearning/Anomalous.93%
PandaTrj/CI.A
RisingRansom.Crusis!8.5724 (CLOUD)
YandexTrojan.Crusis!vNwjXvnbx2s
IkarusTrojan.Win32.Crypt
FortinetW32/Kryptik.FUZU!tr
AVGWin32:Malware-gen
Paloaltogeneric.ml
Qihoo-360Win32/Ransom.CrySiS.HwoCmScA

How to remove Win32/Kryptik.FUZU 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.FUZU 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.FUZU 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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