Win32/Kryptik.FSZU

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

What is Win32/Kryptik.FSZU infection?

In this post you will locate about the definition of Win32/Kryptik.FSZU as well as its negative impact 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 instances, Win32/Kryptik.FSZU virus will instruct its sufferers to initiate funds transfer for the purpose of counteracting the amendments that the Trojan infection has presented to the victim’s gadget.

Win32/Kryptik.FSZU Summary

These alterations can be as adheres to:

  • 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.
  • Injection with CreateRemoteThread in a remote process;
  • 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.
  • 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.

  • A process created a hidden window;
  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • 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;
  • Queries information on disks for anti-virtualization via Device Information APIs;
  • Deletes its original binary from disk;
  • Sniffs keystrokes;
  • 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 copy of itself;
  • 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 documents found on the victim’s hard disk — so the victim can no more utilize the information;
  • Preventing normal accessibility to the victim’s workstation;

Win32/Kryptik.FSZU

The most normal networks through which Win32/Kryptik.FSZU Ransomware Trojans are infused are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As an effect of customer ending up on a source that holds a malicious software application;

As soon as the Trojan is successfully infused, it will certainly either cipher the information on the target’s computer or protect against the gadget from working in an appropriate fashion – while likewise putting a ransom note that discusses the need for the targets to impact the repayment for the purpose of decrypting the documents or recovering the documents system back to the initial condition. In most circumstances, the ransom money note will show up when the customer reboots the PC after the system has already been damaged.

Win32/Kryptik.FSZU distribution networks.

In different corners of the globe, Win32/Kryptik.FSZU grows by jumps as well as bounds. Nonetheless, the ransom notes and also tricks of extorting the ransom quantity might differ depending upon particular neighborhood (local) setups. The ransom notes as well as methods of extorting the ransom amount might vary depending on certain regional (regional) settings.

Ransomware injection

For example:

    Faulty alerts concerning unlicensed software.

    In certain areas, the Trojans usually wrongfully report having actually discovered some unlicensed applications made it possible for on the target’s tool. The alert then requires the user to pay the ransom money.

    Faulty statements regarding illegal web content.

    In nations where software piracy is less prominent, this approach is not as effective for the cyber fraudulences. Conversely, the Win32/Kryptik.FSZU popup alert might incorrectly claim to be originating from a law enforcement institution and also will report having situated youngster porn or other illegal data on the gadget.

    Win32/Kryptik.FSZU popup alert may incorrectly declare to be deriving from a regulation enforcement establishment and will certainly report having situated child porn or various other prohibited information on the device. The alert will similarly contain a requirement for the customer to pay the ransom.

Technical details

File Info:

crc32: 5CBAE6B9
md5: b3ff39d7b85789f7afb42b2d87cb5449
name: B3FF39D7B85789F7AFB42B2D87CB5449.mlw
sha1: 4fca6e01c6b86b1aef124c9a1d7a4938202d9474
sha256: 917bc26b3c9dc1bef9749a3c0ba73ca330e85a6ea5fd161605dc98d10518c433
sha512: 0436d0a9a20c8dae39ea2aa07ba90b0b1c433d5f1743cf6e021968fb57b8994ba71dc61fa639d4e8ebcae37dc41355059ba1a982dfc63ff1ce40dbf6a3c57ca9
ssdeep: 6144:FGyqyfwvqSNRle6jUTPNBt9BOjidHmUq4q5LDDwxFwX9qCBS+Q0CQuJd:8yPYvLNR1jUjNBtCqGjp3ZwC4+Q0CQu
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.FSZU also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0050d3751 )
Elastic malicious (high confidence)
DrWeb Trojan.Gozi.20
Cynet Malicious (score: 100)
McAfee Ransomware-FMEU!B3FF39D7B857
Cylance Unsafe
Zillya Trojan.Kryptik.Win32.2603467
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Foreign.1bb82fb0
K7GW Trojan ( 0050d3751 )
Cybereason malicious.7b8578
Cyren W32/Nymaim.BZ.gen!Eldorado
Symantec Packed.Generic.493
ESET-NOD32 a variant of Win32/Kryptik.FSZU
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Ransomware.Cerber-9369448-0
Kaspersky Trojan-Ransom.Win32.Foreign.ojmw
BitDefender Gen:Heur.Ransom.Lukitos.1
NANO-Antivirus Trojan.Win32.Androm.eopvfh
MicroWorld-eScan Gen:Heur.Ransom.Lukitos.1
Tencent Malware.Win32.Gencirc.114b0689
Ad-Aware Gen:Heur.Ransom.Lukitos.1
Sophos Mal/Generic-R + Mal/Elenoocka-E
Comodo TrojWare.Win32.Crypt.C@7vajd0
BitDefenderTheta Gen:NN.ZexaF.34628.uqW@aatI9sii
VIPRE Trojan.Win32.Generic!BT
TrendMicro TSPY_URSNIF.AUSINU
McAfee-GW-Edition BehavesLike.Win32.Ransomware.fc
FireEye Generic.mg.b3ff39d7b85789f7
Emsisoft Gen:Heur.Ransom.Lukitos.1 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Backdoor.Androm.ptw
Avira HEUR/AGEN.1116787
Microsoft TrojanSpy:Win32/Ursnif.BM!MTB
GData Gen:Heur.Ransom.Lukitos.1
AhnLab-V3 Trojan/Win32.Cerber.R200545
Acronis suspicious
VBA32 Trojan.FakeAV.01657
Malwarebytes Trojan.MalPack
Panda Trj/GdSda.A
TrendMicro-HouseCall TSPY_URSNIF.AUSINU
Rising Ransom.Cerber!8.3058 (CLOUD)
Yandex Trojan.GenAsa!KwAaXa51+qg
Ikarus Trojan-Banker.UrSnif
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/GenKryptik.AFCC!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Trojan.Foreign.HxQB5H8A

How to remove Win32/Kryptik.FSZU 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.FSZU 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.FSZU 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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