Win32/Kryptik.FZYC

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

What is Win32/Kryptik.FZYC infection?

In this short article you will certainly locate regarding the meaning of Win32/Kryptik.FZYC and its unfavorable influence on your computer system. Such ransomware are a kind of malware that is elaborated by on the internet scams to demand paying the ransom by a victim.

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In the majority of the cases, Win32/Kryptik.FZYC infection will certainly advise its sufferers to initiate funds transfer for the purpose of counteracting the modifications that the Trojan infection has introduced to the target’s device.

Win32/Kryptik.FZYC Summary

These modifications 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 (inter-process);
  • Injection (Process Hollowing);
  • 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.
  • Unconventionial language used in binary resources: Gaelic (Scottish);
  • 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;
  • Executed a process and injected code into it, probably while unpacking;
  • Attempts to repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
  • 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 situated on the victim’s hard disk — so the target can no more make use of the information;
  • Preventing regular accessibility to the sufferer’s workstation;

Win32/Kryptik.FZYC

One of the most common channels where Win32/Kryptik.FZYC Trojans are injected 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 a repercussion of individual ending up on a resource that hosts a harmful software program;

As soon as the Trojan is successfully infused, it will certainly either cipher the information on the sufferer’s PC or prevent the device from operating in an appropriate manner – while likewise positioning a ransom money note that points out the need for the victims to effect the payment for the function of decrypting the papers or bring back the data system back to the first problem. In a lot of instances, the ransom money note will certainly come up when the customer reboots the COMPUTER after the system has currently been damaged.

Win32/Kryptik.FZYC distribution networks.

In various corners of the globe, Win32/Kryptik.FZYC expands by leaps and bounds. Nonetheless, the ransom money notes and tricks of obtaining the ransom money quantity might differ depending on particular regional (regional) setups. The ransom notes and methods of extorting the ransom money amount might vary depending on particular regional (regional) settings.

Ransomware injection

As an example:

    Faulty informs about unlicensed software application.

    In certain locations, the Trojans typically wrongfully report having identified some unlicensed applications enabled on the target’s tool. The sharp then requires the user to pay the ransom money.

    Faulty declarations concerning prohibited content.

    In countries where software program piracy is much less preferred, this approach is not as effective for the cyber scams. Conversely, the Win32/Kryptik.FZYC popup alert might incorrectly assert to be deriving from a law enforcement institution and also will report having located child pornography or other illegal data on the tool.

    Win32/Kryptik.FZYC popup alert might incorrectly declare to be acquiring from a legislation enforcement establishment as well as will certainly report having located youngster pornography or other illegal data on the tool. The alert will similarly include a requirement for the individual to pay the ransom.

Technical details

File Info:

crc32: 6E85F722
md5: ad91def8e05764652f7c49fc656ed563
name: AD91DEF8E05764652F7C49FC656ED563.mlw
sha1: 578b4b3957e9b0975a0c062becfb8196137dbf0e
sha256: b5a3b526564368a353d7cb4b52e729557cb809dfde26b93cafad204c65268bde
sha512: 90ead8056b7ed985eb7715e15b9b379ebeeb8752a28ec77e1046285e4f79210be5c98ffe94d20cc30be7675de4beab8a1aec16618fe482591c40a4c83f5b1a3d
ssdeep: 6144:61JcZp8UHC2+QQWu3l/pRk/RX8bJw1zfZtMtA0vh8v03rLqXBeC0tqle:A+ZmQC2YnRk/WbJ+gDvhbuWtMe
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.FZYC also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Adware ( 00539ed31 )
Elastic malicious (high confidence)
DrWeb Trojan.PWS.Panda.12795
Cynet Malicious (score: 100)
CAT-QuickHeal Trojan.Chapak.ZZ5
ALYac Trojan.BRMon.Gen.1
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Trojan:Win32/Kryptik.dff51035
K7GW Trojan ( 0051f3d01 )
Cybereason malicious.8e0576
Cyren W32/S-00766a36!Eldorado
ESET-NOD32 a variant of Win32/Kryptik.FZYC
APEX Malicious
Avast FileRepMalware
ClamAV Win.Trojan.Emotet-6411372-0
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Trojan.BRMon.Gen.1
NANO-Antivirus Trojan.Win32.Panda.evqmnb
SUPERAntiSpyware Trojan.Agent/Gen-Malagent
MicroWorld-eScan Trojan.BRMon.Gen.1
Tencent Malware.Win32.Gencirc.11494bdd
Ad-Aware Trojan.BRMon.Gen.1
Sophos Mal/Generic-R + Mal/Ransom-FN
Comodo TrojWare.Win32.Crypt.AV@7f2dcy
BitDefenderTheta Gen:NN.ZexaF.34628.xuW@aCA1U5pO
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_HPGANDCRAB.SMG2
McAfee-GW-Edition BehavesLike.Win32.Generic.fc
FireEye Generic.mg.ad91def8e0576465
Emsisoft Trojan.BRMon.Gen.1 (B)
Jiangmin Trojan-Ransom.Crypmod.a
Avira HEUR/AGEN.1106533
Microsoft TrojanSpy:Win32/Ursnif
AegisLab Trojan.Win32.Generic.4!c
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Trojan.BRMon.Gen.1
AhnLab-V3 Win-Trojan/MalPe34.Suspicious.X2029
Acronis suspicious
McAfee Trojan-FOSO!AD91DEF8E057
MAX malware (ai score=95)
VBA32 BScope.Trojan.Scarsi
Malwarebytes Ransom.GlobeImposter
Panda Trj/Genetic.gen
TrendMicro-HouseCall Ransom_HPGANDCRAB.SMG2
Rising Malware.Obscure/Heur!1.9E03 (CLASSIC)
Yandex Trojan.GenAsa!+OnE97yr71k
SentinelOne Static AI – Malicious PE
MaxSecure Ransomeware.CRAB.gen
Fortinet W32/Kryptik.FZYC!tr
AVG FileRepMalware
Paloalto generic.ml
Qihoo-360 Win32/Trojan.Generic.HwoCEpsA

How to remove Win32/Kryptik.FZYC 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.FZYC 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.FZYC 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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