Win32/Kryptik.GZYC

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

What is Win32/Kryptik.GZYC infection?

In this short article you will discover concerning the meaning of Win32/Kryptik.GZYC and also its adverse effect on your computer system. Such ransomware are a type of malware that is elaborated by on the internet fraudulences to require paying the ransom by a victim.

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Most of the cases, Win32/Kryptik.GZYC infection will certainly advise its targets to launch funds transfer for the purpose of reducing the effects of the changes that the Trojan infection has actually introduced to the target’s device.

Win32/Kryptik.GZYC Summary

These modifications 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.
  • Possible date expiration check, exits too soon after checking local time;
  • Attempts to connect to a dead IP:Port (254 unique times);
  • 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.

  • A process created a hidden window;
  • 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 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
  • 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.
  • Likely virus infection of existing system binary;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers situated on the victim’s hard disk — so the victim can no longer utilize the data;
  • Preventing routine access to the sufferer’s workstation;

Win32/Kryptik.GZYC

One of the most common networks where Win32/Kryptik.GZYC Trojans are injected are:

  • By ways of phishing emails;
  • As an effect of individual winding up on a source that hosts a destructive software;

As soon as the Trojan is successfully injected, it will certainly either cipher the data on the target’s PC or prevent the gadget from operating in an appropriate manner – while additionally putting a ransom note that discusses the demand for the targets to impact the repayment for the objective of decrypting the documents or restoring the file system back to the first condition. In a lot of instances, the ransom money note will show up when the customer restarts the PC after the system has currently been damaged.

Win32/Kryptik.GZYC circulation channels.

In different edges of the globe, Win32/Kryptik.GZYC grows by leaps and also bounds. Nevertheless, the ransom notes and also methods of extorting the ransom money quantity may vary relying on certain local (local) setups. The ransom notes as well as methods of obtaining the ransom quantity might vary depending on specific local (local) setups.

Ransomware injection

For instance:

    Faulty alerts concerning unlicensed software program.

    In particular locations, the Trojans usually wrongfully report having identified some unlicensed applications enabled on the victim’s gadget. The alert then demands the customer to pay the ransom money.

    Faulty declarations concerning unlawful web content.

    In nations where software piracy is much less popular, this technique is not as reliable for the cyber fraudulences. Additionally, the Win32/Kryptik.GZYC popup alert might falsely declare to be originating from a law enforcement institution and will certainly report having situated child pornography or other prohibited data on the device.

    Win32/Kryptik.GZYC popup alert might incorrectly assert to be acquiring from a legislation enforcement organization as well as will report having situated youngster pornography or other prohibited information on the gadget. The alert will in a similar way consist of a need for the user to pay the ransom money.

Technical details

File Info:

crc32: 814275A1
md5: 38edc4aeaa3693c67fe5cf9292c9c762
name: rfvchffouighn.exe
sha1: 5a9acee5dbcfc17e0a5b6d4ac145cdc340c0f71f
sha256: 6b78ad1d871efaf95ef0f48ac62bc00b948ea80f96ee21b4d29dbd76a0a10ee0
sha512: 801ee9c0059844c8c642ae7a8d66712884306e2e2cf15c4027a581335190e88449451f579e3fa85c06b03bf66e750d6ef9e9c09675c457e7de744a9bcc7f25b5
ssdeep: 1536:7J7ynZLG9XOgzg9LHcU7/icq+MewJkNMJl0mZqBDAXRmr6RStcvi+B:IZ4XOE2LHxHqfeMkk0DBv6Ryd+B
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (C) Banyoro 2019
InternalName: synastry.exe
FileVersion: 8.7.1.0
CompanyName: bopyrid
ProductName: six-gallon
ProductVersion: 3.6.4.8
FileDescription: vanes
OriginalFilename: orinasally.exe
Translation: 0x0409 0x04b0

Win32/Kryptik.GZYC also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetectVM.malware
MicroWorld-eScan Gen:Variant.Razy.598120
McAfee Artemis!38EDC4AEAA36
Cylance Unsafe
VIPRE Lookslike.Win32.Sirefef.c!ag (v)
Sangfor Malware
CrowdStrike win/malicious_confidence_100% (W)
BitDefender Gen:Variant.Razy.598120
K7GW Trojan ( 0055e6b21 )
K7AntiVirus Trojan ( 0055e6b21 )
Invincea heuristic
ESET-NOD32 a variant of Win32/Kryptik.GZYC
APEX Malicious
Paloalto generic.ml
Kaspersky Backdoor.Win32.Androm.tqug
Alibaba Trojan:Win32/Kryptik.66ee62ac
Rising Trojan.Kryptik!8.8 (TFE:3:YamrrBQ1nnP)
Endgame malicious (moderate confidence)
Emsisoft Gen:Variant.Razy.598120 (B)
F-Secure Trojan.TR/Crypt.XPACK.Gen
DrWeb Trojan.Inject3.32543
TrendMicro Trojan.Win32.WACATAC.USXVPA820
McAfee-GW-Edition BehavesLike.Win32.Emotet.mc
Trapmine malicious.high.ml.score
FireEye Generic.mg.38edc4aeaa3693c6
Sophos Mal/Generic-S
Ikarus Trojan.Win32.Crypt
Jiangmin Backdoor.Androm.asov
Fortinet W32/Kryptik.GZDN!tr
Arcabit Trojan.Razy.D92068
ZoneAlarm Backdoor.Win32.Androm.tqug
Microsoft Trojan:Win32/Wacatac.B!ml
AhnLab-V3 Win-Trojan/Malpacked3.Gen
Acronis suspicious
VBA32 BScope.Trojan.Nanocore
ALYac Trojan.Ransom.Crysis
MAX malware (ai score=81)
Ad-Aware Gen:Variant.Razy.598120
TrendMicro-HouseCall Trojan.Win32.WACATAC.USXVPA820
SentinelOne DFI – Malicious PE
GData Gen:Variant.Razy.598120
BitDefenderTheta Gen:NN.ZexaF.33558.fC3@aKYeR3fi
AVG FileRepMalware
Qihoo-360 Win32/Backdoor.810

How to remove Win32/Kryptik.GZYC 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

The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

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 install-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.GZYC 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.GZYC 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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