Win32/Kryptik.GESY

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

What is Win32/Kryptik.GESY infection?

In this article you will discover regarding the definition of Win32/Kryptik.GESY and also its unfavorable influence on your computer system. Such ransomware are a kind of malware that is clarified by on the internet frauds to demand paying the ransom by a victim.

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Most of the instances, Win32/Kryptik.GESY ransomware will advise its victims to initiate funds move for the purpose of counteracting the changes that the Trojan infection has presented to the sufferer’s device.

Win32/Kryptik.GESY Summary

These adjustments 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.
  • 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.

  • 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.
  • Deletes its original binary from disk;
  • 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.
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records found on the target’s hard drive — so the target can no more make use of the data;
  • Preventing normal accessibility to the sufferer’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.GESY

One of the most common channels where Win32/Kryptik.GESY Ransomware are infused are:

  • By means of phishing emails;
  • As a consequence of user winding up on a resource that holds a harmful software application;

As quickly as the Trojan is effectively injected, it will certainly either cipher the information on the victim’s computer or stop the tool from operating in a correct manner – while likewise placing a ransom note that points out the demand for the victims to impact the repayment for the function of decrypting the records or recovering the data system back to the preliminary condition. In a lot of circumstances, the ransom note will certainly come up when the client restarts the PC after the system has actually currently been damaged.

Win32/Kryptik.GESY circulation networks.

In different corners of the world, Win32/Kryptik.GESY expands by jumps as well as bounds. Nonetheless, the ransom money notes as well as methods of obtaining the ransom money quantity might differ depending upon certain neighborhood (local) setups. The ransom money notes and techniques of obtaining the ransom quantity may differ depending on certain regional (local) setups.

Ransomware injection

As an example:

    Faulty alerts regarding unlicensed software program.

    In particular locations, the Trojans typically wrongfully report having actually identified some unlicensed applications made it possible for on the sufferer’s tool. The alert then demands the customer to pay the ransom.

    Faulty statements concerning unlawful content.

    In countries where software program piracy is less prominent, this approach is not as effective for the cyber scams. Conversely, the Win32/Kryptik.GESY popup alert may falsely assert to be originating from a police establishment and will report having situated youngster porn or other prohibited information on the tool.

    Win32/Kryptik.GESY popup alert may incorrectly declare to be acquiring from a legislation enforcement organization and will report having situated kid porn or other illegal information on the device. The alert will likewise contain a demand for the customer to pay the ransom.

Technical details

File Info:

crc32: 4EE9CE53
md5: 14395ac904015c1ca1ccb42df80a1859
name: 14395AC904015C1CA1CCB42DF80A1859.mlw
sha1: 781bcb5596fbcdaaa998ab77b4621c1000393fbd
sha256: 0c141c1fe62782cb78e70d7c57a7b7d07b26a93ee058d271ff7f2fe4c04bfef3
sha512: a8a7c54725c7803ee4da2d7afcbdf52de21faa1567fa46545c4b3b20c4909d110fa7ee356a84d53554660ea32bdde7f7108b6071c7121c9c7ee9a6275cdd8274
ssdeep: 3072:AsiXMqGmeABs/iOQlQF0fZyq/pRPFQrQKO854:BiRGzDB8MEptaO24
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (C) 2017, dogndgee
InternalName: sgahffjfghj.exe
FileVersion: 1.0.0.2
ProductVersion: 1.0.0.2
Translation: 0x0809 0x04b0

Win32/Kryptik.GESY also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
DrWeb BackDoor.IRC.Bot.5026
MicroWorld-eScan Trojan.Emotet.Gen.3
CAT-QuickHeal Trojan.Chapak.ZZ6
Cylance Unsafe
Zillya Trojan.Generic.Win32.297422
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Trojan:Win32/Gandcrab.006faf2b
K7GW Trojan ( 0053305e1 )
K7AntiVirus Trojan ( 0053305e1 )
Symantec Packed.Generic.525
ESET-NOD32 a variant of Win32/Kryptik.GESY
APEX Malicious
Avast Win32:Malware-gen
Cynet Malicious (score: 100)
Kaspersky HEUR:Trojan-Ransom.Win32.GandCrypt.gen
BitDefender Trojan.Emotet.Gen.3
NANO-Antivirus Trojan.Win32.Jimmy.ezdkby
Tencent Win32.Trojan.Generic.Dvpx
Ad-Aware Trojan.Emotet.Gen.3
Sophos Mal/Generic-S + Mal/GandCrab-A
Comodo TrojWare.Win32.Crypt.AEG@7ku1nk
F-Secure Heuristic.HEUR/AGEN.1117310
BitDefenderTheta Gen:NN.ZexaF.34608.iu0@aizQcfli
TrendMicro TSPY_EMOTET.SMB1
McAfee-GW-Edition BehavesLike.Win32.Generic.cc
FireEye Generic.mg.14395ac904015c1c
Emsisoft Trojan.Emotet.Gen.3 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan.Banker.Jimmy.ef
Avira HEUR/AGEN.1117310
Antiy-AVL Trojan[Banker]/Win32.Jimmy
Microsoft Trojan:Win32/Gandcrab.DHA!MTB
Arcabit Trojan.Emotet.Gen.3
AegisLab Trojan.Win32.Ursnif.tpnt
ZoneAlarm HEUR:Trojan-Ransom.Win32.GandCrypt.gen
GData Trojan.Emotet.Gen.3
AhnLab-V3 Win-Trojan/Gandcrab02.Exp
Acronis suspicious
McAfee GenericRXEK-XA!14395AC90401
MAX malware (ai score=95)
VBA32 BScope.Backdoor.IRC.Bot
Malwarebytes Trojan.MalPack
Panda Trj/Genetic.gen
TrendMicro-HouseCall TSPY_EMOTET.SMB1
Rising Trojan.Kryptik!1.B2F7 (CLOUD)
Yandex Trojan.GenAsa!UnDotkF5jcY
Ikarus Trojan-Ransom.GandCrab
MaxSecure Trojan.Ransom.GandCrab.Gen
Fortinet W32/Kryptik.GOGY!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Backdoor.Emotet.HgIASOcA

How to remove Win32/Kryptik.GESY 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

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.GESY 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.GESY 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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