Win32/Kryptik.EGRN

Written by Robert Bailey

What is Win32/Kryptik.EGRN infection?

In this post you will certainly locate regarding the meaning of Win32/Kryptik.EGRN and its unfavorable impact 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 sufferer.

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In the majority of the instances, Win32/Kryptik.EGRN ransomware will instruct its victims to start funds transfer for the function of neutralizing the modifications that the Trojan infection has actually presented to the sufferer’s gadget.

Win32/Kryptik.EGRN 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.
  • Compression (or decompression);
  • 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.
  • Attempts to stop active services;
  • 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.
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Operates on local firewall’s policies and settings;
  • Creates a copy of itself;
  • Attempts to disable UAC.

    User Account Control or just UAC is a part of the Windows security system which prevents apps from making unwanted changes on PC.

    UAC includes several technologies 1:

    • File and egistry Virtualization;
    • Same-desktop Elevation;
    • Filtered Token;
    • User Interface Privilege Isolation;
    • Protected Mode Internet Explorer;
    • Installer Detection;
  • Attempts to disable Windows Defender;
  • Attempts to modify or disable Security Center warnings;
  • Ciphering the records situated on the target’s hard drive — so the sufferer 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.
Similar behavior
Related domains
z.whorecord.xyz Trojan.Ransom.GenericKD.30356595
a.tomx.xyz Trojan.Ransom.GenericKD.30356595

Win32/Kryptik.EGRN

One of the most regular networks whereby Win32/Kryptik.EGRN Ransomware are injected are:

  • By ways of phishing emails;
  • As a repercussion of user ending up on a source that organizes a harmful software program;

As quickly as the Trojan is efficiently injected, it will certainly either cipher the information on the target’s computer or protect against the tool from operating in an appropriate way – while likewise placing a ransom note that mentions the need for the victims to impact the settlement for the objective of decrypting the documents or recovering the file system back to the preliminary problem. In a lot of circumstances, the ransom note will certainly turn up when the customer reboots the PC after the system has actually currently been damaged.

Win32/Kryptik.EGRN circulation networks.

In different corners of the globe, Win32/Kryptik.EGRN grows by leaps and also bounds. Nonetheless, the ransom notes as well as tricks of extorting the ransom money amount might vary depending on specific local (local) setups. The ransom money notes and methods of extorting the ransom quantity may differ depending on certain local (local) settings.

Ransomware injection

For example:

    Faulty notifies regarding unlicensed software application.

    In certain areas, the Trojans frequently wrongfully report having discovered some unlicensed applications made it possible for on the sufferer’s device. The alert after that demands the customer to pay the ransom.

    Faulty statements concerning unlawful web content.

    In countries where software program piracy is much less prominent, this technique is not as efficient for the cyber scams. Additionally, the Win32/Kryptik.EGRN popup alert may wrongly claim to be originating from a police institution and also will certainly report having located kid pornography or various other illegal information on the gadget.

    Win32/Kryptik.EGRN popup alert might wrongly assert to be acquiring from a law enforcement institution and will certainly report having situated kid porn or various other prohibited information on the gadget. The alert will similarly consist of a need for the user to pay the ransom.

Technical details

File Info:

crc32: C6B65449
md5: 5da19845b858bd54b7df838476d3e689
name: 5DA19845B858BD54B7DF838476D3E689.mlw
sha1: 36f96c540a87aa5d33057a8aeee44495a6dc2162
sha256: 9cc31ee15b7864833db03371b772a609f41c99a860f31ab56f3da91090d63d3b
sha512: 148ec6649fd2e8fa3a3176a2e7e916e772448f1e59429b4f175342a44f252a65e338b0e94c9b03b02a8a3de4c2a7e2e386e7ad0735b71140dfe453d2fcb2b604
ssdeep: 3072:SrPo8sT6pxPw/LjUj0/uY/ufsbTH1mFduChWFJQ4rrY2P5fvM3R2Mxt:VKoLjUYuYKGBmFduChW/rM0fcRhT
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (C) 2014
InternalName: Showmen
FileVersion: 32, 33, 11, 34
CompanyName: Qbik Software NZ Ltd
LegalTrademarks:
ProductName: Uncalibrated Wildfires
ProductVersion: 95, 135, 80, 97
FileDescription: Rocket
OriginalFilename: Tactile.exe

Win32/Kryptik.EGRN also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Trojan ( 0055dd191 )
Elastic malicious (high confidence)
DrWeb Win32.HLLM.Reset.756
Cynet Malicious (score: 100)
ALYac Trojan.Ransom.GenericKD.30356595
Cylance Unsafe
Zillya Trojan.Nimnul.Win32.488
Sangfor Trojan.Win32.Save.a
Alibaba TrojanDropper:Win32/Nimnul.92abf97f
K7GW Trojan ( 0055dd191 )
Cybereason malicious.5b858b
Symantec Ransom.Cryptodefense
ESET-NOD32 a variant of Win32/Kryptik.EGRN
APEX Malicious
Avast FileRepMalware
Kaspersky Trojan.Win32.Nimnul.vvh
BitDefender Trojan.Ransom.GenericKD.30356595
NANO-Antivirus Trojan.Win32.Reset.dzhybg
MicroWorld-eScan Trojan.Ransom.GenericKD.30356595
Tencent Malware.Win32.Gencirc.10c8aee5
Ad-Aware Trojan.Ransom.GenericKD.30356595
Sophos Mal/Generic-S
BitDefenderTheta Gen:NN.ZexaF.34690.xq0@aePYNqji
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_HPLOCKY.SM1
McAfee-GW-Edition GenericRXEG-SC!5DA19845B858
FireEye Generic.mg.5da19845b858bd54
Emsisoft Trojan.Ransom.GenericKD.30356595 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Nimnul.bg
Avira HEUR/AGEN.1117932
Antiy-AVL Trojan/Generic.ASMalwS.16364D0
Microsoft TrojanDropper:Win32/Evotob.B
Arcabit Trojan.Ransom.Generic.D1CF3473
AegisLab Trojan.Win32.Nimnul.4!c
GData Trojan.Ransom.GenericKD.30356595
McAfee GenericRXEG-SC!5DA19845B858
MAX malware (ai score=95)
VBA32 SScope.Malware-Cryptor.Drixed
Malwarebytes MachineLearning/Anomalous.100%
Panda Trj/CI.A
TrendMicro-HouseCall Ransom_HPLOCKY.SM1
Rising Virus.Ramnit!8.4 (CLOUD)
Yandex Trojan.GenAsa!Vw+WuYYOAYU
Ikarus Trojan.Win32.Crypt
Fortinet W32/Kryptik.EFAD!tr
AVG FileRepMalware
Paloalto generic.ml

How to remove Win32/Kryptik.EGRN 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 GridinSoft2

There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft3.

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.EGRN 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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Win32/Kryptik.EGRN you can always ask me in the comments for getting help.

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References

  1. Microsoft Ignite: How to disable User Account Control (UAC) on Windows Server
  2. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  3. More information about GridinSoft products: https://gridinsoft.com/products/

About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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