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

What is MSIL/Kryptik.YUF infection?

In this post you will certainly find concerning the interpretation of MSIL/Kryptik.YUF and its unfavorable influence on your computer. Such ransomware are a type of malware that is specified by online fraudulences to require paying the ransom money by a sufferer.

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Most of the situations, MSIL/Kryptik.YUF ransomware will certainly instruct its victims to initiate funds transfer for the purpose of neutralizing the amendments that the Trojan infection has actually introduced to the sufferer’s tool.

MSIL/Kryptik.YUF Summary

These modifications can be as follows:

  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • 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.
  • Ciphering the records located on the sufferer’s hard disk drive — so the sufferer can no more utilize the information;
  • Preventing regular accessibility to the sufferer’s workstation;


One of the most typical networks where MSIL/Kryptik.YUF Ransomware 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 consequence of user winding up on a source that holds a harmful software;

As quickly as the Trojan is successfully infused, it will certainly either cipher the information on the target’s PC or protect against the device from working in a proper fashion – while additionally positioning a ransom note that discusses the demand for the victims to impact the settlement for the objective of decrypting the records or recovering the documents system back to the first problem. In many circumstances, the ransom note will show up when the customer restarts the COMPUTER after the system has actually already been harmed.

MSIL/Kryptik.YUF circulation channels.

In various corners of the globe, MSIL/Kryptik.YUF grows by jumps and also bounds. Nevertheless, the ransom notes and also tricks of extorting the ransom money amount might vary relying on particular local (regional) settings. The ransom notes as well as tricks of extorting the ransom amount might differ depending on certain local (regional) setups.

Ransomware injection

As an example:

    Faulty alerts regarding unlicensed software.

    In certain areas, the Trojans often wrongfully report having detected some unlicensed applications allowed on the sufferer’s device. The sharp after that demands the individual to pay the ransom money.

    Faulty declarations regarding prohibited material.

    In countries where software piracy is less popular, this approach is not as reliable for the cyber scams. Alternatively, the MSIL/Kryptik.YUF popup alert may wrongly claim to be deriving from a police institution and also will certainly report having situated child pornography or various other illegal data on the tool.

    MSIL/Kryptik.YUF popup alert might falsely assert to be acquiring from a legislation enforcement institution as well as will certainly report having situated kid porn or other illegal data on the device. The alert will similarly have a need for the individual to pay the ransom money.

Technical details

File Info:

crc32: BFBB7F5C
md5: 3e3d73e68d0fbb73115d94792bfe968e
name: 3E3D73E68D0FBB73115D94792BFE968E.mlw
sha1: 25d2ef790c93e704c23351196dbae1c197528251
sha256: 4c67722d6cbbdf3ca55c350488c348f1ccc5177727bd008c10856b16c8510b69
sha512: f9fcc7d35b5f35afcb4ba0e13f1f236d85937f1a351660c93347eb23cf097f54b4d1da91eb1d6dca1f68f7b6488c1183543ca670923f31d8cf09601192d4d99e
ssdeep: 12288:mHd7j4whhjZADjO53L0kdxG0T4Y7kSR1rbpzVzAst8LFeCriGwLd+4VZKmNdAA:mHRhjZUjO2eb4Erbpz186A
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: Copyright xa9 2019
Assembly Version:
InternalName: x6d5r.exe
ProductName: SnakeGame
FileDescription: SnakeGame
OriginalFilename: x6d5r.exe

MSIL/Kryptik.YUF also known as:

GridinSoft Trojan.Ransom.Gen
Elastic malicious (high confidence)
McAfee Artemis!3E3D73E68D0F
Malwarebytes Ransom.HiddenTear
AegisLab Trojan.MSIL.Stelega.i!c
BitDefender Trojan.GenericKDZ.71543
Cybereason malicious.90c93e
Arcabit Trojan.Ser.Ursu.D1E66
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of MSIL/Kryptik.YUF
APEX Malicious
Cynet Malicious (score: 100)
Kaspersky HEUR:Trojan-PSW.MSIL.Stelega.gen
Alibaba Trojan:Win32/starter.ali1000139
SUPERAntiSpyware Trojan.Agent/Gen-Injector
MicroWorld-eScan Gen:Variant.Ser.Ursu.7782
Ad-Aware Gen:Variant.Ser.Ursu.7782
Sophos ML/PE-A
TrendMicro Backdoor.MSIL.REMCOS.SM
McAfee-GW-Edition BehavesLike.Win32.Generic.jc
MaxSecure Trojan.Malware.300983.susgen
Emsisoft Trojan.Crypt (A)
Ikarus Trojan.MSIL.Crypt
MAX malware (ai score=87)
Kingsoft Win32.PSWTroj.Undef.(kcloud)
Gridinsoft Malware.Win32.Gen.vl!i
Microsoft Trojan:Win32/Woreflint.A!cl
ZoneAlarm HEUR:Trojan-PSW.MSIL.Stelega.gen
GData Gen:Variant.Ser.Ursu.7782
VBA32 CIL.HeapOverride.Heur
ALYac Gen:Variant.Ser.Ursu.7782
Cylance Unsafe
TrendMicro-HouseCall Backdoor.MSIL.REMCOS.SM
SentinelOne Static AI – Malicious PE
eGambit Unsafe.AI_Score_100%
Fortinet MSIL/GenKryptik.EWCI!tr
BitDefenderTheta Gen:NN.ZemsilF.34658.Mm0@aG0LMih

How to remove MSIL/Kryptik.YUF 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 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 MSIL/Kryptik.YUF 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 MSIL/Kryptik.YUF you can always ask me in the comments for getting help.

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  1. GridinSoft Anti-Malware Review from HowToFix site:
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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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