MSIL/Kryptik.JWL

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

What is MSIL/Kryptik.JWL infection?

In this short article you will discover about the interpretation of MSIL/Kryptik.JWL as well as its negative effect on your computer system. Such ransomware are a type of malware that is specified by on-line scams to require paying the ransom by a victim.

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Most of the instances, MSIL/Kryptik.JWL virus will certainly advise its targets to initiate funds transfer for the function of counteracting the modifications that the Trojan infection has actually introduced to the target’s device.

MSIL/Kryptik.JWL 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.
  • Attempts to connect to a dead IP:Port (1 unique times);
  • 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.
  • A process attempted to delay the analysis task.;
  • 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;
  • Ciphering the documents located on the victim’s hard drive — so the sufferer can no longer use the data;
  • Preventing routine access to the target’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
btc1234.ddns.netHEUR:Trojan-Ransom.MSIL.Blocker.gen

MSIL/Kryptik.JWL

The most normal networks whereby MSIL/Kryptik.JWL are infused are:

  • By means of phishing emails;
  • As an effect of user winding up on a resource that holds a destructive software application;

As quickly as the Trojan is effectively infused, it will certainly either cipher the data on the sufferer’s PC or protect against the tool from functioning in an appropriate way – while additionally placing a ransom note that states the demand for the victims to effect the repayment for the objective of decrypting the records or bring back the documents system back to the first condition. In many instances, the ransom money note will show up when the customer restarts the PC after the system has actually currently been harmed.

MSIL/Kryptik.JWL circulation networks.

In numerous edges of the globe, MSIL/Kryptik.JWL grows by jumps and also bounds. Nonetheless, the ransom notes as well as methods of obtaining the ransom money amount may differ depending upon certain neighborhood (local) setups. The ransom notes and also tricks of extorting the ransom amount might vary depending on particular local (regional) setups.

Ransomware injection

For example:

    Faulty informs regarding unlicensed software application.

    In specific areas, the Trojans frequently wrongfully report having discovered some unlicensed applications allowed on the victim’s tool. The alert after that demands the customer to pay the ransom money.

    Faulty declarations regarding illegal material.

    In nations where software application piracy is much less popular, this approach is not as reliable for the cyber scams. Additionally, the MSIL/Kryptik.JWL popup alert may incorrectly declare to be deriving from a police organization as well as will report having located child porn or various other prohibited information on the device.

    MSIL/Kryptik.JWL popup alert might incorrectly claim to be acquiring from a legislation enforcement establishment as well as will report having located child porn or other illegal information on the tool. The alert will in a similar way have a demand for the individual to pay the ransom.

Technical details

File Info:

crc32: 6FEE84F3
md5: 818a5b5935d58afd4ed18e8cda015b56
name: 818A5B5935D58AFD4ED18E8CDA015B56.mlw
sha1: 1c3ab54063f114bb337d2bb2baf664c464f1f564
sha256: f4b28115f4ef2c7ed2cd08ea941344d95d51a68cb95ac7edf50d96f8bff89675
sha512: dc73a46422e5483dca4d55840b915f6c7d71610caa7d2b913a839539ac6e3b5bbe1c5824614198fa7944aa7e50d3b6e51019377cf334070b4e011f71a9e1797a
ssdeep: 12288:qzW8B1F9A0tJY0+dUb611zrW64/9Tl7sqzBLp828WZ2masz7WrPW:qiKlAD0Pqf4hV8KZ2ycPW
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

LegalCopyright: xa9 Microsoft Corporation. All rights reserved.
InternalName: svchost.exe
CompanyName: Microsoft Corporation
ProductName: Microsoftxae Windowsxae Operating System
FileDescription: Host Process for Windows Services
OriginalFilename: Microsoft Corporation.exe
Translation: 0x0000 0x04b0

MSIL/Kryptik.JWL also known as:

GridinSoftTrojan.Ransom.Gen
Elasticmalicious (high confidence)
DrWebTrojan.MulDrop16.60134
CynetMalicious (score: 100)
ALYacGen:Heur.MSIL.Krypt.2
CylanceUnsafe
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (D)
Cybereasonmalicious.935d58
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of MSIL/Kryptik.JWL
APEXMalicious
AvastWin32:Trojan-gen
KasperskyHEUR:Trojan-Ransom.MSIL.Blocker.gen
BitDefenderGen:Heur.MSIL.Krypt.2
MicroWorld-eScanGen:Heur.MSIL.Krypt.2
Ad-AwareGen:Heur.MSIL.Krypt.2
SophosML/PE-A
F-SecureBackdoor.BDS/Backdoor.Gen
BitDefenderThetaGen:NN.ZemsilF.34688.5m0@aK8naMj
McAfee-GW-EditionArtemis!Trojan
FireEyeGeneric.mg.818a5b5935d58afd
EmsisoftGen:Heur.MSIL.Krypt.2 (B)
SentinelOneStatic AI – Malicious PE
AviraBDS/Backdoor.Gen
eGambitUnsafe.AI_Score_100%
MicrosoftBackdoor:Win32/Bladabindi!ml
ArcabitTrojan.MSIL.Krypt.2
ZoneAlarmHEUR:Trojan-Ransom.MSIL.Blocker.gen
GDataGen:Heur.MSIL.Krypt.2
AhnLab-V3Trojan/Win32.RL_Generic.C4228069
McAfeeArtemis!818A5B5935D5
MAXmalware (ai score=87)
MalwarebytesTrojan.FakeMS
FortinetMSIL/Agent.AIK!tr
AVGWin32:Trojan-gen

How to remove MSIL/Kryptik.JWL virus?

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 MSIL/Kryptik.JWL 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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Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove MSIL/Kryptik.JWL 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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