MSIL/Kryptik.JUG

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

What is MSIL/Kryptik.JUG infection?

In this post you will certainly find about the meaning of MSIL/Kryptik.JUG and its adverse impact on your computer. Such ransomware are a kind of malware that is specified by online frauds to require paying the ransom by a sufferer.

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In the majority of the cases, MSIL/Kryptik.JUG ransomware will certainly instruct its targets to initiate funds transfer for the objective of neutralizing the changes that the Trojan infection has presented to the target’s tool.

MSIL/Kryptik.JUG 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.
  • 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.;
  • 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;
  • 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.
  • Uses Windows utilities for basic functionality;
  • Attempts to remove evidence of file being downloaded from the Internet;
  • Sniffs keystrokes;
  • 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.
  • Checks the presence of disk drives in the registry, possibly for anti-virtualization;
  • Creates a copy of itself;
  • Creates a slightly modified copy of itself;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the records situated on the target’s hard drive — so the target can no more make use of the information;
  • Preventing routine access to the sufferer’s workstation;

MSIL/Kryptik.JUG

The most regular channels through which MSIL/Kryptik.JUG are infused are:

  • By ways of phishing e-mails;
  • As an effect of customer ending up on a source that holds a harmful software;

As soon as the Trojan is successfully injected, it will certainly either cipher the information on the sufferer’s computer or avoid the gadget from working in a correct fashion – while additionally placing a ransom note that points out the demand for the targets to impact the settlement for the function of decrypting the files or bring back the documents system back to the initial condition. In most circumstances, the ransom money note will come up when the customer restarts the PC after the system has currently been damaged.

MSIL/Kryptik.JUG distribution networks.

In numerous corners of the world, MSIL/Kryptik.JUG expands by leaps and bounds. However, the ransom notes and also techniques of obtaining the ransom money amount may differ depending on particular regional (regional) settings. The ransom notes and methods of obtaining the ransom money quantity may vary depending on particular local (local) settings.

Ransomware injection

For example:

    Faulty informs about unlicensed software application.

    In certain locations, the Trojans commonly wrongfully report having actually identified some unlicensed applications made it possible for on the sufferer’s gadget. The sharp after that demands the user to pay the ransom money.

    Faulty declarations about prohibited content.

    In countries where software program piracy is much less popular, this approach is not as reliable for the cyber frauds. Alternatively, the MSIL/Kryptik.JUG popup alert might wrongly declare to be deriving from a law enforcement establishment as well as will report having situated youngster porn or other unlawful data on the gadget.

    MSIL/Kryptik.JUG popup alert might falsely declare to be acquiring from a regulation enforcement organization and will report having situated kid porn or other prohibited information on the device. The alert will likewise consist of a requirement for the user to pay the ransom money.

Technical details

File Info:

crc32: 0D7ED2BA
md5: ddb4fa44db12a538acc90cf8b1069094
name: DDB4FA44DB12A538ACC90CF8B1069094.mlw
sha1: a59f76886c7716c13369b86d8c9feb44c658aa5a
sha256: 953974bfe5cc765886956fb3e8f31a37556b2dcc3cfe54467529e8d5ea1c8b41
sha512: a46cebfb3e46b46138abfa2548cda72cdda8d769dce5fa0cf22438dc7f807a41cb326af43f5949434d5825fdb29cfd43c2570e8aac90d852f26ccd203c1f86fc
ssdeep: 24576:wmnNcqq9VWkDDgL13IZE9KEzd49+wOrrGqBT9MpolxVQD0Ufi3VAvA:5NAcLlH9ZWmXGwT9MpolxVn
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

LegalCopyright: Copyright xa9 1996-2011 TechSmith Corp. All rights reserved.
InternalName: SnagPriv
FileVersion: 10.0.1.58
CompanyName: TechSmith Corporation
ProductName: SnagPriv
ProductVersion: 10.0.1.58
FileDescription: Snagit RPC Helper
OriginalFilename: SnagPriv.exe
Translation: 0x0409 0x04e4

MSIL/Kryptik.JUG also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 0050e9b41 )
Elastic malicious (high confidence)
DrWeb Trojan.Inject2.53681
Cynet Malicious (score: 90)
ALYac Gen:Variant.Ursu.184778
Cylance Unsafe
Zillya Trojan.Blocker.Win32.38153
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Blocker.a9426f1c
K7GW Trojan ( 0050e9b41 )
Cybereason malicious.4db12a
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of MSIL/Kryptik.JUG
APEX Malicious
Avast Win32:Malware-gen
Kaspersky Trojan-Ransom.Win32.Blocker.kaxu
BitDefender Gen:Variant.Ursu.184778
NANO-Antivirus Trojan.Win32.AD.epkiah
MicroWorld-eScan Gen:Variant.Ursu.184778
Tencent Malware.Win32.Gencirc.10bb458d
Ad-Aware Gen:Variant.Ursu.184778
Sophos Mal/Generic-S
Comodo Malware@#ubbqdx07j4iz
BitDefenderTheta Gen:NN.ZemsilF.34628.sn0@ayGK0oc
VIPRE Trojan.Win32.Generic!BT
TrendMicro RANSOM_CRYPBLOCKER_GG310065.UVPM
McAfee-GW-Edition GenericRXBS-NM!DDB4FA44DB12
FireEye Generic.mg.ddb4fa44db12a538
Emsisoft Gen:Variant.Ursu.184778 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.MSIL.gdvw
Webroot W32.Trojan.Gen
Avira HEUR/AGEN.1109014
eGambit Unsafe.AI_Score_96%
Microsoft Trojan:Win32/Skeeyah.A!rfn
Arcabit Trojan.Ursu.D2D1CA
AegisLab Trojan.Win32.Blocker.j!c
GData Gen:Variant.Ursu.184778
AhnLab-V3 Trojan/Win32.Blocker.C2001823
McAfee GenericRXBS-NM!DDB4FA44DB12
MAX malware (ai score=83)
VBA32 TScope.Trojan.MSIL
Malwarebytes Malware.AI.1179208050
Panda Trj/GdSda.A
TrendMicro-HouseCall RANSOM_CRYPBLOCKER_GG310065.UVPM
Rising Ransom.Blocker!8.12A (CLOUD)
Yandex Trojan.Blocker!rmtoAr5FTbA
Ikarus Trojan.MSIL.Krypt
MaxSecure Trojan.Malware.300983.susgen
Fortinet MSIL/Generic.AP.8AD432!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Blocker.HgIASOsA

How to remove MSIL/Kryptik.JUG 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.JUG 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.JUG 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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