MSIL/Kryptik.EPI

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

What is MSIL/Kryptik.EPI infection?

In this short article you will find concerning the meaning of MSIL/Kryptik.EPI and also its adverse impact on your computer system. Such ransomware are a type of malware that is elaborated by on-line frauds to require paying the ransom by a victim.

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In the majority of the situations, MSIL/Kryptik.EPI virus will certainly instruct its victims to initiate funds move for the objective of counteracting the changes that the Trojan infection has actually presented to the target’s device.

MSIL/Kryptik.EPI Summary

These adjustments 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.
  • Injection (inter-process);
  • Injection with CreateRemoteThread in a remote process;
  • 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.
  • Detected script timer window indicative of sleep style evasion;
  • 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.
  • A scripting utility was executed;
  • Uses Windows utilities for basic functionality;
  • Code injection with CreateRemoteThread in a remote process;
  • Sniffs keystrokes;
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • 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.
  • Likely virus infection of existing system binary;
  • Creates a copy of itself;
  • The sample wrote data to the system hosts file.;
  • Creates known SpyNet mutexes and/or registry changes.;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the papers situated on the sufferer’s hard disk — so the target can no more utilize the information;
  • Preventing regular 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.

MSIL/Kryptik.EPI

One of the most normal networks whereby MSIL/Kryptik.EPI Ransomware are infused are:

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

As quickly as the Trojan is successfully infused, it will either cipher the information on the sufferer’s computer or avoid the device from working in an appropriate manner – while additionally placing a ransom money note that discusses the need for the sufferers to impact the payment for the purpose of decrypting the records or recovering the data system back to the first condition. In the majority of circumstances, the ransom money note will come up when the customer reboots the PC after the system has already been damaged.

MSIL/Kryptik.EPI distribution networks.

In numerous corners of the world, MSIL/Kryptik.EPI grows by leaps and also bounds. Nonetheless, the ransom notes and also techniques of obtaining the ransom money amount may differ depending on particular regional (local) settings. The ransom money notes as well as techniques of obtaining the ransom quantity might vary depending on certain regional (local) settings.

Ransomware injection

For instance:

    Faulty informs regarding unlicensed software.

    In particular locations, the Trojans often wrongfully report having identified some unlicensed applications allowed on the target’s gadget. The sharp then demands the customer to pay the ransom.

    Faulty statements regarding prohibited material.

    In nations where software program piracy is much less prominent, this approach is not as effective for the cyber fraudulences. Conversely, the MSIL/Kryptik.EPI popup alert may incorrectly declare to be stemming from a police institution as well as will report having located youngster pornography or other illegal data on the device.

    MSIL/Kryptik.EPI popup alert may falsely assert to be deriving from a legislation enforcement institution as well as will certainly report having located kid pornography or various other illegal information on the gadget. The alert will in a similar way contain a need for the individual to pay the ransom.

Technical details

File Info:

crc32: DBC6BD4D
md5: c277ec4cc93e2574ab38c3fdd5112e6a
name: C277EC4CC93E2574AB38C3FDD5112E6A.mlw
sha1: 1a8ffc197376d5c25a3a1b1225c283035fbb997b
sha256: 0c1a6ad8b0f7b5b31633723efaa7775bb7a9cc7003182ad8b58a8ffe3b3a28d5
sha512: dc82bced7524fc7555fcd1e7d48cf8fd144112e94dc0ad9b49bedf436513fce5202a9d462f0247a0bef254041130bf28b23e5a6e056170130de2a37421c34b5b
ssdeep: 24576:enBP2K3o6wF7vrxAHDFyMwhg9dT+b9JMjBema8rROos/mxF7vpgC:en52K46wF7j+Hht91+7kemkmxFD
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: Copyright xa9 2004
Assembly Version: 38.85.89.29
InternalName: 30.EXE
FileVersion: 45.72.77.57
Comments: WindowsApplication9
ProductName: WindowsApplication9
ProductVersion: 45.72.77.57
FileDescription: WindowsApplication9
OriginalFilename: 30.EXE

MSIL/Kryptik.EPI also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 004d97d71 )
Elastic malicious (high confidence)
Cynet Malicious (score: 100)
ALYac Gen:Variant.Ursu.346745
Cylance Unsafe
Zillya Dropper.Blocker.Win32.285
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Trojan:Win32/Starter.ali2000005
K7GW Trojan ( 004d97d71 )
Cybereason malicious.cc93e2
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of MSIL/Kryptik.EPI
APEX Malicious
Avast Win32:Malware-gen
Kaspersky HEUR:Trojan-Ransom.MSIL.Blocker.gen
BitDefender Gen:Variant.Ursu.346745
MicroWorld-eScan Gen:Variant.Ursu.346745
Tencent Msil.Trojan.Blocker.Swuh
Ad-Aware Gen:Variant.Ursu.346745
Sophos Mal/Generic-S
Comodo Malware@#2ex07b1qykr9q
F-Secure Trojan.TR/Dropper.Gen
BitDefenderTheta Gen:NN.ZemsilF.34608.zr0@aino7ik
McAfee-GW-Edition BehavesLike.Win32.Generic.tc
FireEye Generic.mg.c277ec4cc93e2574
Emsisoft Gen:Variant.Ursu.346745 (B)
SentinelOne Static AI – Malicious PE
Avira TR/Dropper.Gen
eGambit Unsafe.AI_Score_100%
Antiy-AVL Trojan[Ransom]/MSIL.Blocker
Microsoft Trojan:Win32/Occamy.C
Arcabit Trojan.Ursu.D54A79
AegisLab Trojan.MSIL.Blocker.4!c
ZoneAlarm HEUR:Trojan-Ransom.MSIL.Blocker.gen
GData Gen:Variant.Ursu.346745
McAfee Artemis!C277EC4CC93E
MAX malware (ai score=82)
VBA32 CIL.StupidPInvoker-2.Heur
Malwarebytes MachineLearning/Anomalous.100%
Panda Trj/GdSda.A
Ikarus Trojan.MSIL.Crypt
Fortinet MSIL/Kryptik.QGB!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Trojan.Ransom.8af

How to remove MSIL/Kryptik.EPI 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 MSIL/Kryptik.EPI 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.EPI 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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