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

What is MSIL/Kryptik.FRJ infection?

In this post you will certainly find about the definition of MSIL/Kryptik.FRJ and also its adverse influence on your computer. Such ransomware are a form of malware that is specified by on-line frauds to demand paying the ransom by a victim.

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In the majority of the cases, MSIL/Kryptik.FRJ ransomware will advise its victims to start funds move for the objective of reducing the effects of the changes that the Trojan infection has actually presented to the target’s gadget.

MSIL/Kryptik.FRJ 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.
  • 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.
  • 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.

  • Ciphering the files found on the sufferer’s hard drive — so the target can no longer utilize the information;
  • Preventing regular accessibility to the target’s workstation;


The most normal networks whereby MSIL/Kryptik.FRJ Ransomware Trojans 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 repercussion of user ending up on a resource that organizes a destructive software application;

As quickly as the Trojan is effectively infused, it will certainly either cipher the information on the victim’s computer or stop the device from operating in a proper fashion – while likewise placing a ransom note that points out the need for the targets to effect the repayment for the purpose of decrypting the files or recovering the file system back to the first problem. In the majority of circumstances, the ransom money note will certainly turn up when the customer reboots the COMPUTER after the system has actually already been harmed.

MSIL/Kryptik.FRJ distribution channels.

In various corners of the world, MSIL/Kryptik.FRJ grows by jumps as well as bounds. Nonetheless, the ransom money notes and methods of obtaining the ransom money quantity might vary depending upon particular local (local) setups. The ransom notes and also techniques of obtaining the ransom money amount may vary depending on specific regional (local) settings.

Ransomware injection

As an example:

    Faulty signals about unlicensed software program.

    In specific locations, the Trojans frequently wrongfully report having actually detected some unlicensed applications made it possible for on the sufferer’s gadget. The sharp then requires the individual to pay the ransom.

    Faulty statements concerning unlawful web content.

    In nations where software application piracy is less preferred, this technique is not as reliable for the cyber fraudulences. Additionally, the MSIL/Kryptik.FRJ popup alert might incorrectly claim to be deriving from a law enforcement establishment as well as will certainly report having located youngster pornography or various other unlawful data on the tool.

    MSIL/Kryptik.FRJ popup alert might incorrectly declare to be deriving from a legislation enforcement organization and also will report having situated youngster pornography or other prohibited data on the gadget. The alert will likewise contain a need for the individual to pay the ransom money.

Technical details

File Info:

crc32: B00C891C
md5: 08de2e3ed78035e9c2b01da523175217
name: 08DE2E3ED78035E9C2B01DA523175217.mlw
sha1: 39048b8c25b7d666c9c6d88b129e72b89a732c5f
sha256: 0031cd509e7877f7cfa2f2193da557bd3b5a4dfcfefc7e4ba840fea4a05592f7
sha512: 2e81dd8e5e3f4a2faf3a704ef10337d5c17451e0a51b2d56c9fc5ec42c64efd87fa50a722e1c7838e6286272645ae91ca854e67e6eb10b64e6d76bddfb26aba5
ssdeep: 3072:LRqwWJYeSGh/flTxPUiVOrBD8AqT5J5MW8mIrYIRzZ:UJYu1xP9UrBDxq7M5B
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: jSMBFx2c3ozM44Z7C34ut328C4hJr8p2vu
Assembly Version:
InternalName: C:Users\x633x639x648x62fDesktopBabelOut8888888.exe
CompanyName: fNjS7Yg8lL6Z2bD2ZuH2rtUZ1275E0178
ProductName: ex917nCFH8UQeXv6IUN
FileDescription: eDfS165CXzU063775Of8yALyDQhkCBt0A1r95gu3VQjnSg9s2
OriginalFilename: C:Users\x633x639x648x62fDesktopBabelOut8888888.exe

MSIL/Kryptik.FRJ also known as:

K7AntiVirusTrojan ( 004e206d1 )
Elasticmalicious (high confidence)
CynetMalicious (score: 90)
CrowdStrikewin/malicious_confidence_100% (W)
K7GWTrojan ( 004e206d1 )
ESET-NOD32a variant of MSIL/Kryptik.FRJ
SophosML/PE-A + Troj/MSIL-ILJ
EmsisoftGen:Variant.Ursu.413193 (B)
SentinelOneStatic AI – Malicious PE
MAXmalware (ai score=87)
RisingRansom.Blocker!8.12A (CLOUD)

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

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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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