MSIL/Kryptik.OYM

What is MSIL/Kryptik.OYM infection?

In this post you will certainly locate about the interpretation of MSIL/Kryptik.OYM and its unfavorable impact on your computer. Such ransomware are a form of malware that is specified by on the internet fraudulences to demand paying the ransom money by a victim.

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Most of the situations, MSIL/Kryptik.OYM infection will certainly instruct its victims to initiate funds transfer for the objective of counteracting the amendments that the Trojan infection has presented to the target’s gadget.

MSIL/Kryptik.OYM Summary

These alterations 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.
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • 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.
  • Possible date expiration check, exits too soon after checking local time;
  • At least one IP Address, Domain, or File Name was found in a crypto call;
  • 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.

  • 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.
  • Executed a process and injected code into it, probably while unpacking;
  • Deletes its original binary from disk;
  • Attempts to delete volume shadow copies;
  • 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
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the documents found on the target’s hard disk drive — so the target can no longer utilize the information;
  • Preventing regular accessibility to the sufferer’s workstation;

MSIL/Kryptik.OYM

The most regular networks through which MSIL/Kryptik.OYM 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 resource that holds a malicious software;

As soon as the Trojan is effectively injected, it will certainly either cipher the information on the target’s computer or stop the device from functioning in an appropriate way – while also putting a ransom money note that mentions the need for the sufferers to impact the repayment for the purpose of decrypting the papers or recovering the data system back to the first problem. In many circumstances, the ransom note will certainly come up when the client restarts the COMPUTER after the system has currently been damaged.

MSIL/Kryptik.OYM distribution channels.

In numerous corners of the globe, MSIL/Kryptik.OYM expands by leaps and bounds. However, the ransom notes and also techniques of extorting the ransom amount might vary depending upon certain neighborhood (regional) setups. The ransom notes and tricks of extorting the ransom quantity might vary depending on specific neighborhood (regional) setups.

Ransomware injection

For example:

    Faulty informs about unlicensed software.

    In specific areas, the Trojans typically wrongfully report having actually identified some unlicensed applications enabled on the sufferer’s gadget. The alert then demands the customer to pay the ransom.

    Faulty declarations concerning unlawful web content.

    In countries where software piracy is less popular, this technique is not as efficient for the cyber fraudulences. Conversely, the MSIL/Kryptik.OYM popup alert might falsely assert to be deriving from a police organization and also will report having located kid pornography or various other prohibited data on the tool.

    MSIL/Kryptik.OYM popup alert might falsely declare to be obtaining from a regulation enforcement establishment as well as will certainly report having located kid pornography or other unlawful data on the tool. The alert will likewise have a demand for the customer to pay the ransom.

Technical details

File Info:

crc32: 3F6F749C
md5: cd22427fa3e4440c113e97938b878b61
name: CD22427FA3E4440C113E97938B878B61.mlw
sha1: 7399fdf59a695ad485896d879d31d9037c91750c
sha256: 745814224a9c23ecd49041459a215d63178859d2f12abecaf33f788f1797ccd5
sha512: 8d104d3a87f0fbd7e02d02ac32e671acb825ee3918758e7d3db7bc2f0e054ad2d9b0fcac40a6998abbe144c78c9aef03262189131a70389c8dab7aa0cffa6db2
ssdeep: 6144:CGsg/nPVu1+oPACnU23gWx2r+V4cAVQXHezLpSxCD:lf/nMb3Hx2cAVQ3coxC
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

0: [No Data]

MSIL/Kryptik.OYM also known as:

GridinSoft Trojan.Ransom.Gen
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.3953
Cynet Malicious (score: 100)
ALYac Trojan.Ransom.Crysis
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
BitDefender Gen:Variant.MSIL.Crypt.4
Cybereason malicious.fa3e44
Cyren W32/S-4ae8e800!Eldorado
Symantec Downloader
ESET-NOD32 a variant of MSIL/Kryptik.OYM
APEX Malicious
Kaspersky HEUR:Trojan-Ransom.Win32.Generic
MicroWorld-eScan Gen:Variant.MSIL.Crypt.4
Tencent Win32.Trojan.Generic.Szbe
Ad-Aware Gen:Variant.MSIL.Crypt.4
Sophos Mal/Generic-S
Comodo Malware@#31tv8j9nbbqin
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.CryptDoma.fc
FireEye Generic.mg.cd22427fa3e4440c
Emsisoft Gen:Variant.MSIL.Crypt.4 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Scarsi.bfa
Webroot Trojan.Dropper.Gen
Avira HEUR/AGEN.1138724
Microsoft Trojan:Win32/Occamy.C74
AegisLab Trojan.Win32.Generic.j!c
GData MSIL.Trojan-Ransom.Crysis.A
AhnLab-V3 Trojan/Win32.Crusis.C2602497
McAfee RDN/Ransom.dz
MAX malware (ai score=95)
VBA32 Trojan.Encoder
Malwarebytes Ransom.Crysis
Panda Trj/RansomCrypt.E
Ikarus Trojan.MSIL.Crypt
Fortinet MSIL/Kryptik.OJV!tr
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Generic.HxQBEpsA

How to remove MSIL/Kryptik.OYM 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.OYM 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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If the guide doesn’t help you to remove MSIL/Kryptik.OYM 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/products/

About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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