Ransom.Crypton

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

What is Ransom.Crypton infection?

In this short article you will locate regarding the definition of Ransom.Crypton and also its unfavorable effect on your computer system. Such ransomware are a form of malware that is elaborated by online frauds to demand paying the ransom money by a sufferer.

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Most of the instances, Ransom.Crypton ransomware will instruct its victims to launch funds move for the objective of reducing the effects of the amendments that the Trojan infection has introduced to the target’s device.

Ransom.Crypton Summary

These modifications can be as complies with:

  • 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.
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic;
  • Performs some HTTP requests;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • 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
  • Writes a potential ransom message to disk;
  • Ciphering the files located on the sufferer’s hard disk drive — so the sufferer can no longer make use of the information;
  • Preventing routine accessibility to the victim’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.

Ransom.Crypton

One of the most normal networks through which Ransom.Crypton are injected are:

  • By means of phishing emails;
  • As a consequence of user ending up on a resource that hosts a destructive software;

As soon as the Trojan is successfully injected, it will certainly either cipher the data on the victim’s computer or prevent the device from operating in a proper manner – while likewise placing a ransom money note that discusses the need for the victims to impact the settlement for the function of decrypting the records or restoring the data system back to the first condition. In many circumstances, the ransom money note will turn up when the customer restarts the PC after the system has already been damaged.

Ransom.Crypton distribution networks.

In various corners of the globe, Ransom.Crypton expands by leaps and also bounds. Nevertheless, the ransom money notes and also tricks of obtaining the ransom quantity may vary depending upon particular local (local) settings. The ransom notes as well as techniques of extorting the ransom money amount might differ depending on particular regional (regional) setups.

Ransomware injection

For instance:

    Faulty alerts about unlicensed software.

    In certain areas, the Trojans frequently wrongfully report having found some unlicensed applications allowed on the sufferer’s gadget. The sharp then requires the customer to pay the ransom money.

    Faulty statements about illegal web content.

    In countries where software application piracy is less preferred, this approach is not as efficient for the cyber frauds. Conversely, the Ransom.Crypton popup alert may wrongly assert to be stemming from a police institution and will report having located kid porn or other illegal information on the device.

    Ransom.Crypton popup alert might falsely declare to be acquiring from a regulation enforcement establishment as well as will report having situated kid porn or other unlawful data on the gadget. The alert will likewise consist of a requirement for the customer to pay the ransom.

Technical details

File Info:

crc32: 2A31CDF5
md5: 33b1f895b3905d4591207565ebfefef4
name: mtx777.exe
sha1: 95dd25f7e36c18e90f5920d151fb808368fe3e12
sha256: f6d53e15abbb9743eabf99eb208843494ba8092d426e253ff96bf00b6271c068
sha512: 0102f1ec855b09a20064a2a1983e7347b0a65b5440a08ab1d377429fb033bb984c67e50d460951054901c023716b62f2aa1ab149493c9dc134782abb7fa87bbb
ssdeep: 12288:JwtYpqXFBJyTxqXE3CqW/cmccRBJA1W58y0OSnAnL3DbFR0b2+mjxDybwd0YnAj:JtpmyTxq0SqWk1+Bia/0OSuoalObWhA
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright xa9 2016 All rights reserved. JetSmarter
FileVersion: 5.4.4.6
CompanyName: JetSmarter
PrivateBuild: 5.4.4.6
Comments: Offenders Packet Attacked Degrades
ProductName: EffectivelyCloneable
ProductVersion: 5.4.4.6
FileDescription: Offenders Packet Attacked Degrades
OriginalFilename: EffectivelyCloneable
Translation: 0x0409 0x04b0

Ransom.Crypton also known as:

GridinSoft Trojan.Ransom.Gen
MicroWorld-eScan Trojan.GenericKD.32903968
McAfee Artemis!33B1F895B390
VIPRE Trojan.Win32.Generic!BT
Sangfor Malware
K7AntiVirus Trojan ( 0055e4741 )
BitDefender Trojan.GenericKD.32903968
K7GW Trojan ( 0055e4741 )
Arcabit Trojan.Generic.D1F61320
TrendMicro Adware.Win32.YoutubeDownloaderGuru.USXVPA420
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Generik.MXBHIZS
APEX Malicious
Avast Win32:Malware-gen
Kaspersky Trojan-PSW.MSIL.Azorult.ab
Paloalto generic.ml
Endgame malicious (high confidence)
Emsisoft Trojan.GenericKD.32903968 (B)
F-Secure Trojan.TR/PSW.Azorult.dfarv
DrWeb Trojan.Encoder.30495
Invincea heuristic
McAfee-GW-Edition BehavesLike.Win32.Rootkit.jc
FireEye Trojan.GenericKD.32903968
Sophos Mal/Generic-S
Jiangmin Trojan.PSW.MSIL.por
Avira TR/PSW.Azorult.dfarv
Microsoft Trojan:Win32/Occamy.C
ZoneAlarm Trojan-PSW.MSIL.Azorult.ab
ALYac Trojan.Ransom.Filecoder
MAX malware (ai score=86)
Ad-Aware Trojan.GenericKD.32903968
Malwarebytes Ransom.Crypton
TrendMicro-HouseCall Adware.Win32.YoutubeDownloaderGuru.USXVPA420
Ikarus Trojan.SuspectCRC
eGambit Unsafe.AI_Score_99%
GData Trojan.GenericKD.32903968
BitDefenderTheta Gen:NN.ZexaF.33558.Pu0@aWBFQvoi
AVG Win32:Malware-gen
Panda Trj/CI.A
CrowdStrike win/malicious_confidence_90% (W)
Qihoo-360 Trojan.Generic

How to remove Ransom.Crypton 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

The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

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 install-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 Ransom.Crypton 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 Ransom.Crypton 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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