Win32/GenKryptik.CASI

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

What is Win32/GenKryptik.CASI infection?

In this short article you will certainly find regarding the definition of Win32/GenKryptik.CASI and its unfavorable impact on your computer. Such ransomware are a type of malware that is specified by on-line fraudulences to require paying the ransom money by a victim.

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In the majority of the situations, Win32/GenKryptik.CASI ransomware will certainly advise its sufferers to initiate funds move for the objective of reducing the effects of the changes that the Trojan infection has actually presented to the sufferer’s device.

Win32/GenKryptik.CASI Summary

These adjustments 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.
  • 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.
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • 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.

  • 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
  • Exhibits possible ransomware file modification behavior;
  • 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.
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files found on the sufferer’s hard disk — so the victim can no more utilize the data;
  • Preventing regular access 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.

Win32/GenKryptik.CASI

The most common channels where Win32/GenKryptik.CASI Ransomware are injected are:

  • By ways of phishing emails;
  • As a consequence of customer winding up on a resource that organizes a harmful software application;

As soon as the Trojan is effectively infused, it will certainly either cipher the data on the sufferer’s computer or avoid the tool from functioning in an appropriate manner – while also positioning a ransom note that discusses the requirement for the targets to impact the settlement for the objective of decrypting the papers or bring back the documents system back to the first problem. In many circumstances, the ransom money note will show up when the client restarts the PC after the system has currently been harmed.

Win32/GenKryptik.CASI distribution networks.

In various corners of the globe, Win32/GenKryptik.CASI expands by jumps and bounds. However, the ransom notes and also techniques of extorting the ransom money quantity may differ relying on specific neighborhood (local) settings. The ransom money notes as well as tricks of obtaining the ransom amount might vary depending on specific neighborhood (local) setups.

Ransomware injection

As an example:

    Faulty informs about unlicensed software program.

    In specific locations, the Trojans typically wrongfully report having detected some unlicensed applications allowed on the sufferer’s tool. The alert after that requires the user to pay the ransom money.

    Faulty statements concerning unlawful web content.

    In nations where software application piracy is less prominent, this approach is not as reliable for the cyber fraudulences. Conversely, the Win32/GenKryptik.CASI popup alert may falsely claim to be stemming from a law enforcement institution and also will certainly report having situated child porn or various other prohibited information on the gadget.

    Win32/GenKryptik.CASI popup alert may incorrectly declare to be acquiring from a legislation enforcement establishment as well as will report having located child pornography or other unlawful information on the gadget. The alert will in a similar way contain a requirement for the individual to pay the ransom.

Technical details

File Info:

crc32: 5C3E0DC2
md5: 0cfb2d4d544832babd1f7ffd85cfc1f9
name: 0CFB2D4D544832BABD1F7FFD85CFC1F9.mlw
sha1: 35b3bda93ad52fd674cb57a17565f7557dc09a71
sha256: 69fd6a7802a54632140d1c0c293386003c64c3ab2d1e0a0907ca1b5addc3d7d4
sha512: 94610f03529ce764425dfb38c94cc7622042f18613cf93839fd3bbeddd8000aa584c1f3f4d91271e5c66e375817c7bfb2633b84db3dee1e9af1f9948453d1c80
ssdeep: 6144:ChyI4qDLIyVBCbHoh9AbEn/Zl3/2BvqIq8JZqQiBfytCoQcVbJvNObbMl4:CoUBl9Abk/D3/2of8JZxy2gMl4
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: xa9Open Source Software community LGPL 2016 All rights reserved.
FileVersion: 3.2.6.3
CompanyName: Open Source Software community LGPL
PrivateBuild: 3.2.6.3
Comments: Began Hacker Weights
ProductName: SeleniumSca
ProductVersion: 3.2.6.3
FileDescription: Began Hacker Weights
OriginalFilename: SeleniumSca.exe
Translation: 0x0409 0x04b0

Win32/GenKryptik.CASI also known as:

GridinSoftTrojan.Ransom.Gen
K7AntiVirusTrojan ( 005329a31 )
Elasticmalicious (high confidence)
DrWebTrojan.Encoder.3953
ClamAVWin.Packer.MalwareCrypter-6620810-1
ALYacGen:Variant.Ransom.Ryuk.5
ZillyaTrojan.GenKryptik.Win32.16516
CrowdStrikewin/malicious_confidence_70% (D)
BitDefenderGen:Variant.Ransom.Ryuk.5
K7GWTrojan ( 005329a31 )
Cybereasonmalicious.d54483
ESET-NOD32a variant of Win32/GenKryptik.CASI
APEXMalicious
Paloaltogeneric.ml
CynetMalicious (score: 100)
NANO-AntivirusTrojan.Win32.Encoder.fdhrsi
MicroWorld-eScanGen:Variant.Ransom.Ryuk.5
TencentWin32.Trojan.Generic.Kgh
Ad-AwareGen:Variant.Ransom.Ryuk.5
SophosMal/Generic-S
ComodoMalware@#t45ssi64tkld
BitDefenderThetaGen:NN.ZexaF.34686.Hu0@aWtTgMni
VIPRETrojan.Win32.Generic!BT
McAfee-GW-EditionArtemis!Trojan
FireEyeGeneric.mg.0cfb2d4d544832ba
EmsisoftGen:Variant.Ransom.Ryuk.5 (B)
SentinelOneStatic AI – Suspicious PE
WebrootW32.Malware.Gen
AviraTR/AD.Crysis.ubmec
eGambitUnsafe.AI_Score_60%
AegisLabTrojan.Win32.Generic.4!c
GDataGen:Variant.Ransom.Ryuk.5
AhnLab-V3Malware/Win32.Generic.C2573177
Acronissuspicious
McAfeeArtemis!0CFB2D4D5448
MAXmalware (ai score=80)
RisingTrojan.GenKryptik!8.AA55 (CLOUD)
YandexTrojan.GenKryptik!aDTnvawlg+Y
IkarusTrojan-Ransom.GandCrab
FortinetW32/GenKryptik.CAQT!tr
PandaTrj/CI.A

How to remove Win32/GenKryptik.CASI ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
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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 Win32/GenKryptik.CASI 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 Win32/GenKryptik.CASI 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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