Win32/Kryptik.GMTH

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

What is Win32/Kryptik.GMTH infection?

In this post you will certainly discover concerning the meaning of Win32/Kryptik.GMTH and its adverse effect on your computer system. Such ransomware are a kind of malware that is clarified by on the internet fraudulences to require paying the ransom by a victim.

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Most of the cases, Win32/Kryptik.GMTH ransomware will advise its victims to launch funds transfer for the function of counteracting the changes that the Trojan infection has actually introduced to the sufferer’s tool.

Win32/Kryptik.GMTH Summary

These adjustments 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.
  • Presents an Authenticode digital signature;
  • 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.

  • 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
  • Collects information about installed applications;
  • 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 papers found on the target’s hard drive — so the target can no more utilize the information;
  • Preventing regular accessibility to the target’s workstation;

Win32/Kryptik.GMTH

One of the most typical channels whereby Win32/Kryptik.GMTH 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 an effect of customer ending up on a resource that hosts a harmful software application;

As soon as the Trojan is successfully infused, it will either cipher the data on the sufferer’s computer or prevent the device from operating in an appropriate fashion – while also placing a ransom note that points out the need for the targets to effect the settlement for the objective of decrypting the files or restoring the file system back to the initial condition. In a lot of circumstances, the ransom note will certainly show up when the client restarts the PC after the system has currently been harmed.

Win32/Kryptik.GMTH distribution networks.

In numerous edges of the world, Win32/Kryptik.GMTH grows by leaps as well as bounds. However, the ransom notes and techniques of extorting the ransom amount might vary depending upon specific local (local) settings. The ransom notes and also techniques of obtaining the ransom money amount might differ depending on certain regional (local) settings.

Ransomware injection

As an example:

    Faulty notifies about unlicensed software application.

    In particular locations, the Trojans commonly wrongfully report having actually detected some unlicensed applications enabled on the sufferer’s tool. The alert then requires the customer to pay the ransom money.

    Faulty statements concerning prohibited content.

    In countries where software piracy is much less prominent, this technique is not as efficient for the cyber scams. Additionally, the Win32/Kryptik.GMTH popup alert might falsely declare to be deriving from a law enforcement organization as well as will certainly report having located child pornography or other unlawful information on the gadget.

    Win32/Kryptik.GMTH popup alert may wrongly claim to be deriving from a law enforcement organization and also will certainly report having situated youngster porn or other prohibited data on the gadget. The alert will similarly include a need for the user to pay the ransom.

Technical details

File Info:

crc32: C162083D
md5: f6075ddceefdb6589c8ea99ad0a85daa
name: F6075DDCEEFDB6589C8EA99AD0A85DAA.mlw
sha1: a6ea2e7e2d9abc2322be2da2c1da1a711d98b9e0
sha256: 7a19bff555c95a92a5cdfb8e2eda6f078a43349a5d6dfc664226cf38ef5b9418
sha512: 625c28b7f8d80b9d737a5802fbe66a3446a18b794638fdeed9893e3857a9255afed82d79be8313a5d50a61841bc389f877763e721b71998c84380c9bda1a650c
ssdeep: 24576:lSyLtIBYWFkfV0hfPnZBdWGktI7ie8ydTF4EWCe:RKBlNfPjd1ktOie8y1Fze
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright xa9 1997-2017 Simon Tatham.
InternalName: PSCP
FileVersion: Release 0.68
CompanyName: Simon Tatham
ProductName: PuTTY suite
ProductVersion: Release 0.68
FileDescription: Command-line SCP/SFTP client
OriginalFilename: PSCP
Translation: 0x0809 0x04b0

Win32/Kryptik.GMTH also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
MicroWorld-eScanTrojan.Mint.Zamg.O
FireEyeGeneric.mg.f6075ddceefdb658
McAfeeRansomware-GNS!F6075DDCEEFD
CylanceUnsafe
VIPRETrojan.Win32.Generic!BT
SangforTrojan.Win32.Save.a
K7AntiVirusTrojan ( 005411601 )
BitDefenderTrojan.Mint.Zamg.O
K7GWTrojan ( 005411601 )
Cybereasonmalicious.ceefdb
CyrenW32/Ransom.KS.gen!Eldorado
SymantecRansom.Troldesh
APEXMalicious
AvastWin32:Malware-gen
KasperskyHEUR:Trojan.Win32.Generic
AlibabaTrojan:Win32/Emotet.9a27d3da
NANO-AntivirusTrojan.Win32.Encoder.fkcusw
AegisLabTrojan.Win32.Generic.4!c
RisingRansom.Troldesh!8.5D1 (CLOUD)
Ad-AwareTrojan.Mint.Zamg.O
EmsisoftTrojan.Mint.Zamg.O (B)
ComodoTrojWare.Win32.TrojanProxy.Bunitu.GL@7xwiw9
F-SecureTrojan.TR/Crypt.Epack.884889
DrWebTrojan.Encoder.26677
ZillyaTrojan.Shade.Win32.855
TrendMicroRansom_SHADE.THAAADAH
McAfee-GW-EditionRansomware-GNS!F6075DDCEEFD
SophosMal/Generic-R + Troj/Troldesh-O
IkarusTrojan-Ransom.Shade
AviraTR/Crypt.Epack.884889
Antiy-AVLTrojan[Ransom]/Win32.Shade
MicrosoftTrojan:Win32/Emotet.PB
ArcabitTrojan.Mint.Zamg.O
AhnLab-V3Trojan/Win32.Kryptik.C2834160
ZoneAlarmHEUR:Trojan.Win32.Generic
GDataTrojan.Mint.Zamg.O
CynetMalicious (score: 100)
ESET-NOD32a variant of Win32/Kryptik.GMTH
Acronissuspicious
BitDefenderThetaGen:NN.ZexaF.34608.sr1@aOxqbyci
ALYacTrojan.Ransom.Shade
VBA32BScope.TrojanSpy.Zbot
MalwarebytesGeneric.Malware/Suspicious
PandaTrj/GdSda.A
TrendMicro-HouseCallRansom_SHADE.THAAADAH
TencentMalware.Win32.Gencirc.114d6292
YandexTrojan.Shade!7znNbqa+4mc
SentinelOneStatic AI – Malicious PE
eGambitPE.Heur.InvalidSig
FortinetW32/GandCrab.D!tr.ransom
AVGWin32:Malware-gen
Paloaltogeneric.ml
CrowdStrikewin/malicious_confidence_100% (D)
Qihoo-360Win32/Backdoor.Emotet.HgIASOgA

How to remove Win32/Kryptik.GMTH 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/Kryptik.GMTH 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/Kryptik.GMTH 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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