Win32/Kryptik.GMTJ

Written by Robert Bailey

What is Win32/Kryptik.GMTJ infection?

In this short article you will locate about the definition of Win32/Kryptik.GMTJ as well as its adverse effect on your computer system. Such ransomware are a kind of malware that is specified by on-line fraudulences to demand paying the ransom by a victim.

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Most of the cases, Win32/Kryptik.GMTJ ransomware will instruct its victims to launch funds transfer for the objective of counteracting the amendments that the Trojan infection has presented to the sufferer’s tool.

Win32/Kryptik.GMTJ 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.
  • 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.
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files located on the target’s hard drive — so the victim can no more make use of the information;
  • Preventing normal accessibility to the sufferer’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.
Similar behavior
Related domains
z.whorecord.xyz Trojan.Ransom.GandCrab
a.tomx.xyz Trojan.Ransom.GandCrab

Win32/Kryptik.GMTJ

The most regular networks whereby Win32/Kryptik.GMTJ are injected are:

  • By ways of phishing e-mails;
  • As a repercussion of user winding up on a source that holds a malicious software application;

As quickly as the Trojan is efficiently injected, it will certainly either cipher the data on the target’s PC or prevent the device from operating in an appropriate way – while likewise placing a ransom money note that mentions the need for the victims to impact the payment for the purpose of decrypting the papers or bring back the data system back to the preliminary problem. In many circumstances, the ransom note will certainly come up when the customer restarts the PC after the system has actually currently been damaged.

Win32/Kryptik.GMTJ circulation networks.

In numerous edges of the world, Win32/Kryptik.GMTJ expands by jumps as well as bounds. However, the ransom money notes as well as techniques of extorting the ransom money quantity may differ depending upon particular neighborhood (regional) setups. The ransom notes and also techniques of extorting the ransom quantity might vary depending on particular regional (regional) settings.

Ransomware injection

For example:

    Faulty notifies regarding unlicensed software application.

    In particular locations, the Trojans often wrongfully report having spotted some unlicensed applications made it possible for on the victim’s tool. The sharp after that demands the customer to pay the ransom.

    Faulty statements about unlawful content.

    In nations where software application piracy is less preferred, this technique is not as efficient for the cyber frauds. Alternatively, the Win32/Kryptik.GMTJ popup alert may incorrectly declare to be deriving from a police institution as well as will certainly report having situated child porn or various other illegal information on the gadget.

    Win32/Kryptik.GMTJ popup alert might wrongly assert to be deriving from a regulation enforcement institution as well as will report having situated kid pornography or other unlawful data on the tool. The alert will in a similar way contain a need for the user to pay the ransom.

Technical details

File Info:

crc32: 6CF8D645
md5: 4684f5dcb4dfd4fced4c06ef12ff8048
name: 4684F5DCB4DFD4FCED4C06EF12FF8048.mlw
sha1: 1f514ac5a5146c3363b2bbf330f51c548468ec9c
sha256: 6848bcacdbdf7a80437e6d219ebc26324498be356aeefe4819099dda5989972a
sha512: 8f29bc88f40bf3234f49747ba53f9347db36d0af6be221eeeb96a09e2e8cb260eb05a2aeea95180fc2889920af2678b42f7ffa0735d45fc81b47200218eaf1fb
ssdeep: 3072:PLXFV6hRngzNz+nj6r75rOvnL4baHTrdYtRCVeKBjBlkf8wlqr7nwLhO6kC2HVw:DFV0RnUzF5akG9rGUQqrhrvHV/l
type: PE32 executable (GUI) Intel 80386 system file, for MS Windows

Version Info:

FileVersion: 1.0.0.12
ProductVersion: 1.0.0.12
Translation: 0x0339 0x04b0

Win32/Kryptik.GMTJ also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
Cynet Malicious (score: 100)
CAT-QuickHeal Trojan.GenericPMF.S4357176
ALYac Trojan.Ransom.GandCrab
Cylance Unsafe
Zillya Trojan.Crypmod.Win32.694
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Ransom:Win32/Genasom.ali1000102
K7GW Trojan ( 005412a41 )
K7AntiVirus Trojan ( 005412a41 )
Cyren W32/Kryptik.NK.gen!Eldorado
Symantec Packed.Generic.525
ESET-NOD32 a variant of Win32/Kryptik.GMTJ
APEX Malicious
Avast Win32:MalwareX-gen [Trj]
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Trojan.Brsecmon.1
NANO-Antivirus Trojan.Win32.Crypmod.fkgpjp
ViRobot Trojan.Win32.R.Agent.279552.R
MicroWorld-eScan Trojan.Brsecmon.1
Tencent Win32.Trojan.Raas.Auto
Ad-Aware Trojan.Brsecmon.1
Sophos Mal/Generic-S + Mal/GandCrab-G
Comodo TrojWare.Win32.Ransom.Crypmod.AE@7xspg9
BitDefenderTheta Gen:NN.ZexaF.34688.rC0@a4HmZDfG
VIPRE Trojan.Win32.Generic!BT
TrendMicro Trojan.Win32.SODINOK.SM.hp
McAfee-GW-Edition BehavesLike.Win32.AdwareSEasy.dh
FireEye Generic.mg.4684f5dcb4dfd4fc
Emsisoft Trojan.Brsecmon.1 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan.Crypmod.kr
Avira HEUR/AGEN.1106537
Microsoft Trojan:Win32/Tiggre!rfn
AegisLab Trojan.Win32.Crypmod.4!c
GData Win32.Trojan-Ransom.GandCrab.U
AhnLab-V3 Trojan/Win.MalPe.X2055
Acronis suspicious
McAfee Trojan-FQIC!4684F5DCB4DF
MAX malware (ai score=100)
VBA32 BScope.Trojan.Vigorf
Malwarebytes Trojan.MalPack
Panda Trj/GdSda.A
TrendMicro-HouseCall Trojan.Win32.SODINOK.SM.hp
Rising Ransom.Crypmod!8.DA9 (CLOUD)
Yandex Trojan.GenAsa!+VIvQ/zR97A
Ikarus Trojan.Win32.Danabot
MaxSecure Ransomeware.GandCrypt.Gen
Fortinet W32/Kryptik.GMSM!tr
AVG Win32:MalwareX-gen [Trj]
Paloalto generic.ml

How to remove Win32/Kryptik.GMTJ 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

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.GMTJ 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.GMTJ 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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