Win32/Kryptik.GFSG

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

What is Win32/Kryptik.GFSG infection?

In this short article you will find concerning the meaning of Win32/Kryptik.GFSG and also its negative impact on your computer. Such ransomware are a form of malware that is clarified by on the internet fraudulences to demand paying the ransom by a victim.

GridinSoft Anti-Malware Review
It is better to prevent, than repair and repent!
When we talk about the intrusion of unfamiliar programs into your computer’s work, the proverb “Forewarned is forearmed” describes the situation as accurately as possible. Gridinsoft Anti-Malware is exactly the tool that is always useful to have in your armory: fast, efficient, up-to-date. It is appropriate to use it as an emergency help at the slightest suspicion of infection.
Gridinsoft Anti-Malware 6-day trial available.
EULA | Privacy Policy | 10% Off Coupon
Subscribe to our Telegram channel to be the first to know about news and our exclusive materials on information security.

Most of the cases, Win32/Kryptik.GFSG infection will certainly instruct its sufferers to start funds move for the function of neutralizing the amendments that the Trojan infection has presented to the victim’s device.

Win32/Kryptik.GFSG 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.
  • 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.

  • 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.
  • Uses Windows utilities for basic functionality;
  • 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
  • Attempts to identify installed AV products by installation directory;
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Creates a slightly modified copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers situated on the target’s hard disk — so the victim can no more make use of the data;
  • Preventing normal accessibility to the target’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
ipv4bot.whatismyipaddress.comTrojan.Ransom.GandCrab.Gen.2
ns1.corp-servers.ruTrojan.Ransom.GandCrab.Gen.2
zonealarm.bitTrojan.Ransom.GandCrab.Gen.2
ns2.corp-servers.ruTrojan.Ransom.GandCrab.Gen.2
ransomware.bitTrojan.Ransom.GandCrab.Gen.2

Win32/Kryptik.GFSG

One of the most typical channels whereby Win32/Kryptik.GFSG Trojans are infused are:

  • By means of phishing e-mails;
  • As a repercussion of individual winding up on a resource that organizes a malicious software;

As soon as the Trojan is effectively injected, it will either cipher the information on the victim’s PC or stop the device from working in a correct way – while additionally placing a ransom note that discusses the demand for the targets to effect the repayment for the function of decrypting the documents or recovering the documents system back to the initial condition. In the majority of instances, the ransom note will certainly come up when the customer reboots the COMPUTER after the system has already been harmed.

Win32/Kryptik.GFSG distribution channels.

In various corners of the globe, Win32/Kryptik.GFSG grows by leaps and bounds. Nonetheless, the ransom money notes as well as methods of extorting the ransom quantity may differ relying on specific regional (regional) settings. The ransom money notes and also techniques of obtaining the ransom quantity might vary depending on particular regional (regional) settings.

Ransomware injection

For example:

    Faulty alerts about unlicensed software.

    In certain areas, the Trojans frequently wrongfully report having discovered some unlicensed applications made it possible for on the victim’s device. The alert then requires the user to pay the ransom.

    Faulty declarations about prohibited material.

    In countries where software program piracy is much less preferred, this technique is not as reliable for the cyber scams. Additionally, the Win32/Kryptik.GFSG popup alert may falsely assert to be originating from a police establishment and also will certainly report having located kid porn or other prohibited information on the tool.

    Win32/Kryptik.GFSG popup alert may falsely declare to be obtaining from a regulation enforcement organization as well as will report having situated child pornography or other illegal data on the tool. The alert will similarly include a requirement for the individual to pay the ransom.

Technical details

File Info:

crc32: 6A148673
md5: a3ef50ff84b77f19001e9fdfc54fa2b7
name: A3EF50FF84B77F19001E9FDFC54FA2B7.mlw
sha1: 5841fb3855943cb48e1cd37da6e70f74da45287c
sha256: 4dece28682348396283641790e9ccec84d0f6859dd67a306082ee480df658aba
sha512: 46f2352c0154393b304ab7f4f192f7002c81556a33646fce46a9d718df6b26c0c95cee1db8d709e3bbbbd85c0c92ca5783bced8abd2805aabbca4a66427a4016
ssdeep: 3072:uWj7vnC4Ge3k01UUnVtuf3d8yKb2qr8lyzYzn9EsjAO:uWPCNel1UUnVtsdx0sPz9jV
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (C) 2017, gemperzeib
InternalName: toofirtyless.exe
FileVersion: 5.0.0.0
ProductVersion: 5.0.0.0
Translation: 0x0809 0x04b0

Win32/Kryptik.GFSG also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
MicroWorld-eScanTrojan.Ransom.GandCrab.Gen.2
FireEyeGeneric.mg.a3ef50ff84b77f19
CAT-QuickHealRansom.GandCrab.MUE.YY5
McAfeePacked-FCX!A3EF50FF84B7
CylanceUnsafe
ZillyaTrojan.Chapak.Win32.2997
SangforWin.Packed.Gandcrab-6552923-4
K7AntiVirusTrojan ( 00532e3d1 )
BitDefenderTrojan.Ransom.GandCrab.Gen.2
K7GWTrojan ( 655333331 )
Cybereasonmalicious.f84b77
CyrenW32/S-ede6bcbb!Eldorado
SymantecPacked.Generic.525
APEXMalicious
AvastWin32:Malware-gen
ClamAVWin.Packed.Gandcrab-6552923-4
KasperskyHEUR:Trojan-Ransom.Win32.GandCrypt.gen
NANO-AntivirusTrojan.Win32.Gozi.faiuat
ViRobotTrojan.Win32.GandCrab.Gen.A
AegisLabTrojan.Win32.GandCrypt.j!c
RisingTrojan.Kryptik!1.B1B5 (CLOUD)
Ad-AwareTrojan.Ransom.GandCrab.Gen.2
EmsisoftTrojan.Generic (A)
ComodoTrojWare.Win32.Ransom.GandCrab.BS@7m1cww
F-SecureHeuristic.HEUR/AGEN.1121545
DrWebTrojan.Encoder.24384
VIPRETrojan.Win32.Generic!BT
TrendMicroRansom.Win32.GANDCRAB.SMLA.hp
McAfee-GW-EditionBehavesLike.Win32.Generic.cc
SophosMal/Generic-R + Mal/Agent-AUL
IkarusTrojan-Ransom.GandCrab
JiangminTrojanDownloader.Upatre.ajbg
MaxSecureRansomeware.CRAB.gen
AviraHEUR/AGEN.1121545
MAXmalware (ai score=100)
Antiy-AVLTrojan/Win32.Chapak
MicrosoftRansom:Win32/GrandCrab.A
ArcabitTrojan.Ransom.GandCrab.Gen.2
ZoneAlarmHEUR:Trojan-Ransom.Win32.GandCrypt.gen
GDataTrojan.Ransom.GandCrab.Gen.2
CynetMalicious (score: 100)
AhnLab-V3Win-Trojan/Gandcrab.Exp
Acronissuspicious
BitDefenderThetaGen:NN.ZexaF.34590.ku1@aSphg7h
ALYacTrojan.Ransom.GandCrab.Gen.2
TACHYONRansom/W32.GandCrab
VBA32BScope.Trojan.Chapak
MalwarebytesTrojan.MalPack.Generic
PandaTrj/Genetic.gen
ESET-NOD32a variant of Win32/Kryptik.GFSG
TrendMicro-HouseCallRansom.Win32.GANDCRAB.SMLA.hp
TencentMalware.Win32.Gencirc.10b9d4a4
YandexTrojan.Chapak!k1+46pH2JSc
SentinelOneStatic AI – Malicious PE
eGambitUnsafe.AI_Score_98%
FortinetW32/Kryptik.HDRC!tr
AVGWin32:Malware-gen
Paloaltogeneric.ml
CrowdStrikewin/malicious_confidence_100% (D)
Qihoo-360Win32/Trojan.Ransom.a7e

How to remove Win32/Kryptik.GFSG 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 Win32/Kryptik.GFSG 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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Win32/Kryptik.GFSG you can always ask me in the comments for getting help.

Sending
User Review
0 (0 votes)
Comments Rating 0 (0 reviews)

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.

Leave a Reply

Sending