Win32/Kryptik.GFYA

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

What is Win32/Kryptik.GFYA infection?

In this post you will certainly discover concerning the definition of Win32/Kryptik.GFYA as well as its unfavorable impact on your computer. Such ransomware are a type of malware that is elaborated by online frauds to demand paying the ransom money by a target.

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In the majority of the instances, Win32/Kryptik.GFYA virus will certainly instruct its targets to launch funds transfer for the purpose of counteracting the amendments that the Trojan infection has actually presented to the target’s device.

Win32/Kryptik.GFYA Summary

These modifications 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.
  • 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;
  • 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 records found on the victim’s hard disk drive — so the victim can no longer make use of the information;
  • Preventing routine 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
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.GFYA

One of the most typical networks where Win32/Kryptik.GFYA Ransomware Trojans are infused are:

  • By methods of phishing emails;
  • As a repercussion of user ending up on a source that organizes a destructive software program;

As soon as the Trojan is effectively injected, it will certainly either cipher the information on the target’s PC or prevent the tool from operating in an appropriate manner – while likewise positioning a ransom note that points out the demand for the sufferers to impact the settlement for the function of decrypting the records or recovering the data system back to the first problem. In the majority of instances, the ransom note will turn up when the customer reboots the PC after the system has already been damaged.

Win32/Kryptik.GFYA distribution networks.

In different corners of the world, Win32/Kryptik.GFYA grows by leaps and also bounds. Nonetheless, the ransom notes and also techniques of extorting the ransom amount may vary depending upon specific regional (local) settings. The ransom money notes as well as tricks of obtaining the ransom money quantity may differ depending on specific regional (regional) settings.

Ransomware injection

For example:

    Faulty signals regarding unlicensed software.

    In particular locations, the Trojans typically wrongfully report having actually found some unlicensed applications allowed on the sufferer’s gadget. The alert after that requires the individual to pay the ransom money.

    Faulty declarations concerning illegal content.

    In nations where software program piracy is less popular, this approach is not as efficient for the cyber scams. Conversely, the Win32/Kryptik.GFYA popup alert might wrongly claim to be deriving from a law enforcement establishment as well as will certainly report having situated child porn or other prohibited information on the gadget.

    Win32/Kryptik.GFYA popup alert may incorrectly assert to be acquiring from a law enforcement establishment and also will report having located kid pornography or various other unlawful data on the device. The alert will similarly include a need for the individual to pay the ransom.

Technical details

File Info:

crc32: 5E6D6579
md5: de1bce6990e04f1b7a4c0b61979c7d25
name: DE1BCE6990E04F1B7A4C0B61979C7D25.mlw
sha1: a486bfdf02a6d9bd9dbc493e74e8b74736ca613b
sha256: 4e671d4fb28c75c394c6abd2061828bc09c2db31effaf2e8afa11617f7fc017c
sha512: efa4e303395a905d3c4d3a1ee30b5c4c2030b337f01a2de474c34d7ee4a87891a6614e9ce10e3500a61fc43ff590fb30c40e5e99bf789a747ba7d580df71c1d9
ssdeep: 6144:N+i525Lew/LeksLqR1x/jiV6WdU5sPLOBM2XHK1qFH:Qi50TyksWrxi3LYX7H
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.GFYA also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
MicroWorld-eScanTrojan.Ransom.GandCrab.Gen.2
FireEyeGeneric.mg.de1bce6990e04f1b
CAT-QuickHealTrojan.Chapak.ZZ6
ALYacTrojan.Ransom.GandCrab.Gen.2
CylanceUnsafe
VIPRETrojan.Win32.Generic!BT
SangforWin.Packed.Gandcrab-6552923-4
K7AntiVirusTrojan ( 003e58dd1 )
BitDefenderTrojan.Ransom.GandCrab.Gen.2
K7GWTrojan ( 003e58dd1 )
CrowdStrikewin/malicious_confidence_100% (D)
CyrenW32/S-8d75423b!Eldorado
SymantecPacked.Generic.525
APEXMalicious
AvastWin32:Malware-gen
ClamAVWin.Packed.Gandcrab-6552923-4
KasperskyHEUR:Trojan.Win32.Generic
NANO-AntivirusTrojan.Win32.Chapak.fanmtc
ViRobotTrojan.Win32.GandCrab.Gen.A
RisingMalware.Strealer!8.1EF (CLOUD)
Ad-AwareTrojan.Ransom.GandCrab.Gen.2
EmsisoftTrojan.Ransom.GandCrab.Gen.2 (B)
ComodoTrojWare.Win32.Chapak.GF@7mc1zz
F-SecureHeuristic.HEUR/AGEN.1102756
DrWebTrojan.Encoder.24384
ZillyaTrojan.Coins.Win32.22
TrendMicroRansom_GANDCRAB.SMJS2
McAfee-GW-EditionBehavesLike.Win32.Generic.fc
SophosMal/Generic-R + Mal/Agent-AUL
IkarusTrojan-Ransom.GandCrab
JiangminTrojan.Banker.NeutrinoPOS.dx
AviraHEUR/AGEN.1102756
Antiy-AVLTrojan[Banker]/Win32.NeutrinoPOS
MicrosoftRansom:Win32/GandCrab!rfn
ArcabitTrojan.Ransom.GandCrab.Gen.2
ZoneAlarmHEUR:Trojan.Win32.Generic
GDataTrojan.Ransom.GandCrab.Gen.2
CynetMalicious (score: 100)
AhnLab-V3Win-Trojan/Gandcrab.Exp
Acronissuspicious
McAfeeGenericRXEZ-SJ!DE1BCE6990E0
MAXmalware (ai score=100)
VBA32BScope.Trojan.Chapak
MalwarebytesTrojan.MalPack.GS
PandaTrj/Genetic.gen
ESET-NOD32a variant of Win32/Kryptik.GFYA
TrendMicro-HouseCallRansom_GANDCRAB.SMJS2
TencentMalware.Win32.Gencirc.10b25da4
YandexTrojan.PWS.Coins!4qCge6youto
SentinelOneStatic AI – Malicious PE
MaxSecureTrojan.Malware.300983.susgen
FortinetW32/Agent.BFJ!tr
BitDefenderThetaGen:NN.ZexaF.34590.suX@a4hclgg
AVGWin32:Malware-gen
Paloaltogeneric.ml
Qihoo-360Win32/Trojan.94d

How to remove Win32/Kryptik.GFYA 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.GFYA 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.GFYA 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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