Win32/Kryptik.GCRV

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

What is Win32/Kryptik.GCRV infection?

In this post you will certainly locate about the interpretation of Win32/Kryptik.GCRV and its adverse impact on your computer system. Such ransomware are a form of malware that is specified by online frauds to require paying the ransom by a target.

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Most of the situations, Win32/Kryptik.GCRV infection will certainly advise its sufferers to start funds move for the purpose of neutralizing the amendments that the Trojan infection has actually introduced to the victim’s gadget.

Win32/Kryptik.GCRV Summary

These alterations can be as adheres to:

  • 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.
  • Starts servers listening on 0.0.0.0:5109, 0.0.0.0:45350;
  • A process created a hidden window;
  • 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;
  • A process attempted to delay the analysis task by a long amount of time.;
  • Attempts to repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
  • Attempts to identify installed AV products by registry key;
  • Ciphering the files situated on the victim’s disk drive — so the target can no longer make use of the data;
  • Preventing regular accessibility to the target’s workstation;

Win32/Kryptik.GCRV

One of the most normal networks through which Win32/Kryptik.GCRV Ransomware are injected are:

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

As soon as the Trojan is successfully infused, it will certainly either cipher the information on the target’s PC or prevent the device from functioning in a correct way – while likewise positioning a ransom note that mentions the demand for the victims to impact the repayment for the purpose of decrypting the papers or restoring the documents system back to the first problem. In a lot of instances, the ransom money note will certainly come up when the customer reboots the COMPUTER after the system has already been damaged.

Win32/Kryptik.GCRV circulation channels.

In different edges of the globe, Win32/Kryptik.GCRV expands by leaps as well as bounds. However, the ransom notes and techniques of obtaining the ransom quantity may vary depending upon specific regional (regional) setups. The ransom money notes as well as techniques of extorting the ransom money amount may vary depending on certain neighborhood (local) setups.

Ransomware injection

As an example:

    Faulty alerts about unlicensed software application.

    In particular areas, the Trojans commonly wrongfully report having actually found some unlicensed applications made it possible for on the victim’s gadget. The sharp then requires the individual to pay the ransom.

    Faulty declarations regarding prohibited material.

    In countries where software application piracy is much less preferred, this approach is not as effective for the cyber scams. Alternatively, the Win32/Kryptik.GCRV popup alert might incorrectly declare to be deriving from a police establishment and will certainly report having situated child pornography or various other illegal data on the gadget.

    Win32/Kryptik.GCRV popup alert may wrongly assert to be acquiring from a legislation enforcement establishment and will report having located child pornography or other unlawful information on the device. The alert will likewise have a demand for the user to pay the ransom.

Technical details

File Info:

crc32: A5D1602A
md5: 781a2fbf1ce42ba57c5a4d1680ba8771
name: 781A2FBF1CE42BA57C5A4D1680BA8771.mlw
sha1: 047852c12ecc0c4ac0125637aa168f88f4c0d5d6
sha256: 7b126592e8e4c023e000b7b673987ab304eb035ecfd4ba8d7fa5deceb49386f9
sha512: 5311ad6cdda6e0bdc86ca58b356962db35d151c415a48d99f95d85de0bf6dd574191e16c7ba5924e06d96cfacddbcb4dd569839e3527bf856eff0d52d9c13fa7
ssdeep: 3072:FHtMsWT1tBtAP/B/YNwG1j/wWWNHSh4H+Sz:FHvYj0/BhGCWWNq
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.GCRV also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusTrojan ( 0053305e1 )
Elasticmalicious (high confidence)
DrWebTrojan.Encoder.24461
CynetMalicious (score: 100)
CAT-QuickHealTrojan.Mauvaise.SL1
ALYacTrojan.BRMon.Gen.3
CylanceUnsafe
ZillyaTrojan.Generic.Win32.345903
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (D)
AlibabaTrojan:Win32/Bunitu.ali1000105
K7GWTrojan ( 0053305e1 )
Cybereasonmalicious.f1ce42
CyrenW32/S-dea5fd14!Eldorado
SymantecPacked.Generic.525
ESET-NOD32a variant of Win32/Kryptik.GCRV
APEXMalicious
AvastWin32:Malware-gen
KasperskyHEUR:Trojan.Win32.Generic
BitDefenderTrojan.BRMon.Gen.3
NANO-AntivirusTrojan.Win32.NeutrinoPOS.exonsn
MicroWorld-eScanTrojan.BRMon.Gen.3
TencentMalware.Win32.Gencirc.114ce5ee
Ad-AwareTrojan.BRMon.Gen.3
SophosMal/Generic-R + Mal/Kryptik-BN
ComodoApplication.Win32.IStartSurf.PS@8c4m91
BitDefenderThetaGen:NN.ZexaF.34608.luW@aKtHZ9k
VIPRETrojan.Win32.Generic!BT
TrendMicroRansom_HPGANDCRAB.SMONT
McAfee-GW-EditionBehavesLike.Win32.Generic.ch
FireEyeGeneric.mg.781a2fbf1ce42ba5
EmsisoftTrojan.BRMon.Gen.3 (B)
SentinelOneStatic AI – Suspicious PE
AviraHEUR/AGEN.1126869
MicrosoftTrojan:Win32/Gandcrab.GM!MTB
ArcabitTrojan.BRMon.Gen.3
AegisLabTrojan.Win32.Generic.4!c
GDataWin32.Trojan-Ransom.GandCrab.N
AhnLab-V3Trojan/Win.MalPe.X2055
Acronissuspicious
McAfeePacked-ZG!781A2FBF1CE4
MAXmalware (ai score=99)
VBA32Trojan.Encoder
MalwarebytesTrojan.Bunitu
PandaTrj/Genetic.gen
TrendMicro-HouseCallRansom_HPGANDCRAB.SMONT
RisingRansom.GandCrypt!8.F33E (CLOUD)
YandexTrojan.PWS.NeutrinoPOS!k9c+VZvraH8
IkarusTrojan.Crypt
FortinetW32/GenKryptik.BAZY!tr
AVGWin32:Malware-gen
Paloaltogeneric.ml
Qihoo-360Win32/Trojan.Generic.HwoCUFcA

How to remove Win32/Kryptik.GCRV 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.GCRV 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.GCRV 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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