Win32/Kryptik.GHVN

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

What is Win32/Kryptik.GHVN infection?

In this post you will certainly find concerning the interpretation of Win32/Kryptik.GHVN and its negative effect on your computer. Such ransomware are a kind of malware that is elaborated by on-line scams to require paying the ransom by a sufferer.

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In the majority of the situations, Win32/Kryptik.GHVN infection will advise its sufferers to start funds transfer for the function of counteracting the changes that the Trojan infection has actually introduced to the target’s tool.

Win32/Kryptik.GHVN 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.
  • 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.
  • A process attempted to delay the analysis task.;
  • 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;
  • 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!
  • 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
  • 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 papers located on the sufferer’s disk drive — so the sufferer can no longer use the data;
  • Preventing regular access 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.xyzTrojan.Ransom.GandCrab.Gen.2
a.tomx.xyzTrojan.Ransom.GandCrab.Gen.2
ipv4bot.whatismyipaddress.comTrojan.Ransom.GandCrab.Gen.2
ns1.wowservers.ruTrojan.Ransom.GandCrab.Gen.2
carder.bitTrojan.Ransom.GandCrab.Gen.2
ns2.wowservers.ruTrojan.Ransom.GandCrab.Gen.2
ransomware.bitTrojan.Ransom.GandCrab.Gen.2

Win32/Kryptik.GHVN

The most common networks whereby Win32/Kryptik.GHVN are infused are:

  • By ways of phishing e-mails;
  • As a consequence of customer ending up on a resource that holds a harmful software;

As soon as the Trojan is efficiently infused, it will certainly either cipher the data on the target’s computer or stop the tool from functioning in a proper manner – while likewise putting a ransom note that mentions the demand for the sufferers to effect the payment for the purpose of decrypting the files or bring back the documents system back to the preliminary condition. In a lot of circumstances, the ransom money note will show up when the customer restarts the COMPUTER after the system has actually currently been damaged.

Win32/Kryptik.GHVN circulation networks.

In various edges of the world, Win32/Kryptik.GHVN expands by jumps as well as bounds. Nonetheless, the ransom money notes and tricks of extorting the ransom amount might differ depending upon certain regional (local) setups. The ransom money notes and methods of extorting the ransom quantity may vary depending on certain local (regional) settings.

Ransomware injection

For example:

    Faulty notifies regarding unlicensed software application.

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

    Faulty declarations regarding prohibited content.

    In countries where software program piracy is less popular, this method is not as efficient for the cyber fraudulences. Additionally, the Win32/Kryptik.GHVN popup alert may falsely assert to be stemming from a law enforcement establishment as well as will certainly report having located youngster porn or various other unlawful information on the tool.

    Win32/Kryptik.GHVN popup alert might incorrectly declare to be acquiring from a legislation enforcement organization as well as will report having situated child porn or various other prohibited data on the tool. The alert will similarly have a requirement for the user to pay the ransom money.

Technical details

File Info:

crc32: CAFA074B
md5: f94276c3c4ae03bd05cc901da4f9c63f
name: F94276C3C4AE03BD05CC901DA4F9C63F.mlw
sha1: 457079d4d7b57cddf3209d23c03ff5c382d0c7c6
sha256: 4da6c5af9cbb617ec946a32de456e1e71dad389756ecc48b6d71c555e72a615c
sha512: 89c8b00307839c5778321e2c44b80bcf485a8f84a98e03993a420602680170ec068b849d1b8f68b22effa9c0b34be3e910f1d81475cb14855ac8feb3a574a31a
ssdeep: 3072:ps16okCIPLdtxcIXlI2aKgoJTPBNFX395txyI+HzQ2R4bSygXMysEr7kKAxyHkwK:+16dCIPGOdgoJlH3jr2O+FJQvqk/
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.GHVN also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
MicroWorld-eScanTrojan.Ransom.GandCrab.Gen.2
FireEyeGeneric.mg.f94276c3c4ae03bd
CAT-QuickHealTrojan.Chapak.ZZ5
Qihoo-360Win32/Trojan.Ransom.9f7
McAfeeGenericRXFV-NI!F94276C3C4AE
CylanceUnsafe
VIPRETrojan.Win32.Generic!BT
SangforWin.Packed.Gandcrab-6552923-4
K7AntiVirusTrojan ( 0053305e1 )
BitDefenderTrojan.Ransom.GandCrab.Gen.2
K7GWTrojan ( 00534bbf1 )
Cybereasonmalicious.3c4ae0
CyrenW32/S-f4f19e09!Eldorado
SymantecPacked.Generic.525
APEXMalicious
AvastWin32:RansomX-gen [Ransom]
ClamAVWin.Packed.Gandcrab-6552923-4
KasperskyHEUR:Trojan.Win32.Generic
AlibabaRansom:Win32/GrandCrab.0d2197e6
NANO-AntivirusTrojan.Win32.GandCrypt.feethx
ViRobotTrojan.Win32.GandCrab.Gen.A
RisingTrojan.Kryptik!8.8 (CLOUD)
Ad-AwareTrojan.Ransom.GandCrab.Gen.2
EmsisoftTrojan.Ransom.GandCrab.Gen.2 (B)
ComodoTrojWare.Win32.Cloxer.GFS@7pembf
F-SecureHeuristic.HEUR/AGEN.1121531
DrWebTrojan.PWS.Stealer.23807
ZillyaBackdoor.Mokes.Win32.1243
TrendMicroRansom.Win32.GANDCRAB.SMLA.hp
McAfee-GW-EditionBehavesLike.Win32.Generic.dc
SophosMal/Generic-R + Mal/Agent-AUL
SentinelOneStatic AI – Malicious PE
JiangminTrojan.Chapak.kl
AviraHEUR/AGEN.1121531
MAXmalware (ai score=100)
Antiy-AVLTrojan[Ransom]/Win32.GandCrypt
MicrosoftRansom:Win32/Gandcrab.SF!MTB
ArcabitTrojan.Ransom.GandCrab.Gen.2
ZoneAlarmHEUR:Trojan.Win32.Generic
GDataTrojan.Ransom.GandCrab.Gen.2
CynetMalicious (score: 100)
AhnLab-V3Win-Trojan/Gandcrab.Exp
Acronissuspicious
BitDefenderThetaGen:NN.ZexaF.34590.ruX@a4WJnflO
ALYacTrojan.Ransom.GandCrab.Gen.2
TACHYONRansom/W32.GandCrab
VBA32BScope.TrojanRansom.GandCrypt
MalwarebytesTrojan.MalPack
PandaTrj/Genetic.gen
ESET-NOD32a variant of Win32/Kryptik.GHVN
TrendMicro-HouseCallRansom.Win32.GANDCRAB.SMLA.hp
TencentMalware.Win32.Gencirc.10b19e60
YandexTrojan.GandCrypt!eK3kUWe2/a4
IkarusTrojan.Win32.Gandcrab
FortinetW32/GandCrab.B!tr
AVGWin32:RansomX-gen [Ransom]
Paloaltogeneric.ml
CrowdStrikewin/malicious_confidence_100% (D)
MaxSecureRansomeware.CRAB.gen

How to remove Win32/Kryptik.GHVN 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.GHVN 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.GHVN 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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