Win32/Kryptik.GHDU

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

What is Win32/Kryptik.GHDU infection?

In this post you will certainly locate about the meaning of Win32/Kryptik.GHDU and also its adverse influence on your computer. Such ransomware are a kind of malware that is specified by on the internet scams to require paying the ransom money by a target.

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Most of the situations, Win32/Kryptik.GHDU virus will certainly instruct its targets to initiate funds move for the purpose of counteracting the amendments that the Trojan infection has presented to the victim’s gadget.

Win32/Kryptik.GHDU 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.
  • 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;
  • Unconventionial language used in binary resources: Spanish (Guatemala);
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • 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 records located on the victim’s hard disk — so the victim can no more utilize the data;
  • Preventing routine access to the sufferer’s workstation;
Similar behavior
Related domains
ipv4bot.whatismyipaddress.comTrojan.Ransom.GandCrab.Gen.2

Win32/Kryptik.GHDU

The most common channels whereby Win32/Kryptik.GHDU are injected are:

  • By ways of phishing emails;
  • As an effect of customer ending up on a resource that organizes a malicious software;

As soon as the Trojan is effectively infused, it will certainly either cipher the data on the victim’s PC or protect against the device from operating in a correct fashion – while also positioning a ransom note that points out the requirement for the targets to effect the payment for the purpose of decrypting the files or recovering the data system back to the initial condition. In the majority of circumstances, the ransom money note will certainly show up when the customer reboots the COMPUTER after the system has actually currently been harmed.

Win32/Kryptik.GHDU distribution networks.

In different edges of the world, Win32/Kryptik.GHDU expands by jumps as well as bounds. Nevertheless, the ransom money notes and methods of extorting the ransom quantity may differ relying on particular local (local) setups. The ransom money notes as well as techniques of obtaining the ransom amount might differ depending on specific regional (regional) setups.

Ransomware injection

As an example:

    Faulty notifies about unlicensed software.

    In specific areas, the Trojans frequently wrongfully report having actually found some unlicensed applications enabled on the victim’s tool. The alert then requires the individual to pay the ransom money.

    Faulty statements regarding unlawful web content.

    In countries where software program piracy is less preferred, this approach is not as reliable for the cyber scams. Additionally, the Win32/Kryptik.GHDU popup alert might wrongly assert to be stemming from a law enforcement organization and also will report having located youngster porn or other illegal data on the tool.

    Win32/Kryptik.GHDU popup alert might falsely claim to be obtaining from a regulation enforcement establishment and will report having situated child pornography or various other unlawful information on the device. The alert will in a similar way contain a need for the user to pay the ransom money.

Technical details

File Info:

crc32: 6DBCC97B
md5: 6295dcb97354b83ffcd10fdb5e41299b
name: 6295DCB97354B83FFCD10FDB5E41299B.mlw
sha1: 26caed8e1b9d2ff2d8bd5ff4e36929d8ef9c0e79
sha256: 4e37ad13b3f423f39b89d80e4751b85bc81650e5ec10971a2f35696f8719b439
sha512: 2615c4d2de7a0be275459976494df95602939ecad8281139749035388912d05a080823f12182131e81ab93a570a24847f0812297d46bcbad8807ddf18f69071c
ssdeep: 6144:vcfey24Bobb7nMM+kLKrQ3qLu8fAUy1jwnXqd:vVyzWbrMM+kL0QRWXqd
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.GHDU also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
MicroWorld-eScanTrojan.Ransom.GandCrab.Gen.2
CAT-QuickHealTrojan.Chapak.ZZ5
ALYacTrojan.Ransom.GandCrab.Gen.2
CylanceUnsafe
VIPRETrojan.Win32.Generic!BT
SangforTrojan.Win32.Save.a
K7AntiVirusTrojan ( 0053305e1 )
BitDefenderTrojan.Ransom.GandCrab.Gen.2
K7GWTrojan ( 0053305e1 )
Cybereasonmalicious.97354b
CyrenW32/S-83844bc2!Eldorado
SymantecPacked.Generic.525
APEXMalicious
AvastFileRepMalware
ClamAVWin.Malware.Gandcrab-6898229-0
KasperskyHEUR:Trojan.Win32.Generic
AlibabaTrojan:Win32/GandCrab.32f3a109
NANO-AntivirusTrojan.Win32.GenKryptik.fctaqd
ViRobotTrojan.Win32.GandCrab.Gen.A
RisingSpyware.SpyEyes!8.4AA (TFE:dGZlOgUMGtKKNRmA8Q)
Ad-AwareTrojan.Ransom.GandCrab.Gen.2
SophosMal/Generic-R + Mal/Agent-AUL
ComodoTrojWare.Win32.Cloxer.AY@7o68fu
F-SecureHeuristic.HEUR/AGEN.1103299
DrWebTrojan.Siggen7.54441
ZillyaTrojan.Ransom.Win32.952
TrendMicroRansom.Win32.GANDCRAB.SMLA.hp
McAfee-GW-EditionBehavesLike.Win32.Generic.dc
MaxSecureRansomeware.CRAB.gen
FireEyeGeneric.mg.6295dcb97354b83f
EmsisoftTrojan.Ransom.GandCrab.Gen.2 (B)
IkarusTrojan.Crypt
AviraHEUR/AGEN.1103299
Antiy-AVLTrojan[Spy]/Win32.SpyEyes
MicrosoftTrojan:Win32/GandCrab.KDS!MTB
ArcabitTrojan.Ransom.GandCrab.Gen.2
SUPERAntiSpywareTrojan.Agent/Gen-RansomGandCrab
ZoneAlarmHEUR:Trojan.Win32.Generic
GDataTrojan.Ransom.GandCrab.Gen.2
CynetMalicious (score: 100)
AhnLab-V3Win-Trojan/Gandcrab02.Exp
Acronissuspicious
McAfeeTrojan-FPOH!6295DCB97354
MAXmalware (ai score=99)
VBA32Malware-Cryptor.Limpopo
MalwarebytesGandcrab.Ransom.Encrypt.DDS
PandaTrj/Genetic.gen
ESET-NOD32a variant of Win32/Kryptik.GHDU
TrendMicro-HouseCallRansom.Win32.GANDCRAB.SMLA.hp
TencentMalware.Win32.Gencirc.10b1e385
YandexTrojan.GenAsa!zhAjthrXx0I
SentinelOneStatic AI – Malicious PE
eGambitUnsafe.AI_Score_99%
FortinetW32/GenKryptik.CPYR!tr
BitDefenderThetaGen:NN.ZexaF.34590.pyX@a4aGbH3
AVGFileRepMalware
Paloaltogeneric.ml
CrowdStrikewin/malicious_confidence_100% (D)
Qihoo-360Win32/Trojan.Ransom.0ed

How to remove Win32/Kryptik.GHDU virus?

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.GHDU 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.GHDU 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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