Win32/Kryptik.GCHA

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

What is Win32/Kryptik.GCHA infection?

In this short article you will find concerning the interpretation of Win32/Kryptik.GCHA and also its unfavorable impact on your computer. Such ransomware are a kind of malware that is elaborated by on-line scams to require paying the ransom by a target.

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Most of the situations, Win32/Kryptik.GCHA ransomware will instruct its victims to initiate funds transfer for the function of neutralizing the changes that the Trojan infection has actually introduced to the victim’s gadget.

Win32/Kryptik.GCHA Summary

These alterations 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.
  • Unconventionial language used in binary resources: Czech;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • 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!
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files located on the sufferer’s hard disk — so the victim can no more utilize the information;
  • Preventing regular access to the victim’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.

Win32/Kryptik.GCHA

The most typical networks where Win32/Kryptik.GCHA are infused are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As a consequence of individual ending up on a resource that organizes a destructive software;

As quickly as the Trojan is efficiently infused, it will certainly either cipher the data on the sufferer’s PC or prevent the device from working in an appropriate way – while likewise putting a ransom money note that mentions the requirement for the sufferers to impact the settlement for the objective of decrypting the papers or bring back the documents system back to the first condition. In many instances, the ransom money note will come up when the client restarts the COMPUTER after the system has already been damaged.

Win32/Kryptik.GCHA distribution networks.

In numerous corners of the globe, Win32/Kryptik.GCHA grows by jumps and also bounds. Nevertheless, the ransom notes and methods of obtaining the ransom quantity might 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 (regional) settings.

Ransomware injection

As an example:

    Faulty alerts regarding unlicensed software.

    In particular areas, the Trojans commonly wrongfully report having found some unlicensed applications made it possible for on the sufferer’s gadget. The alert after that demands the customer to pay the ransom.

    Faulty statements concerning prohibited material.

    In countries where software application piracy is less popular, this method is not as efficient for the cyber fraudulences. Alternatively, the Win32/Kryptik.GCHA popup alert might wrongly claim to be originating from a police establishment as well as will report having situated child pornography or other unlawful data on the gadget.

    Win32/Kryptik.GCHA popup alert may wrongly declare to be deriving from a legislation enforcement organization as well as will certainly report having located child porn or various other illegal data on the device. The alert will likewise have a demand for the individual to pay the ransom money.

Technical details

File Info:

crc32: 0998CC71
md5: 824aa4f6f89ab706cb0694245baf4da3
name: 824AA4F6F89AB706CB0694245BAF4DA3.mlw
sha1: 25c4756bd1478d6ef330e8541da4ea1a0caa4538
sha256: 893417b261d439406ff904a5735e910a9b27b723a1314fbac78b5d46dadb8f56
sha512: c94cba3734f50e0a521a23b533b71d1929e9236a4f747e6293b03d7bc9aa976926c8fb8e74d110bed88365a263ed2b34497eb41d8007ce33609f461c6ccd7342
ssdeep: 12288:5QXqkEjg4xf3kGhIOH/sLBr378aCrPHRdEmMK:5oqkEjtPkGhbH/yrL8hPxdDMK
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.GCHA also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusTrojan ( 0053305e1 )
Elasticmalicious (high confidence)
DrWebTrojan.DownLoader26.10882
CynetMalicious (score: 100)
CAT-QuickHealTrojan.Chapak.ZZ5
ALYacTrojan.BRMon.Gen.1
CylanceUnsafe
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_70% (D)
K7GWTrojan ( 005734ab1 )
Cybereasonmalicious.6f89ab
SymantecPacked.Generic.525
ESET-NOD32a variant of Win32/Kryptik.GCHA
APEXMalicious
AvastWin32:Malware-gen
ClamAVWin.Trojan.Emotet-6473953-0
KasperskyTrojan.Win32.Chapak.dfgz
BitDefenderTrojan.BRMon.Gen.1
NANO-AntivirusTrojan.Win32.Kryptik.eywnsd
SUPERAntiSpywareTrojan.Agent/Gen-Kryptik
MicroWorld-eScanTrojan.BRMon.Gen.1
TencentWin32.Trojan.Chapak.Dxwk
Ad-AwareTrojan.BRMon.Gen.1
SophosMal/Generic-S + Mal/Ransom-FN
ComodoApplication.Win32.IStartSurf.PS@8c4m91
BitDefenderThetaGen:NN.ZexaF.34670.DyW@a8N1FHhG
VIPRETrojan.Win32.Generic!BT
TrendMicroRansom_HPGANDCRAB.SMG2
McAfee-GW-EditionBehavesLike.Win32.Generic.gc
FireEyeGeneric.mg.824aa4f6f89ab706
EmsisoftTrojan.BRMon.Gen.1 (B)
SentinelOneStatic AI – Malicious PE
JiangminBackdoor.Androm.wgo
AviraHEUR/AGEN.1117310
eGambitUnsafe.AI_Score_99%
MicrosoftTrojan:Win32/Gandcrab.GM!MTB
ArcabitTrojan.BRMon.Gen.1
GDataTrojan.BRMon.Gen.1
AhnLab-V3Trojan/Win32.Magniber.R218668
Acronissuspicious
McAfeeGenericRXDW-VH!824AA4F6F89A
MAXmalware (ai score=99)
VBA32BScope.Trojan.Downloader
MalwarebytesRansom.Hermes
PandaTrj/CI.A
TrendMicro-HouseCallRansom_HPGANDCRAB.SMG2
RisingBackdoor.Androm!8.113 (CLOUD)
YandexTrojan.GenAsa!u4QTzrSq1Hc
IkarusVirus.Win32.Obfuscator
MaxSecureTrojan.Emotet.Gen.3
FortinetW32/Kryptik.GCBO!tr
AVGWin32:Malware-gen
Paloaltogeneric.ml
Qihoo-360Win32/Ransom.GandCrab.HwoCEpsA

How to remove Win32/Kryptik.GCHA 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.GCHA 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.GCHA 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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