Win32/Kryptik.GDJU

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

What is Win32/Kryptik.GDJU infection?

In this post you will certainly locate regarding the meaning of Win32/Kryptik.GDJU and also its negative effect on your computer. Such ransomware are a type of malware that is specified by on the internet frauds to require paying the ransom by a target.

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In the majority of the instances, Win32/Kryptik.GDJU infection will certainly instruct its sufferers to start funds transfer for the function of reducing the effects of the amendments that the Trojan infection has actually introduced to the target’s gadget.

Win32/Kryptik.GDJU 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.
  • 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
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files situated on the victim’s disk drive — so the victim can no longer utilize the data;
  • Preventing regular accessibility to the victim’s workstation;
Similar behavior
Related domains
z.whorecord.xyzTrojan.Win32.U.Ransom.314880
a.tomx.xyzTrojan.Win32.U.Ransom.314880
ipv4bot.whatismyipaddress.comTrojan.Win32.U.Ransom.314880
dns1.soprodns.ruTrojan.Win32.U.Ransom.314880
nomoreransom.coinTrojan.Win32.U.Ransom.314880
nomoreransom.bitTrojan.Win32.U.Ransom.314880
dns2.soprodns.ruTrojan.Win32.U.Ransom.314880
gandcrab.bitTrojan.Win32.U.Ransom.314880

Win32/Kryptik.GDJU

One of the most common networks whereby Win32/Kryptik.GDJU Ransomware Trojans are injected 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 an effect of customer winding up on a source that holds a harmful software program;

As quickly as the Trojan is effectively infused, it will certainly either cipher the data on the victim’s computer or protect against the device from operating in a proper manner – while likewise positioning a ransom money note that mentions the need for the victims to impact the settlement for the purpose of decrypting the records or bring back the data system back to the first problem. In a lot of circumstances, the ransom money note will certainly turn up when the customer reboots the PC after the system has actually currently been damaged.

Win32/Kryptik.GDJU circulation networks.

In various corners of the world, Win32/Kryptik.GDJU expands by jumps and bounds. Nonetheless, the ransom notes as well as methods of extorting the ransom money quantity might vary relying on particular local (local) setups. The ransom notes and tricks of extorting the ransom amount might vary depending on certain neighborhood (regional) settings.

Ransomware injection

For instance:

    Faulty notifies concerning unlicensed software program.

    In specific locations, the Trojans usually wrongfully report having identified some unlicensed applications made it possible for on the target’s device. The alert after that demands the user to pay the ransom money.

    Faulty statements about prohibited material.

    In countries where software application piracy is less prominent, this approach is not as effective for the cyber frauds. Alternatively, the Win32/Kryptik.GDJU popup alert might wrongly declare to be deriving from a police establishment and will certainly report having situated youngster porn or other illegal information on the gadget.

    Win32/Kryptik.GDJU popup alert may falsely claim to be deriving from a regulation enforcement organization and will certainly report having situated youngster porn or various other unlawful information on the tool. The alert will in a similar way include a requirement for the customer to pay the ransom money.

Technical details

File Info:

crc32: 0CD70545
md5: 26ccb76bd94bb2b000fe60ee723a4ba5
name: 26CCB76BD94BB2B000FE60EE723A4BA5.mlw
sha1: 1c913892e8e023a5f5507cc41959a5c5066b4248
sha256: 4e64e767e741bbded0c585b4bf06c8e84c508c6d2dd722906f7b76712af6e681
sha512: d811bf16d2a726159dff39027c97ce6a7e6b310c1f76dce84bf31348956439417ad1524ae3ab4336067fd905c57519884a09a136cee42d9feede87ed41e58399
ssdeep: 6144:pRCJn6Aek75ba6sD666sGsEAg28OumH0UrhvQXyCe+XpP2:p901ba6g6yL8OuElHr+XpP
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.GDJU also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
MicroWorld-eScanTrojan.BRMon.Gen.3
FireEyeGeneric.mg.26ccb76bd94bb2b0
CAT-QuickHealTrojan.Chapak.ZZ5
ALYacTrojan.BRMon.Gen.3
MalwarebytesMachineLearning/Anomalous.100%
VIPRETrojan.Win32.Generic!BT
AegisLabTrojan.Win32.Generic.4!c
SangforTrojan.Win32.Save.a
K7AntiVirusTrojan ( 003e58dd1 )
BitDefenderTrojan.BRMon.Gen.3
K7GWTrojan ( 0056e9401 )
Cybereasonmalicious.bd94bb
BitDefenderThetaGen:NN.ZexaF.34590.tuW@aCD!fci
CyrenW32/S-60546053!Eldorado
SymantecPacked.Generic.525
APEXMalicious
AvastWin32:Rootkit-gen [Rtk]
KasperskyHEUR:Trojan.Win32.Generic
AlibabaTrojan:Win32/Kryptik.822f8776
NANO-AntivirusTrojan.Win32.GandCrypt.eydftw
ViRobotTrojan.Win32.U.Ransom.314880
TencentMalware.Win32.Gencirc.10ba57e1
Ad-AwareTrojan.BRMon.Gen.3
TACHYONRansom/W32.GandCrypt.314880
SophosMal/Generic-S + Mal/GandCrab-B
ComodoTrojWare.Win32.Ransom.GandCrab.A@7jk3ar
F-SecureHeuristic.HEUR/AGEN.1117310
DrWebBackDoor.IRC.Bot.3487
ZillyaTrojan.GandCrypt.Win32.91
TrendMicroTSPY_EMOTET.SMB1
McAfee-GW-EditionBehavesLike.Win32.Generic.fc
EmsisoftTrojan.BRMon.Gen.3 (B)
IkarusTrojan-Dropper.Win32.Danabot
GDataTrojan.BRMon.Gen.3
JiangminTrojan.GandCrypt.au
AviraHEUR/AGEN.1117310
Antiy-AVLTrojan[Ransom]/Win32.GandCrypt
ArcabitTrojan.BRMon.Gen.3
ZoneAlarmHEUR:Trojan.Win32.Generic
MicrosoftRansom:Win32/GandCrab!rfn
CynetMalicious (score: 100)
AhnLab-V3Trojan/Win32.GandCrypt.C2410430
Acronissuspicious
McAfeePacked-FAG!26CCB76BD94B
MAXmalware (ai score=99)
VBA32BScope.Trojan.MulDrop
CylanceUnsafe
PandaTrj/Genetic.gen
ESET-NOD32a variant of Win32/Kryptik.GDJU
TrendMicro-HouseCallTSPY_EMOTET.SMB1
RisingMalware.Obscure!1.A3BB (CLOUD)
YandexTrojan.GandCrypt!sBWlYDMVO18
SentinelOneStatic AI – Malicious PE
FortinetW32/Kryptik.HCUD!tr
AVGWin32:Rootkit-gen [Rtk]
Paloaltogeneric.ml
CrowdStrikewin/malicious_confidence_100% (D)
Qihoo-360Win32/RootKit.Rootkit.7e5

How to remove Win32/Kryptik.GDJU ransomware?

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.GDJU 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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Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Win32/Kryptik.GDJU 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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