Win32/Kryptik.GDCD

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

What is Win32/Kryptik.GDCD infection?

In this short article you will locate concerning the meaning of Win32/Kryptik.GDCD and its unfavorable effect on your computer system. Such ransomware are a form of malware that is clarified by on-line scams to demand paying the ransom by a target.

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In the majority of the instances, Win32/Kryptik.GDCD ransomware will advise its targets to initiate funds move for the purpose of reducing the effects of the changes that the Trojan infection has introduced to the target’s gadget.

Win32/Kryptik.GDCD 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;
  • 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;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents found on the target’s hard disk drive — so the target can no longer utilize the data;
  • Preventing routine accessibility 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
ipv4bot.whatismyipaddress.comTrojan.Win32.Ransom.302592.J
dns1.soprodns.ruTrojan.Win32.Ransom.302592.J
nomoreransom.coinTrojan.Win32.Ransom.302592.J
nomoreransom.bitTrojan.Win32.Ransom.302592.J
dns2.soprodns.ruTrojan.Win32.Ransom.302592.J
gandcrab.bitTrojan.Win32.Ransom.302592.J

Win32/Kryptik.GDCD

The most regular channels whereby Win32/Kryptik.GDCD Ransomware are injected are:

  • By methods of phishing emails;
  • As a repercussion of individual winding up on a source that holds a destructive software application;

As soon as the Trojan is successfully injected, it will certainly either cipher the data on the victim’s PC or avoid the gadget from functioning in a proper manner – while also positioning a ransom money note that mentions the need for the victims to effect the payment for the purpose of decrypting the files or recovering the file system back to the initial condition. In most instances, the ransom money note will turn up when the customer reboots the COMPUTER after the system has already been harmed.

Win32/Kryptik.GDCD distribution networks.

In different corners of the world, Win32/Kryptik.GDCD grows by jumps as well as bounds. However, the ransom notes as well as techniques of extorting the ransom money amount may differ depending on specific neighborhood (regional) setups. The ransom money notes and techniques of extorting the ransom amount might vary depending on specific regional (regional) setups.

Ransomware injection

For instance:

    Faulty informs regarding unlicensed software application.

    In specific locations, the Trojans usually wrongfully report having actually found some unlicensed applications made it possible for on the sufferer’s gadget. The alert after that requires the individual to pay the ransom money.

    Faulty declarations concerning prohibited material.

    In countries where software piracy is less prominent, this technique is not as reliable for the cyber frauds. Additionally, the Win32/Kryptik.GDCD popup alert may incorrectly assert to be originating from a law enforcement institution as well as will certainly report having situated youngster porn or various other illegal information on the device.

    Win32/Kryptik.GDCD popup alert may falsely declare to be obtaining from a legislation enforcement organization as well as will certainly report having located youngster porn or various other illegal data on the tool. The alert will similarly contain a need for the user to pay the ransom.

Technical details

File Info:

crc32: 8D905E7F
md5: a53618973afc705e9a123b084976c166
name: A53618973AFC705E9A123B084976C166.mlw
sha1: 624d6445ed8ae417839e02f300472c7f04d07648
sha256: 4ef69a181f31fbf41815c6c78be1328b7d8ba1e65323e13eb455765605000a23
sha512: ea0e87fb4dc1252f0a755de4ea69dc1d79f33c2067ee71291d183978717430654384e57cdefac18ae9f51903e8d13597602bdb4f79ed1e81a62455324000eec0
ssdeep: 6144:jZJNhuNmse02+DrcuoCjccpS7RgjdQpagsTDYSf08:TNh9se02+D4lcpS9ad4LsTDC8
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.GDCD also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
MicroWorld-eScanTrojan.Emotet.Gen.3
FireEyeGeneric.mg.a53618973afc705e
CAT-QuickHealTrojan.Chapak.ZZ6
McAfeePacked-ZG!A53618973AFC
CylanceUnsafe
VIPRETrojan.Win32.Generic!BT
SangforTrojan.Win32.Save.a
K7AntiVirusTrojan ( 0053305e1 )
BitDefenderTrojan.Emotet.Gen.3
K7GWTrojan ( 0052743e1 )
Cybereasonmalicious.73afc7
BitDefenderThetaGen:NN.ZexaF.34590.syW@aut7KNj
CyrenW32/S-135e99c5!Eldorado
SymantecPacked.Generic.525
APEXMalicious
AvastFileRepMalware
ClamAVWin.Packed.Gandcrab-6502433-0
KasperskyHEUR:Trojan.Win32.Generic
NANO-AntivirusTrojan.Win32.Banker1.exzppm
ViRobotTrojan.Win32.Ransom.302592.J
TencentMalware.Win32.Gencirc.10b588ba
Ad-AwareTrojan.Emotet.Gen.3
SophosMal/Generic-R + Mal/GandCrab-A
ComodoTrojWare.Win32.Cloxer.AY@7o68fu
F-SecureHeuristic.HEUR/AGEN.1103299
DrWebTrojan.PWS.Banker1.25405
ZillyaTrojan.GandCrypt.Win32.78
TrendMicroRansom_HPGANDCRAB.SMONT
McAfee-GW-EditionBehavesLike.Win32.Generic.dc
EmsisoftTrojan.Emotet.Gen.3 (B)
SentinelOneStatic AI – Malicious PE
eGambitUnsafe.AI_Score_99%
AviraHEUR/AGEN.1103299
MAXmalware (ai score=98)
Antiy-AVLTrojan[Ransom]/Win32.GandCrypt
MicrosoftRansom:Win32/GandCrab!rfn
ArcabitTrojan.Emotet.Gen.3
SUPERAntiSpywareRansom.GandCrypt/Variant
ZoneAlarmHEUR:Trojan.Win32.Generic
GDataTrojan.Emotet.Gen.3
CynetMalicious (score: 100)
AhnLab-V3Trojan/Win32.GandCrypt.C2407383
Acronissuspicious
VBA32TrojanRansom.GandCrypt
MalwarebytesTrojan.MalPack
PandaTrj/Genetic.gen
ESET-NOD32a variant of Win32/Kryptik.GDCD
TrendMicro-HouseCallRansom_HPGANDCRAB.SMONT
RisingTrojan.Kryptik!1.B048 (CLOUD)
YandexTrojan.GenAsa!M7GRZmxDq18
IkarusTrojan-Downloader.Win32.Zurgop
FortinetW32/GenKryptik.BAPN!worm
AVGFileRepMalware
Paloaltogeneric.ml
CrowdStrikewin/malicious_confidence_100% (D)
Qihoo-360Win32/Trojan.c3b

How to remove Win32/Kryptik.GDCD 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.

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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.GDCD 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.GDCD 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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