Win32/Kryptik.GPRG

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

What is Win32/Kryptik.GPRG infection?

In this post you will certainly find concerning the definition of Win32/Kryptik.GPRG as well as its negative effect on your computer system. Such ransomware are a form of malware that is specified by online frauds to require paying the ransom money by a victim.

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Most of the cases, Win32/Kryptik.GPRG infection will advise its victims to initiate funds transfer for the objective of neutralizing the changes that the Trojan infection has actually introduced to the victim’s tool.

Win32/Kryptik.GPRG 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.
  • Detected script timer window indicative of sleep style evasion;
  • A named pipe was used for inter-process communication;
  • 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.

  • A process created a hidden window;
  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • 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.
  • A scripting utility was executed;
  • Uses Windows utilities for basic functionality;
  • Attempts to delete volume shadow copies;
  • Modifies boot configuration settings;
  • 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
  • Creates a hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • Creates a copy of itself;
  • Collects information to fingerprint the system. There are behavioral human characteristics that can be used to digitally identify a person to grant access to systems, devices, or data. Unlike passwords and verification codes, fingerprints are fundamental parts of user’s identities. Among the threats blocked on biometric data processing and storage systems is spyware, the malware used in phishing attacks (mostly spyware downloaders and droppers), ransomware, and Banking Trojans as posing the greatest danger.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the documents located on the victim’s hard disk drive — so the victim can no more make use of the data;
  • Preventing routine access to the sufferer’s workstation;
Similar behavior
Related domains
z.whorecord.xyzTrojan-Ransom.Win32.SageCrypt.fjg
a.tomx.xyzTrojan-Ransom.Win32.SageCrypt.fjg

Win32/Kryptik.GPRG

The most normal networks whereby Win32/Kryptik.GPRG Trojans are infused are:

  • By means of phishing e-mails;
  • As a repercussion of customer ending up on a resource that hosts a destructive software program;

As soon as the Trojan is efficiently injected, it will either cipher the information on the target’s computer or stop the gadget from working in an appropriate manner – while likewise putting a ransom note that discusses the need for the sufferers to effect the settlement for the objective of decrypting the papers or restoring the documents system back to the initial condition. In many circumstances, the ransom money note will certainly come up when the client restarts the PC after the system has already been damaged.

Win32/Kryptik.GPRG circulation networks.

In different corners of the globe, Win32/Kryptik.GPRG grows by leaps and also bounds. Nonetheless, the ransom money notes and techniques of extorting the ransom quantity might vary depending upon particular local (local) settings. The ransom money notes and methods of obtaining the ransom quantity might differ depending on particular local (regional) settings.

Ransomware injection

For example:

    Faulty alerts concerning unlicensed software program.

    In particular locations, the Trojans frequently wrongfully report having actually found some unlicensed applications allowed on the target’s gadget. The sharp after that demands the individual to pay the ransom money.

    Faulty statements regarding illegal material.

    In nations where software piracy is less preferred, this method is not as efficient for the cyber scams. Conversely, the Win32/Kryptik.GPRG popup alert may incorrectly claim to be originating from a police institution and will certainly report having situated youngster porn or other unlawful information on the gadget.

    Win32/Kryptik.GPRG popup alert may falsely assert to be acquiring from a legislation enforcement establishment and also will report having located child porn or other prohibited data on the gadget. The alert will in a similar way consist of a demand for the user to pay the ransom.

Technical details

File Info:

crc32: F4256003
md5: 3da9aae2a637de409b7cf7ef4b6e02cc
name: upload_file
sha1: d03075ee40e61862b18de4dcf7f0373d7a2ed697
sha256: d48065a0aafccae7758e31d78cf01e08e85269324d5bc4b5048138c9a6603ef8
sha512: d2edf5be183dafbd5c8aab66d8b9192771bf092293b904fe6e22b01b74cf6c811dcde9f19d04e856ee803e734f5351d9491d2c836bd3c4f8a3e89b21168ddcda
ssdeep: 6144:02EDYH4aaPx2v909HPNvg/7K4GHTOm23cdKsXv5o7bKSMwaM0hY:pV5l09lg/7HGqm50sXv5gKSMwaM0hY
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.GPRG also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetectVM.malware1
MicroWorld-eScanTrojan.GenericKD.34249860
FireEyeGeneric.mg.3da9aae2a637de40
McAfeeArtemis!3DA9AAE2A637
CylanceUnsafe
VIPRETrojan.Win32.Generic!BT
AegisLabTrojan.Win32.Malicious.4!c
CrowdStrikewin/malicious_confidence_100% (W)
BitDefenderTrojan.GenericKD.34249860
K7GWTrojan ( 0050b2d01 )
K7AntiVirusTrojan ( 0050b2d01 )
Invinceaheuristic
SymantecML.Attribute.HighConfidence
APEXMalicious
AvastWin32:Trojan-gen
GDataTrojan.GenericKD.34249860
KasperskyTrojan-Ransom.Win32.SageCrypt.fjg
AlibabaRansom:Win32/generic.ali2000010
TencentMalware.Win32.Gencirc.10bbe17d
Endgamemalicious (high confidence)
TACHYONRansom/W32.SageCrypt.416256
EmsisoftTrojan.GenericKD.34249860 (B)
F-SecureHeuristic.HEUR/AGEN.1115437
DrWebTrojan.Encoder.32240
ZillyaTrojan.SageCrypt.Win32.204
TrendMicroRansom_MILICRY.F117DA
Trapminemalicious.high.ml.score
SophosMal/Generic-S
SentinelOneDFI – Suspicious PE
JiangminTrojan.SageCrypt.gg
AviraHEUR/AGEN.1115437
eGambitUnsafe.AI_Score_99%
Antiy-AVLTrojan[Ransom]/Win32.SageCrypt
MicrosoftTrojan:Win32/Wacatac.C!ml
ArcabitTrojan.Generic.D20A9C84
ZoneAlarmTrojan-Ransom.Win32.SageCrypt.fjg
CynetMalicious (score: 100)
AhnLab-V3Trojan/Win32.Kryptik.R346410
Acronissuspicious
VBA32Hoax.SageCrypt
ALYacTrojan.GenericKD.34249860
MAXmalware (ai score=86)
Ad-AwareTrojan.GenericKD.34249860
PandaTrj/CI.A
ESET-NOD32a variant of Win32/Kryptik.GPRG
TrendMicro-HouseCallRansom_MILICRY.F117DA
RisingStealer.Delf!8.415 (CLOUD)
IkarusTrojan.Win32.Crypt
FortinetW32/Kryptik.GPRG!tr
BitDefenderThetaGen:NN.ZexaF.34142.zOW@a8oT6Rfi
AVGWin32:Trojan-gen
Qihoo-360Trojan.Generic

How to remove Win32/Kryptik.GPRG 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

The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

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.GPRG 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.GPRG 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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