Win32/Kryptik.GYRU

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

What is Win32/Kryptik.GYRU infection?

In this post you will certainly find about the definition of Win32/Kryptik.GYRU as well as its unfavorable impact on your computer system. Such ransomware are a kind of malware that is clarified by on-line fraudulences to require paying the ransom money by a sufferer.

GridinSoft Anti-Malware Review
It is better to prevent, than repair and repent!
When we talk about the intrusion of unfamiliar programs into your computer’s work, the proverb “Forewarned is forearmed” describes the situation as accurately as possible. Gridinsoft Anti-Malware is exactly the tool that is always useful to have in your armory: fast, efficient, up-to-date. It is appropriate to use it as an emergency help at the slightest suspicion of infection.
Gridinsoft Anti-Malware 6-day trial available.
EULA | Privacy Policy | 10% Off Coupon
Subscribe to our Telegram channel to be the first to know about news and our exclusive materials on information security.

Most of the situations, Win32/Kryptik.GYRU ransomware will advise its sufferers to initiate funds transfer for the objective of reducing the effects of the modifications that the Trojan infection has actually introduced to the target’s gadget.

Win32/Kryptik.GYRU Summary

These modifications 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.
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • 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.

  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Executed a process and injected code into it, probably while unpacking;
  • 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
  • Collects information about installed applications;
  • 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.
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records situated on the victim’s hard disk — so the victim can no more make use of the information;
  • Preventing regular access 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
z.whorecord.xyzTrojanRansom.Shade
a.tomx.xyzTrojanRansom.Shade

Win32/Kryptik.GYRU

The most regular networks whereby Win32/Kryptik.GYRU Ransomware are infused are:

  • By ways of phishing emails;
  • As a consequence of customer ending up on a source that hosts a malicious software;

As quickly as the Trojan is effectively injected, it will either cipher the information on the victim’s PC or avoid the device from operating in an appropriate manner – while likewise positioning a ransom money note that states the requirement for the victims to impact the repayment for the purpose of decrypting the files or bring back the documents system back to the initial problem. In a lot of circumstances, the ransom money note will certainly show up when the customer restarts the PC after the system has already been damaged.

Win32/Kryptik.GYRU distribution networks.

In different corners of the globe, Win32/Kryptik.GYRU expands by leaps and also bounds. Nonetheless, the ransom money notes and techniques of extorting the ransom money amount might differ relying on specific regional (regional) setups. The ransom money notes and also tricks of obtaining the ransom amount might vary depending on specific regional (local) settings.

Ransomware injection

For example:

    Faulty signals regarding unlicensed software program.

    In certain areas, the Trojans usually wrongfully report having discovered some unlicensed applications enabled on the victim’s gadget. The alert after that requires the individual to pay the ransom.

    Faulty statements about illegal web content.

    In nations where software piracy is less preferred, this technique is not as efficient for the cyber fraudulences. Conversely, the Win32/Kryptik.GYRU popup alert may falsely assert to be deriving from a police establishment and will report having located kid pornography or various other unlawful data on the gadget.

    Win32/Kryptik.GYRU popup alert might wrongly claim to be deriving from a legislation enforcement establishment and also will certainly report having located child pornography or other unlawful data on the gadget. The alert will in a similar way include a need for the individual to pay the ransom money.

Technical details

File Info:

crc32: 8E06AB64
md5: ad137e5b2ea970fcf1db83d51715f38c
name: 2c.jpg
sha1: 78b802f6e90a9bfe7d520cb0ae7fbc7a09b2465c
sha256: 8309b896b0f7b895e84ac2ad491be11870e20bd101bf8e4b0dc1b8adc85b8530
sha512: 5973f43a2af4b9de83339fe44d8269f1e485c7b6b870122116bd17603ebd0919a329607317d28348132094ba9187bb4abeeac5595a8528bfa9b7b8f621f2d724
ssdeep: 24576:J7/k8qDC27Gdi5xx8LvtlWy9BTuC1G86qRkNLhx4UH8A0FdEZbLFNlbfeJV:N/I7UiTx8RlRrlRwhmI8nzUVnGv
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: xa9IBE Software 2016 All rights reserved.
InternalName: Performed
FileVersion: 2.6.6.2
CompanyName: IBE Software
PrivateBuild: 2.6.6.2
LegalTrademarks: xa9IBE Software 2016 All rights reserved.
ProductName: Performed
ProductVersion: 2.6.6.2
FileDescription: River Sdr Programming Interaction Ripe
Translation: 0x0409 0x04b0

Win32/Kryptik.GYRU also known as:

GridinSoftTrojan.Ransom.Gen
MicroWorld-eScanTrojan.GenericKD.42043462
FireEyeGeneric.mg.ad137e5b2ea970fc
CAT-QuickHealTrojanRansom.Shade
McAfeeArtemis!AD137E5B2EA9
ALYacTrojan.Ransom.Shade
MalwarebytesSpyware.PasswordStealer
SangforMalware
CrowdStrikewin/malicious_confidence_100% (W)
BitDefenderTrojan.GenericKD.42043462
K7GWRiskware ( 0040eff71 )
K7AntiVirusRiskware ( 0040eff71 )
BitDefenderThetaGen:NN.ZexaF.32515.Av0@aqRyK4ji
SymantecDownloader
TrendMicro-HouseCallRansom_Shade.R004C0WKN19
AvastWin32:Trojan-gen
GDataTrojan.GenericKD.42043462
KasperskyTrojan-Ransom.Win32.Shade.qji
RisingTrojan.Generic@ML.91 (RDMK:5yaTH2P+g6mTgocX8vX4rw)
Endgamemalicious (high confidence)
DrWebTrojan.Encoder.858
ZillyaTrojan.Kryptik.Win32.1858006
Invinceaheuristic
McAfee-GW-EditionBehavesLike.Win32.AdwareLoadMoney.tc
SophosMal/Generic-S
APEXMalicious
CyrenW32/Trojan.KXTX-0919
WebrootW32.Trojan.GenKD
ArcabitTrojan.Generic.D2818846
ZoneAlarmTrojan-Ransom.Win32.Shade.qji
MicrosoftTrojan:Win32/Tiggre!plock
AhnLab-V3Malware/Win32.Generic.C3588920
Acronissuspicious
VBA32BScope.TrojanDownloader.Upatre
MAXmalware (ai score=100)
Ad-AwareTrojan.GenericKD.42043462
CylanceUnsafe
PandaTrj/CI.A
ESET-NOD32a variant of Win32/Kryptik.GYRU
YandexTrojan.Shade!
IkarusTrojan-Ransom.Crypter
MaxSecureTrojan.Malware.74016454.susgen
FortinetW32/GenKryptik.DYGE!tr.ransom
AVGWin32:Trojan-gen
Paloaltogeneric.ml
Qihoo-360Win32/Trojan.Ransom.96d

How to remove Win32/Kryptik.GYRU virus?

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 install-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.GYRU 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.GYRU you can always ask me in the comments for getting help.

Sending
User Review
0 (0 votes)
Comments Rating 0 (0 reviews)

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.

Leave a Reply

Sending