Win32/Kryptik.GUNO

What is Win32/Kryptik.GUNO infection?

In this article you will certainly locate regarding the meaning of Win32/Kryptik.GUNO and its adverse influence on your computer system. Such ransomware are a type of malware that is clarified by on the internet fraudulences to require paying the ransom money by a sufferer.

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In the majority of the situations, Win32/Kryptik.GUNO virus will advise its sufferers to start funds transfer for the function of neutralizing the modifications that the Trojan infection has actually introduced to the sufferer’s gadget.

Win32/Kryptik.GUNO 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.
  • A process created a hidden window;
  • Unconventionial language used in binary resources: Polish;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • The executable is compressed using UPX;
  • Uses Windows utilities for basic functionality;
  • Attempts to delete volume shadow copies;
  • Attempts to stop active services;
  • 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!
  • Modifies boot configuration settings;
  • Exhibits possible ransomware file modification behavior;
  • 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 records located on the victim’s disk drive — so the target can no longer make use of the data;
  • Preventing routine 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.GUNO

The most common channels through which Win32/Kryptik.GUNO 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 a repercussion of customer ending up on a resource that organizes a malicious software;

As quickly as the Trojan is successfully injected, it will certainly either cipher the data on the victim’s computer or avoid the gadget from operating in a proper manner – while additionally placing a ransom note that states the requirement for the sufferers to effect the repayment for the objective of decrypting the records or recovering the file system back to the preliminary condition. In many circumstances, the ransom note will turn up when the client restarts the PC after the system has actually currently been harmed.

Win32/Kryptik.GUNO distribution networks.

In various edges of the world, Win32/Kryptik.GUNO grows by leaps and bounds. Nonetheless, the ransom notes and methods of obtaining the ransom money quantity may differ depending upon certain neighborhood (regional) setups. The ransom notes and methods of extorting the ransom money amount may vary depending on specific regional (local) setups.

Ransomware injection

For example:

    Faulty signals regarding unlicensed software program.

    In particular areas, the Trojans frequently wrongfully report having discovered some unlicensed applications made it possible for on the victim’s gadget. The sharp after that demands the customer to pay the ransom money.

    Faulty declarations concerning illegal web content.

    In countries where software piracy is less prominent, this technique is not as effective for the cyber frauds. Additionally, the Win32/Kryptik.GUNO popup alert may incorrectly declare to be deriving from a law enforcement organization and will certainly report having located kid porn or various other unlawful data on the tool.

    Win32/Kryptik.GUNO popup alert may falsely claim to be acquiring from a regulation enforcement institution as well as will certainly report having located child porn or other unlawful data on the device. The alert will likewise include a need for the user to pay the ransom money.

Technical details

File Info:

crc32: 49637BB1
md5: a4ab6a7688db8504d2da1f1bc4deeea5
name: A4AB6A7688DB8504D2DA1F1BC4DEEEA5.mlw
sha1: 70d212ff3431a08eaa50b25b36e125f756b783f1
sha256: d0ed831a75b49d821584155c0a891d1c21616b3f48475dc95ef8c7b0b560aab5
sha512: f6532d2fef910502446d011d7c0e0b20c08b361f0c96f156c5846204cb544f25ed8296e093159707e47e708f0c4fc198c399e6abd073b52c781efea43b8c9fbe
ssdeep: 6144:5bqtxBECSJjldMbs9Ef2LUPx168DSc6A9dsx5fzS7L1qmZythIW:5bqKjIbsQ2iq1ud+5bSVvhW
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

0: [No Data]

Win32/Kryptik.GUNO also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 005523791 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.28813
Cynet Malicious (score: 100)
ALYac Trojan.Ransom.Sodinokibi
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_80% (D)
Alibaba Trojan:Win32/DelShad.06f00e07
K7GW Trojan ( 005523791 )
Cybereason malicious.688db8
Symantec Packed.Generic.525
ESET-NOD32 a variant of Win32/Kryptik.GUNO
APEX Malicious
Avast FileRepMalware
Kaspersky Trojan.Win32.DelShad.tm
BitDefender Gen:Heur.Mint.Dreidel.rmGfxe3fkXlG
NANO-Antivirus Trojan.Win32.DelShad.fsxgvu
ViRobot Trojan.Win32.Sodinokibi.428032[UPX]
MicroWorld-eScan Gen:Heur.Mint.Dreidel.rmGfxe3fkXlG
Tencent Win32.Trojan.Delshad.Lmul
Ad-Aware Gen:Heur.Mint.Dreidel.rmGfxe3fkXlG
Sophos Mal/Generic-R + Mal/GandCrab-H
Comodo TrojWare.Win32.TrojanDownloader.Deyma.A@8b6jjt
BitDefenderTheta Gen:NN.ZexaF.34670.rmGfae3fkXlG
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom.Win32.SODINOKIBI.AUWTG
McAfee-GW-Edition BehavesLike.Win32.Trojan.dc
FireEye Generic.mg.a4ab6a7688db8504
Emsisoft Gen:Heur.Mint.Dreidel.rmGfxe3fkXlG (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan.PSW.Azorult.cpr
Avira TR/Crypt.ULPM.Gen
eGambit Unsafe.AI_Score_96%
Arcabit Trojan.Mint.Dreidel.rmGfxe3fkXlG
AegisLab Trojan.Win32.DelShad.4!c
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Gen:Heur.Mint.Dreidel.rmGfxe3fkXlG
TACHYON Ransom/W32.Sodinokibi.428032
AhnLab-V3 Malware/Win32.Generic.C3334740
Acronis suspicious
McAfee Artemis!A4AB6A7688DB
MAX malware (ai score=99)
VBA32 BScope.Trojan.Gandcrab
Malwarebytes Ransom.Sodinokibi
Panda Trj/GdSda.A
TrendMicro-HouseCall Ransom.Win32.SODINOKIBI.AUWTG
Rising Malware.Obscure/Heur!1.9E03 (CLOUD)
Ikarus Trojan.Crypt
MaxSecure Trojan.Malware.74134469.susgen
Fortinet W32/Kryptik.GUKZ!tr
AVG FileRepMalware
Paloalto generic.ml
Qihoo-360 Win32/Ransom.REvil.HgIASQ8A

How to remove Win32/Kryptik.GUNO 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

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.GUNO 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.GUNO 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/products/

About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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