Win32/Kryptik.GBUU

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

What is Win32/Kryptik.GBUU infection?

In this article you will certainly locate about the meaning of Win32/Kryptik.GBUU and also its unfavorable effect on your computer. Such ransomware are a kind of malware that is clarified by online frauds to require paying the ransom by a victim.

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In the majority of the cases, Win32/Kryptik.GBUU ransomware will instruct its sufferers to launch funds move for the objective of counteracting the amendments that the Trojan infection has actually introduced to the sufferer’s tool.

Win32/Kryptik.GBUU Summary

These adjustments can be as follows:

  • 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.
  • Attempts to connect to a dead IP:Port (1 unique times);
  • 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.
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic;
  • 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.
  • 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
  • Ciphering the files situated on the sufferer’s hard disk — so the victim can no more make use of the information;
  • Preventing normal access to the target’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.xyz Ransom.Win32.Foreign.nxkk
a.tomx.xyz Ransom.Win32.Foreign.nxkk
smtp.googlemail.com Ransom.Win32.Foreign.nxkk
hey.justsimpledomain.com Ransom.Win32.Foreign.nxkk

Win32/Kryptik.GBUU

One of the most typical channels where Win32/Kryptik.GBUU Ransomware are infused 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 consequence of customer winding up on a source that holds a harmful software program;

As quickly as the Trojan is efficiently infused, it will certainly either cipher the information on the victim’s PC or stop the gadget from operating in a correct way – while also placing a ransom note that points out the requirement for the sufferers to impact the payment for the objective of decrypting the files or recovering the data system back to the first problem. In most circumstances, the ransom money note will certainly show up when the client reboots the COMPUTER after the system has currently been damaged.

Win32/Kryptik.GBUU distribution channels.

In various corners of the world, Win32/Kryptik.GBUU grows by jumps and also bounds. Nonetheless, the ransom money notes and also tricks of extorting the ransom amount may differ depending upon certain neighborhood (local) setups. The ransom money notes and also methods of obtaining the ransom money amount may vary depending on certain regional (regional) setups.

Ransomware injection

For example:

    Faulty notifies about unlicensed software.

    In specific areas, the Trojans often wrongfully report having found some unlicensed applications made it possible for on the sufferer’s tool. The sharp after that demands the user to pay the ransom.

    Faulty statements concerning unlawful web content.

    In nations where software program piracy is less popular, this technique is not as reliable for the cyber scams. Alternatively, the Win32/Kryptik.GBUU popup alert might incorrectly declare to be originating from a police organization and will certainly report having located youngster porn or various other unlawful information on the gadget.

    Win32/Kryptik.GBUU popup alert may falsely claim to be acquiring from a regulation enforcement organization as well as will report having situated youngster pornography or various other illegal data on the tool. The alert will similarly contain a need for the user to pay the ransom money.

Technical details

File Info:

crc32: 8D5F94AA
md5: b2435a08e8cb2a236785cfe1935091ad
name: B2435A08E8CB2A236785CFE1935091AD.mlw
sha1: 42d310ee83862405b25e350dbc9daee74724997f
sha256: 5041c478e15087a2e1465820c5fd0cdac1b63af9da30ad56b26fd40c8846ef5b
sha512: 426220b0cea09f06b72cc6a1c674fb75f5acc5b661ecdf53b5b2e6ccee45d335ac11b514b02784265256f2b49c851caf35297486cd8252da7fb1ba4f26fef97c
ssdeep: 6144:kPhRSdEVQGMqJnu9RFI7VFXvoK+BMYBBaHTocu6cx+8KpKwqJ:0UK9buZI7/wxgzriLKplE
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.GBUU also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
FireEye Generic.mg.b2435a08e8cb2a23
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
Sangfor Ransom.Win32.Foreign.nxkk
Cybereason malicious.e83862
BitDefenderTheta Gen:NN.ZexaF.34608.wqW@aqnX4zfi
Symantec Trojan Horse
Avast Win32:Malware-gen
Kaspersky Trojan-Ransom.Win32.Foreign.nxkk
NANO-Antivirus Trojan.Win32.Kryptik.exelqf
Rising Ransom.Foreign!8.292 (CLOUD)
Comodo Malware@#3reh36d527gll
F-Secure Heuristic.HEUR/AGEN.1104904
McAfee-GW-Edition BehavesLike.Win32.Dropper.fc
Sophos Mal/Generic-S
Ikarus Trojan.Win32.Crypt
Jiangmin Trojan.Foreign.ebm
Avira HEUR/AGEN.1104904
MAX malware (ai score=99)
Antiy-AVL Trojan[Ransom]/Win32.Foreign
Microsoft Trojan:Win32/Tiggre!rfn
ZoneAlarm Trojan-Ransom.Win32.Foreign.nxkk
Cynet Malicious (score: 100)
AhnLab-V3 Win-Trojan/Sagecrypt.Gen
Acronis suspicious
McAfee Artemis!B2435A08E8CB
VBA32 Trojan-Ransom.Foreign
Malwarebytes Generic.Malware/Suspicious
Panda Trj/CI.A
APEX Malicious
ESET-NOD32 a variant of Win32/Kryptik.GBUU
Tencent Win32.Trojan.Foreign.Pcrz
Yandex Trojan.Foreign!tvmRnlJwdow
SentinelOne Static AI – Malicious PE
eGambit Unsafe.AI_Score_99%
Fortinet W32/Kryptik.FQML!tr
AVG Win32:Malware-gen
Paloalto generic.ml
CrowdStrike win/malicious_confidence_80% (D)
Qihoo-360 Win32/Trojan.Ransom.012

How to remove Win32/Kryptik.GBUU virus?

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.

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.GBUU 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.GBUU 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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