Win32/Kryptik.HAVU

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

What is Win32/Kryptik.HAVU infection?

In this article you will find about the meaning of Win32/Kryptik.HAVU and also its negative impact on your computer system. Such ransomware are a kind of malware that is clarified by online scams to demand paying the ransom money by a sufferer.

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Most of the cases, Win32/Kryptik.HAVU ransomware will instruct its targets to start funds move for the function of counteracting the changes that the Trojan infection has introduced to the victim’s device.

Win32/Kryptik.HAVU Summary

These modifications 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.
  • 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.
  • 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.
  • Unconventionial language used in binary resources: Gaelic (Scottish);
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • 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 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 drive — so the victim can no more make use of the data;
  • 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.xyzRansom.Nemty
a.tomx.xyzRansom.Nemty

Win32/Kryptik.HAVU

The most typical networks whereby Win32/Kryptik.HAVU Ransomware are injected are:

  • By means of phishing e-mails;
  • As an effect of user winding up on a source that organizes a harmful software application;

As quickly as the Trojan is efficiently injected, it will certainly either cipher the data on the sufferer’s PC or avoid the gadget from functioning in a proper way – while additionally positioning a ransom money note that states the demand for the victims to impact the payment for the objective of decrypting the records or bring back the documents system back to the first problem. In the majority of instances, the ransom note will turn up when the customer restarts the COMPUTER after the system has already been damaged.

Win32/Kryptik.HAVU distribution networks.

In various corners of the world, Win32/Kryptik.HAVU expands by leaps and bounds. However, the ransom money notes and also tricks of extorting the ransom quantity might differ depending on certain neighborhood (regional) settings. The ransom notes as well as methods of obtaining the ransom money amount may vary depending on particular neighborhood (regional) setups.

Ransomware injection

For example:

    Faulty signals regarding unlicensed software.

    In certain locations, the Trojans commonly wrongfully report having actually found some unlicensed applications enabled on the target’s gadget. The sharp then demands the customer to pay the ransom money.

    Faulty statements concerning prohibited content.

    In countries where software program piracy is less prominent, this method is not as effective for the cyber frauds. Additionally, the Win32/Kryptik.HAVU popup alert might incorrectly declare to be originating from a law enforcement establishment and will report having located kid pornography or other prohibited information on the gadget.

    Win32/Kryptik.HAVU popup alert might wrongly declare to be acquiring from a law enforcement establishment and will certainly report having situated youngster porn or various other unlawful data on the gadget. The alert will in a similar way consist of a requirement for the user to pay the ransom.

Technical details

File Info:

crc32: 963D688D
md5: 9e4aeac6c7b58323b6df2362feb27c85
name: client.exe
sha1: 0ce4c976190734ce71965bddab99914e02c7694a
sha256: 8daecdb914b16e078bdd8d51956f0816b53c3e8e2e1ca7b53397da976d5d7262
sha512: 37273235587609990cb920817b7decfbd15b9d62551c2e51481b982f27bcb28e2b9ed8af8fb8f99169369fff5159f55c8f5b5f954a765fb510a2904e09b7382b
ssdeep: 12288:HzjXtPU3r+9cyvbapWnFB8Y1zmpN0koOpFB:fBKt46SFGWmmt
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (C) 2019, tail
InternalServiceName: sfsgvsdg.exe
FileVersion: 5.3.4

Win32/Kryptik.HAVU also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetectVM.malware
DrWebTrojan.MulDrop11.37949
MicroWorld-eScanTrojan.GenericKD.33039728
FireEyeGeneric.mg.9e4aeac6c7b58323
Qihoo-360Generic/HEUR/QVM10.2.0943.Malware.Gen
McAfeeArtemis!9E4AEAC6C7B5
SangforMalware
BitDefenderTrojan.GenericKD.33039728
CrowdStrikewin/malicious_confidence_100% (W)
BitDefenderThetaGen:NN.ZexaF.34084.BC0@a4qLUueG
SymantecRansom.Nemty
APEXMalicious
GDataWin32.Packed.Kryptik.79JZ97
KasperskyTrojan-Dropper.Win32.Scrop.aapb
Endgamemalicious (high confidence)
F-SecureTrojan.TR/AD.ClipBanker.ocm
Invinceaheuristic
McAfee-GW-EditionBehavesLike.Win32.PUPXFQ.gc
Trapminemalicious.moderate.ml.score
EmsisoftTrojan.GenericKD.33039728 (B)
SentinelOneDFI – Malicious PE
WebrootW32.Trojan.Gen
AviraTR/AD.ClipBanker.ocm
MicrosoftTrojan:Win32/Wacatac.D!ml
ArcabitTrojan.Generic.D1F82570
ZoneAlarmUDS:DangerousObject.Multi.Generic
AhnLab-V3Trojan/Win32.MalPe.R325425
Acronissuspicious
MAXmalware (ai score=86)
Ad-AwareTrojan.GenericKD.33039728
MalwarebytesTrojan.MalPack.GS
ESET-NOD32a variant of Win32/Kryptik.HAVU
RisingBackdoor.Tofsee!8.1E9 (TFE:dGZlOgamSwHqxu4CjA)
IkarusTrojan.Win32.Krypt
FortinetW32/Kryptik.HAVL!tr
AVGFileRepMalware
Paloaltogeneric.ml

How to remove Win32/Kryptik.HAVU 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 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.HAVU 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.HAVU 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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