Win32/Kryptik.NHJ

Written by Robert Bailey

What is Win32/Kryptik.NHJ infection?

In this post you will locate regarding the definition of Win32/Kryptik.NHJ as well as its adverse effect on your computer. Such ransomware are a form of malware that is clarified by on the internet fraudulences to demand paying the ransom by a victim.

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 | GridinSoft

Most of the situations, Win32/Kryptik.NHJ virus will certainly instruct its victims to launch funds transfer for the objective of neutralizing the modifications that the Trojan infection has introduced to the victim’s tool.

Win32/Kryptik.NHJ 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.
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • 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.

  • Unconventionial language used in binary resources: Russian;
  • 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;
  • 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
  • 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;
  • Ciphering the files located on the victim’s disk drive — so the sufferer can no more utilize the data;
  • Preventing normal 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.NHJ

The most common networks through which Win32/Kryptik.NHJ Ransomware Trojans are infused are:

  • By ways of phishing emails;
  • As a consequence of user ending up on a source that holds a destructive software application;

As soon as the Trojan is efficiently infused, it will certainly either cipher the information on the victim’s PC or avoid the device from working in a correct fashion – while also positioning a ransom money note that states the demand for the targets to effect the settlement for the purpose of decrypting the records or recovering the documents system back to the preliminary problem. In a lot of circumstances, the ransom note will certainly turn up when the customer reboots the COMPUTER after the system has already been damaged.

Win32/Kryptik.NHJ distribution networks.

In numerous corners of the world, Win32/Kryptik.NHJ expands by jumps and bounds. Nevertheless, the ransom notes as well as methods of obtaining the ransom quantity may differ relying on specific local (regional) settings. The ransom money notes as well as techniques of extorting the ransom amount might vary depending on certain regional (local) settings.

Ransomware injection

For example:

    Faulty signals concerning unlicensed software application.

    In certain locations, the Trojans usually wrongfully report having spotted some unlicensed applications made it possible for on the target’s gadget. The sharp then demands the customer to pay the ransom.

    Faulty statements concerning illegal web content.

    In nations where software piracy is less popular, this technique is not as reliable for the cyber scams. Additionally, the Win32/Kryptik.NHJ popup alert might wrongly assert to be deriving from a police establishment and will report having situated youngster porn or other illegal data on the device.

    Win32/Kryptik.NHJ popup alert may wrongly declare to be deriving from a law enforcement establishment and also will report having located kid pornography or various other unlawful data on the tool. The alert will in a similar way include a requirement for the user to pay the ransom.

Technical details

File Info:

crc32: A7AF02EE
md5: 81f61d9fd2ad8bd1fad508e957518839
name: 81F61D9FD2AD8BD1FAD508E957518839.mlw
sha1: 6c77385c26c8c569b203df7fe657c9678a876c43
sha256: 9dda0718d6da24ab52256abaf47006bc74fa7f284af4e6d4f90287debf93d86f
sha512: e4b1ec88d2241b14ae8ffbb37010db2e12f8903e47da34bc3f3dfccf9776410531b119aa76c904e3c2bcb57e93a50a51e36deab948ebfa4a2222acd3b41063ac
ssdeep: 384:xcNwd4My74RZXZzsYgxAgjCVpP9SXNz69fEqhX8r/dcUcR01GHSFwmJnVc0:u4RZp4lljCV9kufdS/dcUxBNVc
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

LegalCopyright: Copyright (C) 2011 Heaventools Software
InternalName: Hostex.exe
FileVersion: 3.4.33.13
CompanyName: BitDefender
ProductName: Hostex Controller
ProductVersion: 3.4.33.13
FileDescription: Hostex Controller
OriginalFilename: Hostex.exe
Translation: 0x0810 0x04b0

Win32/Kryptik.NHJ also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 00274f891 )
DrWeb Trojan.Fakealert.22531
Cynet Malicious (score: 100)
ALYac Gen:Heur.FKP.1
Cylance Unsafe
Zillya Trojan.PornoAsset.Win32.80
Alibaba Ransom:Win32/Trasbind.e1135ae4
K7GW Trojan ( 00274f891 )
Cybereason malicious.fd2ad8
Cyren W32/Ransom.O.gen!Eldorado
ESET-NOD32 a variant of Win32/Kryptik.NHJ
APEX Malicious
Avast FileRepMetagen [Malware]
Kaspersky UDS:DangerousObject.Multi.Generic
BitDefender Gen:Heur.FKP.1
NANO-Antivirus Trojan.Win32.PornoAsset.djuqs
MicroWorld-eScan Gen:Heur.FKP.1
Tencent Win32.Trojan.Ransom.Ebqs
Ad-Aware Gen:Heur.FKP.1
Sophos Mal/FakeAV-LX
Comodo Suspicious@#3npy48daand3v
BitDefenderTheta Gen:NN.ZexaF.34690.bmKfayjnsmec
VIPRE Trojan.Win32.Generic!SB.0
TrendMicro TROJ_RANSOM.SMAY
McAfee-GW-Edition BehavesLike.Win32.Firseria.mc
FireEye Generic.mg.81f61d9fd2ad8bd1
Emsisoft Gen:Heur.FKP.1 (B)
SentinelOne Static AI – Malicious PE
Webroot W32.Malware.Gen
Avira TR/Crypt.XPACK.Gen
Antiy-AVL Trojan/Generic.ASMalwS.97C15C
Microsoft Ransom:Win32/Trasbind.A
Arcabit Trojan.FKP.1
AegisLab Trojan.Win32.PornoAsset.j!c
GData Gen:Heur.FKP.1
McAfee Artemis!81F61D9FD2AD
MAX malware (ai score=100)
VBA32 BScope.Trojan-Dropper.Injector
Malwarebytes Spyware.PasswordStealer.XGen
Panda Generic Malware
TrendMicro-HouseCall TROJ_RANSOM.SMAY
Rising Ransom.Trasbind!8.292E (CLOUD)
Yandex Trojan.PornoAsset!A8rAYmtal9M
Ikarus Trojan.Win32.Ransom
MaxSecure Trojan.Malware.2289916.susgen
Fortinet W32/Generic.AC.2A78CA!tr
AVG FileRepMetagen [Malware]

How to remove Win32/Kryptik.NHJ 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.NHJ 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.NHJ 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/products/

About the author

Robert Bailey

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

Leave a Reply

Sending

This site uses Akismet to reduce spam. Learn how your comment data is processed.