Win32/Kryptik.ARPJ

Written by Robert Bailey

What is Win32/Kryptik.ARPJ infection?

In this post you will locate regarding the interpretation of Win32/Kryptik.ARPJ and also its negative influence on your computer system. Such ransomware are a kind of malware that is specified by on the internet fraudulences to require paying the ransom by a victim.

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In the majority of the instances, Win32/Kryptik.ARPJ infection will instruct its victims to initiate funds transfer for the purpose of reducing the effects of the amendments that the Trojan infection has actually presented to the target’s device.

Win32/Kryptik.ARPJ Summary

These alterations 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);
  • Presents an Authenticode digital signature;
  • 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 attempted to delay the analysis task.;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • 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
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files situated on the sufferer’s hard drive — so the victim can no longer make use of the data;
  • Preventing regular accessibility to the target’s workstation;

Win32/Kryptik.ARPJ

One of the most common channels whereby Win32/Kryptik.ARPJ Ransomware Trojans are injected are:

  • By means of phishing emails;
  • As a repercussion of user winding up on a source that holds a harmful software application;

As quickly as the Trojan is effectively infused, it will either cipher the data on the victim’s computer or protect against the tool from functioning in a proper manner – while additionally placing a ransom money note that points out the requirement for the sufferers to effect the payment for the function of decrypting the documents or bring back the documents system back to the first condition. In the majority of instances, the ransom money note will show up when the client reboots the COMPUTER after the system has already been damaged.

Win32/Kryptik.ARPJ distribution networks.

In various corners of the globe, Win32/Kryptik.ARPJ grows by jumps and also bounds. Nevertheless, the ransom money notes and also techniques of obtaining the ransom money amount might differ depending upon specific neighborhood (regional) setups. The ransom money notes and methods of obtaining the ransom amount might vary depending on certain neighborhood (regional) setups.

Ransomware injection

For example:

    Faulty alerts regarding unlicensed software.

    In certain areas, the Trojans often wrongfully report having spotted some unlicensed applications made it possible for on the victim’s tool. The alert after that requires the customer to pay the ransom.

    Faulty statements concerning unlawful web content.

    In countries where software program piracy is much less prominent, this method is not as reliable for the cyber frauds. Conversely, the Win32/Kryptik.ARPJ popup alert might incorrectly claim to be deriving from a police institution and will report having situated child porn or other illegal information on the gadget.

    Win32/Kryptik.ARPJ popup alert might incorrectly assert to be obtaining from a legislation enforcement institution and also will certainly report having located youngster porn or various other illegal information on the tool. The alert will in a similar way have a demand for the customer to pay the ransom money.

Technical details

File Info:

crc32: AA1AC2FE
md5: 9de56ce9e4511cf5bc3369c9c8dd5a58
name: 9DE56CE9E4511CF5BC3369C9C8DD5A58.mlw
sha1: 4f19f83844c1f4c90d6909fbbdf5c7e682231774
sha256: dc9b438bc9cbd62ba8de17a8b53b1f821182260547ad57013f54437f97278865
sha512: 21a9618ae8b26f5a3abbd80c863b8f291f6bac8e6e15ac42b3818ca37f21f19be4b996f2276f1574f2103189ba46c681c29986b298bfeaa7764d94c5e62c8a8b
ssdeep: 768:RYYYq3SGZVm3bjUNezVhH4riAY0CyqD4ht9rlQgW8Q38iO5/C7In0R/RpR0JRg3m:t3S/3kN2hYrpYByP7LWU5/ZnnOGv
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: xa9 Microsoft Corporation. All rights reserved.
InternalName: PERFMON.EXE
FileVersion: 5.1.2600.5512 (xpsp.080413-2105)
CompanyName: Microsoft Corporation
ProductName: Microsoftxae Windowsxae Operating System
ProductVersion: 5.1.2600.5512
FileDescription: Performance Monitor Command Line Shell
OriginalFilename: PERFMON.EXE
Translation: 0x0409 0x04b0

Win32/Kryptik.ARPJ also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0040f26d1 )
Elastic malicious (high confidence)
DrWeb Trojan.MulDrop4.23426
Cynet Malicious (score: 100)
ALYac Trojan.Spy.Zbot.FCP
Cylance Unsafe
Zillya Trojan.Blocker.Win32.2716
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Ransom:Win32/Tobfy.2ef803c3
K7GW Trojan ( 0040f26d1 )
Cybereason malicious.9e4511
Cyren W32/Trojan.YGWP-8019
ESET-NOD32 a variant of Win32/Kryptik.ARPJ
Zoner Trojan.Win32.12798
TotalDefense Win32/Tobfy.AB
Avast Win32:Crypt-PJG [Trj]
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Trojan.Spy.Zbot.FCP
NANO-Antivirus Trojan.Win32.Drop.bgarib
MicroWorld-eScan Trojan.Spy.Zbot.FCP
Tencent Win32.Trojan.Falsesign.Hytp
Ad-Aware Trojan.Spy.Zbot.FCP
Sophos ML/PE-A + Mal/EncPk-AFX
Comodo Malware@#2fdlsqy0yreiz
BitDefenderTheta Gen:NN.ZexaF.34628.gu2@amvmPtei
VIPRE Virtool.Win32.Obfuscator.as!c (v)
TrendMicro TROJ_SIGEKAF.SM
McAfee-GW-Edition PWS-Zbot.gen.aua
FireEye Generic.mg.9de56ce9e4511cf5
Emsisoft Trojan.Spy.Zbot.FCP (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Generic.dwvqz
Webroot W32.Rogue.Gen
Avira HEUR/AGEN.1116600
eGambit PE.Heur.InvalidSig
Microsoft Ransom:Win32/Tobfy.N
AegisLab Trojan.Win32.Generic.4!c
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Trojan.Spy.Zbot.FCP
AhnLab-V3 Trojan/Win32.Blocker.R50721
McAfee PWS-Zbot.gen.aua
MAX malware (ai score=100)
VBA32 Hoax.Blocker
Malwarebytes MachineLearning/Anomalous.97%
Panda Trj/Hexas.HEU
TrendMicro-HouseCall TROJ_SIGEKAF.SM
Rising Ransom.Blocker!8.12A (CLOUD)
Ikarus Trojan.Win32.Tobfy
Fortinet W32/Zbot.DHN!tr
AVG Win32:Crypt-PJG [Trj]
Qihoo-360 Win32/Trojan.Zbot.HxQBEpsA

How to remove Win32/Kryptik.ARPJ ransomware?

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.ARPJ 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.ARPJ 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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