Win32/Kryptik.DXAO

Written by Robert Bailey

What is Win32/Kryptik.DXAO infection?

In this post you will certainly locate regarding the definition of Win32/Kryptik.DXAO and also its negative influence on your computer system. Such ransomware are a type of malware that is clarified by on-line frauds to require paying the ransom by a sufferer.

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Most of the situations, Win32/Kryptik.DXAO infection will certainly instruct its targets to launch funds move for the function of reducing the effects of the modifications that the Trojan infection has actually presented to the target’s gadget.

Win32/Kryptik.DXAO Summary

These alterations 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.
  • Compression (or decompression);
  • 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.
  • 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.

  • A process created a hidden window;
  • 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: Chinese (Singapore);
  • Uses Windows utilities for basic functionality;
  • Attempts to remove evidence of file being downloaded from the Internet;
  • Attempts to delete volume shadow copies;
  • Exhibits behavior characteristic of Alphacrypt/Teslacrypt ransomware;
  • 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
  • Exhibits possible ransomware file modification behavior;
  • Writes a potential ransom message to disk;
  • Attempts to identify installed AV products by registry key;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Creates a copy of itself;
  • 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 situated on the victim’s hard disk — so the sufferer can no more use the information;
  • Preventing regular access to the sufferer’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.DXAO

The most regular channels through which Win32/Kryptik.DXAO Ransomware Trojans are injected are:

  • By means of phishing e-mails;
  • As a consequence of user winding up on a source that hosts a destructive software;

As quickly as the Trojan is successfully injected, it will either cipher the information on the sufferer’s PC or avoid the device from functioning in an appropriate fashion – while also placing a ransom note that discusses the need for the targets to impact the settlement for the purpose of decrypting the files or recovering the data system back to the preliminary problem. In the majority of circumstances, the ransom money note will show up when the customer restarts the PC after the system has currently been harmed.

Win32/Kryptik.DXAO distribution channels.

In various edges of the globe, Win32/Kryptik.DXAO expands by leaps and also bounds. Nonetheless, the ransom notes as well as methods of extorting the ransom money amount may vary depending upon certain neighborhood (local) setups. The ransom notes and also techniques of extorting the ransom quantity might vary depending on specific neighborhood (regional) setups.

Ransomware injection

For example:

    Faulty informs regarding unlicensed software.

    In particular locations, the Trojans typically wrongfully report having detected some unlicensed applications enabled on the sufferer’s device. The sharp after that requires the customer to pay the ransom money.

    Faulty declarations concerning illegal content.

    In nations where software program piracy is less popular, this technique is not as reliable for the cyber frauds. Additionally, the Win32/Kryptik.DXAO popup alert may wrongly claim to be deriving from a police institution as well as will certainly report having situated kid pornography or various other prohibited information on the tool.

    Win32/Kryptik.DXAO popup alert might wrongly claim to be deriving from a regulation enforcement institution and will certainly report having situated youngster pornography or various other prohibited data on the device. The alert will in a similar way consist of a requirement for the individual to pay the ransom money.

Technical details

File Info:

crc32: 26D1C35D
md5: 075b54ba497d5563b221b30b139c159f
name: 075B54BA497D5563B221B30B139C159F.mlw
sha1: e14fa9ffbc01d9f9bad10701c0c15e0160a08562
sha256: 554c8bd941da8940587e7801d17b3beb46c77b955720e11f792a9e07c1b2d2b3
sha512: 3b067cc737a6acde6d2dc69483b1fd6373cc31c778bd5c6a3673292f71db5c9c1e5bf52f24460a0f88e6b09e6a237fbaa8b76febf6daf9ec038456ada8c2e0b5
ssdeep: 6144:sZRw74vj7voqVg5PcYkIvviARNbY7nI6hiLt0lzd8cS94PRnzlRRt:/UXHgly0visZYjthiLt0D8DSPRzf7
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Wellbalanced xa9 2011
InternalName: Undone
FileVersion: 103, 12, 81, 11
CompanyName: Ron Pedde
ProductName: Uncorrupted Uncouth
FileDescription: Animating
OriginalFilename: Arbitrate.exe

Win32/Kryptik.DXAO also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0055dd191 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.1694
MicroWorld-eScan Trojan.Cripack.Gen.1
CAT-QuickHeal Ransom.TeslaCrypt.WR4
Cylance Unsafe
Zillya Trojan.Kryptik.Win32.794010
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Tescrypt.4ce1c4af
K7GW Trojan ( 0055dd191 )
Cybereason malicious.a497d5
Symantec Ransom.TeslaCrypt
ESET-NOD32 a variant of Win32/Kryptik.DXAO
APEX Malicious
Avast Win32:TeslaCrypt-CS [Trj]
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Trojan.Cripack.Gen.1
NANO-Antivirus Trojan.Win32.MlwGen.dwykgf
ViRobot Trojan.Win32.Ransom.333714
SUPERAntiSpyware Trojan.Agent/Gen-Filecoder
Tencent Malware.Win32.Gencirc.114c7ad9
Ad-Aware Trojan.Cripack.Gen.1
Sophos ML/PE-A + Mal/Tinba-L
Comodo Malware@#2cnlszvv2hagq
BitDefenderTheta Gen:NN.ZexaF.34628.uq3@ai2LeThH
VIPRE Trojan.Win32.Generic!BT
TrendMicro TROJ_CRYPTESLA.YYSIH
McAfee-GW-Edition BehavesLike.Win32.PWSZbot.fc
FireEye Generic.mg.075b54ba497d5563
Emsisoft Trojan.Cripack.Gen.1 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Yakes.bgj
Webroot Trojan.Dropper.Gen
Avira HEUR/AGEN.1110475
Kingsoft Win32.Troj.Generic_a.a.(kcloud)
Microsoft Ransom:Win32/Tescrypt
Arcabit Trojan.Cripack.Gen.1
AegisLab Trojan.Win32.Generic.4!c
GData Trojan.Cripack.Gen.1
TACHYON Trojan/W32.Cryptodef.333714
AhnLab-V3 Trojan/Win32.Teslacrypt.C993648
McAfee RansomCWall-FAS!075B54BA497D
MAX malware (ai score=100)
VBA32 Trojan.Yakes
Panda Trj/Genetic.gen
TrendMicro-HouseCall TROJ_CRYPTESLA.YYSIH
Rising Ransom.Tescrypt!8.3AF (CLOUD)
Yandex Trojan.Kryptik!ZBJIjY7yHJY
Ikarus Trojan.Win32.Filecoder
Fortinet W32/Kryptik.EFAD!tr
AVG Win32:TeslaCrypt-CS [Trj]
Paloalto generic.ml
Qihoo-360 Win32/Ransom.Tescrypt.HxQBEpsA

How to remove Win32/Kryptik.DXAO 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.DXAO 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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Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Win32/Kryptik.DXAO 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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