Trojan:Win32/Gataka.D

Written by Robert Bailey

What is Trojan:Win32/Gataka.D infection?

In this article you will certainly find concerning the definition of Trojan:Win32/Gataka.D and its adverse effect on your computer system. Such ransomware are a form of malware that is clarified by on the internet fraudulences to demand paying the ransom by a victim.

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Most of the situations, Trojan:Win32/Gataka.D ransomware will advise its targets to initiate funds move for the purpose of counteracting the amendments that the Trojan infection has actually presented to the sufferer’s gadget.

Trojan:Win32/Gataka.D Summary

These adjustments can be as adheres to:

  • 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 with CreateRemoteThread in a remote process;
  • 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.
  • 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.
  • Code injection with CreateRemoteThread in a remote process;
  • Deletes its original binary from disk;
  • 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;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records found on the target’s hard disk — so the target can no longer utilize the data;
  • Preventing routine 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.
Similar behavior
Related domains
z.whorecord.xyz Trojan.Win32.Ransom
a.tomx.xyz Trojan.Win32.Ransom

Trojan:Win32/Gataka.D

One of the most typical networks where Trojan:Win32/Gataka.D are infused are:

  • By means of phishing emails;
  • As a consequence of customer winding up on a resource that hosts a harmful software application;

As soon as the Trojan is successfully injected, it will certainly either cipher the information on the victim’s PC or stop the device from functioning in a proper way – while additionally placing a ransom money note that points out the need for the victims to effect the repayment for the purpose of decrypting the records or recovering the file system back to the initial problem. In the majority of circumstances, the ransom money note will turn up when the customer restarts the PC after the system has currently been damaged.

Trojan:Win32/Gataka.D distribution channels.

In different edges of the world, Trojan:Win32/Gataka.D grows by leaps as well as bounds. However, the ransom notes as well as techniques of extorting the ransom money quantity may differ relying on certain regional (regional) settings. The ransom notes and techniques of extorting the ransom money quantity may differ depending on particular neighborhood (regional) settings.

Ransomware injection

For instance:

    Faulty informs regarding unlicensed software application.

    In specific areas, the Trojans usually wrongfully report having actually found some unlicensed applications made it possible for on the victim’s device. The sharp then requires the user to pay the ransom.

    Faulty statements regarding illegal web content.

    In nations where software application piracy is much less popular, this method is not as effective for the cyber scams. Alternatively, the Trojan:Win32/Gataka.D popup alert might wrongly declare to be deriving from a police organization as well as will report having situated child pornography or various other illegal information on the device.

    Trojan:Win32/Gataka.D popup alert might incorrectly assert to be obtaining from a regulation enforcement institution and also will certainly report having located kid porn or other illegal information on the gadget. The alert will similarly consist of a demand for the user to pay the ransom money.

Technical details

File Info:

crc32: 68DB2A4E
md5: 8720513bb46d2deec572cfe5962f2eb8
name: 8720513BB46D2DEEC572CFE5962F2EB8.mlw
sha1: 3add125059e1b7c37d888caee023e12829dd1dc1
sha256: 65b69f6e361751aa86a4e67b55aa97aba55bf9900e977ea0bf69e578e5851610
sha512: d98e532372e8858268d5bfb3abe34de22231c1b66f3059b8fa93904d50f5cb0d9d9329d37d52bb67e0a2a288e3ff3770af62b192a3d871aea44ac1edeaec2f76
ssdeep: 3072:X2nwqQvQ4MvM/BKc8M0mDr5C1bQuGhwhGEjE+8fV3SKPZAufKmkVdFDXN12E2:315sDmDrkQuoMG6EhfsCZAuimk1N4z
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan:Win32/Gataka.D also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Trojan ( 003778d21 )
Elastic malicious (high confidence)
DrWeb BackDoor.Hermes.235
Cynet Malicious (score: 100)
ALYac Gen:Heur.Cridex.2
Cylance Unsafe
Zillya Trojan.Gataka.Win32.54
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_60% (D)
K7GW Trojan ( 003778d21 )
Cybereason malicious.bb46d2
Symantec ML.Attribute.HighConfidence
ESET-NOD32 Win32/Gataka.B
APEX Malicious
Avast FileRepMetagen [Rtk]
Kaspersky UDS:DangerousObject.Multi.Generic
BitDefender Gen:Heur.Cridex.2
NANO-Antivirus Trojan.Win32.Hermes.xedex
ViRobot Trojan.Win32.A.Zbot.210944.BJ
MicroWorld-eScan Gen:Heur.Cridex.2
Tencent Win32.Trojan-Spy.Zbot.bzem
Ad-Aware Gen:Heur.Cridex.2
Sophos Mal/Generic-S
Comodo Malware@#3ptmylrdjysiq
BitDefenderTheta Gen:NN.ZexaF.34688.mqW@aarJ2aoc
VIPRE Trojan.Win32.Generic!BT
TrendMicro TROJ_GATAKA_BK0843DC.TOMC
McAfee-GW-Edition BehavesLike.Win32.ZBot.dc
FireEye Generic.mg.8720513bb46d2dee
Emsisoft Gen:Heur.Cridex.2 (B)
SentinelOne Static AI – Malicious PE
Jiangmin TrojanSpy.Zbot.bvar
Webroot W32.Malware.Gen
Avira TR/Crypt.ZPACK.Gen2
eGambit Unsafe.AI_Score_89%
Antiy-AVL Trojan/Generic.ASMalwS.E8FFB9
Microsoft Trojan:Win32/Gataka.D
AegisLab Trojan.Win32.Zbot.l!c
GData Gen:Heur.Cridex.2
AhnLab-V3 Trojan/Win32.Tatanarg.C232831
Acronis suspicious
McAfee PWS-Zbot.gen.afv
MAX malware (ai score=81)
VBA32 BScope.TrojanPSW.Panda
Panda Trj/Pacrypt.AE
TrendMicro-HouseCall TROJ_GATAKA_BK0843DC.TOMC
Rising Trojan.Win32.Generic.13057402 (C64:YzY0On64hjmBW6f/)
Yandex TrojanSpy.Zbot!4Zu3D3kTx2w
Ikarus Trojan.Win32.Ransom
Fortinet W32/Zbot.ASJ!tr
AVG FileRepMetagen [Rtk]
Paloalto generic.ml

How to remove Trojan:Win32/Gataka.D 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 Trojan:Win32/Gataka.D 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 Trojan:Win32/Gataka.D 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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