Backdoor:Win32/Zegost.BX

Written by Robert Bailey

What is Backdoor:Win32/Zegost.BX infection?

In this article you will find regarding the meaning of Backdoor:Win32/Zegost.BX and also its negative effect on your computer. Such ransomware are a form of malware that is elaborated by online fraudulences to require paying the ransom by a sufferer.

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In the majority of the situations, Backdoor:Win32/Zegost.BX infection will advise its targets to start funds transfer for the objective of neutralizing the modifications that the Trojan infection has actually introduced to the target’s gadget.

Backdoor:Win32/Zegost.BX Summary

These adjustments 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.
  • A process attempted to delay the analysis task.;
  • Expresses interest in specific running processes;
  • 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.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Attempts to repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
  • 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;
  • Ciphering the documents located on the target’s hard disk drive — so the target can no more use the information;
  • Preventing normal 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.
Similar behavior
Related domains
21shequ.f3322.net W32/Filecoder.FV!tr.ransom

Backdoor:Win32/Zegost.BX

The most regular networks where Backdoor:Win32/Zegost.BX Ransomware are injected are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As a consequence of user winding up on a resource that hosts a destructive software;

As quickly as the Trojan is effectively infused, it will either cipher the data on the victim’s PC or prevent the gadget from working in an appropriate fashion – while also placing a ransom money note that points out the need for the targets to impact the payment for the objective of decrypting the files or restoring the documents system back to the first problem. In most instances, the ransom money note will come up when the client reboots the COMPUTER after the system has actually already been harmed.

Backdoor:Win32/Zegost.BX circulation networks.

In various corners of the globe, Backdoor:Win32/Zegost.BX grows by jumps and bounds. However, the ransom notes as well as tricks of obtaining the ransom quantity might differ depending on specific local (regional) setups. The ransom money notes and techniques of extorting the ransom amount might vary depending on certain regional (regional) setups.

Ransomware injection

As an example:

    Faulty notifies regarding unlicensed software application.

    In certain areas, the Trojans frequently wrongfully report having actually detected some unlicensed applications enabled on the sufferer’s device. The sharp after that demands the customer to pay the ransom.

    Faulty statements regarding unlawful material.

    In countries where software piracy is less preferred, this method is not as effective for the cyber scams. Alternatively, the Backdoor:Win32/Zegost.BX popup alert might incorrectly declare to be stemming from a police institution and also will certainly report having located kid pornography or various other illegal information on the gadget.

    Backdoor:Win32/Zegost.BX popup alert might incorrectly assert to be acquiring from a law enforcement organization and will report having located child pornography or various other illegal information on the gadget. The alert will in a similar way include a need for the customer to pay the ransom money.

Technical details

File Info:

crc32: FF03CDF2
md5: da2803c74940ae530da1927ad706b899
name: DA2803C74940AE530DA1927AD706B899.mlw
sha1: 572c61b7cec7f3eb82d72e909b1d86922750fe49
sha256: 44c19b2d92be7d477a75e9542c76efc923028a346b87521db00dd74852ab89b3
sha512: 455b3273aa1125d393284ba41933d312052669a91f6f126a014bb6d8e238858c64c82152a4273263df255d43eb4ae36f24a70e392cd2dfb3bf7bb798a593ccb6
ssdeep: 6144:nsbFwCV80icygeaWpcE0pwpMr0EMmHSDxMqB+sI6PPFA6G:wN+0ygeaWJ0ppSdCI3tP
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Backdoor:Win32/Zegost.BX also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0052c8a31 )
Elastic malicious (high confidence)
DrWeb Trojan.KeyLogger.17822
Cynet Malicious (score: 100)
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Backdoor:Win32/Jorik.d6cdc1b7
K7GW Trojan ( 0052c8a31 )
Cybereason malicious.7cec7f
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Farfli.AOX
APEX Malicious
Avast Win32:Dropper-BKV [Trj]
ClamAV Win.Dropper.Ramnit-7076131-0
Kaspersky Trojan.Win32.Jorik.Zegost.kbn
NANO-Antivirus Virus.Win32.Gen-Crypt.ccnc
Tencent Win32.Trojan.Jorik.Wqwm
Sophos ML/PE-A + Mal/ResDro-B
BitDefenderTheta Gen:NN.ZexaF.34690.tuW@a8yvlNj
VIPRE Trojan-Dropper.Win32.Resdro.b (v) (not malicious)
McAfee-GW-Edition BehavesLike.Win32.Generic.fc
FireEye Generic.mg.da2803c74940ae53
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/Jorik.gpdi
Avira HEUR/AGEN.1121023
eGambit Unsafe.AI_Score_56%
Microsoft Backdoor:Win32/Zegost.BX
AhnLab-V3 Trojan/Win32.Jorik.C258473
Acronis suspicious
McAfee BackDoor-EXZ
VBA32 BScope.Trojan.StartServ
Malwarebytes Malware.AI.1895176982
Rising Trojan.Jorik!8.1968 (CLOUD)
Ikarus Backdoor.Win32.Rbot
Fortinet W32/Filecoder.FV!tr.ransom
AVG Win32:Dropper-BKV [Trj]
Paloalto generic.ml

How to remove Backdoor:Win32/Zegost.BX 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 Backdoor:Win32/Zegost.BX 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 Backdoor:Win32/Zegost.BX 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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