JS/TrojanDownloader.Nemucod.BH

What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is JS/TrojanDownloader.Nemucod.BH infection?

In this article you will locate about the definition of JS/TrojanDownloader.Nemucod.BH and also its negative influence on your computer. Such ransomware are a type of malware that is clarified by on the internet fraudulences to demand paying the ransom by a victim.

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In the majority of the instances, JS/TrojanDownloader.Nemucod.BH ransomware will advise its victims to launch funds move for the function of counteracting the amendments that the Trojan infection has presented to the victim’s device.

JS/TrojanDownloader.Nemucod.BH 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.
  • Attempts to connect to a dead IP:Port (1 unique times);
  • 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.
  • Performs some HTTP requests;
  • Checks for the presence of known windows from debuggers and forensic tools;
  • Attempts to execute a binary from a dead or sinkholed URL;
  • Behavior consistent with a dropper attempting to download the next stage.;
  • 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
  • A wscript.exe process commonly used in script or document file downloaders initiated network activity;
  • Detects VirtualBox through the presence of a registry key;
  • Ciphering the records found on the victim’s hard drive — so the target can no longer use the data;
  • Preventing normal accessibility to the target’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
www.mcnairyregionalems.com Trojan-Ransom.Script.Nemucod
alejandronaranjo.com Trojan-Ransom.Script.Nemucod
solviagens.com.br Trojan-Ransom.Script.Nemucod

JS/TrojanDownloader.Nemucod.BH

The most common channels through which JS/TrojanDownloader.Nemucod.BH are infused are:

  • By ways of phishing emails;
  • As a repercussion of individual winding up on a source that holds a harmful software program;

As quickly as the Trojan is efficiently infused, it will either cipher the data on the sufferer’s computer or protect against the gadget from functioning in an appropriate way – while also positioning a ransom note that points out the demand for the victims to effect the settlement for the purpose of decrypting the files or recovering the file system back to the initial condition. In many instances, the ransom note will come up when the customer reboots the PC after the system has actually currently been harmed.

JS/TrojanDownloader.Nemucod.BH distribution networks.

In numerous corners of the globe, JS/TrojanDownloader.Nemucod.BH expands by jumps as well as bounds. Nevertheless, the ransom money notes as well as techniques of extorting the ransom money quantity might differ relying on certain local (local) setups. The ransom money notes as well as tricks of obtaining the ransom amount might vary depending on certain neighborhood (local) setups.

Ransomware injection

For example:

    Faulty alerts concerning unlicensed software.

    In particular locations, the Trojans usually wrongfully report having found some unlicensed applications made it possible for on the sufferer’s device. The alert after that demands the individual to pay the ransom money.

    Faulty statements regarding prohibited content.

    In countries where software program piracy is much less prominent, this approach is not as efficient for the cyber scams. Additionally, the JS/TrojanDownloader.Nemucod.BH popup alert might wrongly claim to be deriving from a police institution and also will certainly report having situated youngster porn or various other unlawful information on the gadget.

    JS/TrojanDownloader.Nemucod.BH popup alert might incorrectly claim to be deriving from a regulation enforcement establishment as well as will report having situated child porn or various other unlawful data on the device. The alert will likewise have a need for the individual to pay the ransom money.

Technical details

File Info:

crc32: 7B98592B
md5: dc13a59bc6b6ce82f0fb01ee8d49c088
name: Delivery_Notification_00767726.zip
sha1: 9ca791988b76ff0d6929a95d2b6f8006ee9e1bd5
sha256: 3436a2dfe94aaa290435b27a710e9b40f1982ca8fcdbf036a8bb6bdd28cf76ba
sha512: e3a6c8ec02ba73e14efee670dc13aa4fb3e0ea51e143c46787e28809e7a94356e1bc23d44cf695e5891aab6cef8fdc86604cca98d6b6deb9e5360ca6b29f74a3
ssdeep: 48:9M8956+1oOlL8S7Mkn08EL0a7Jq/UnhsVVnkUDhrP09ndLO9FRy3yUyJi1gx:ie5zC28QjHyvhKVnlQb+Wsiux
type: Zip archive data, at least v2.0 to extract

Version Info:

0: [No Data]

JS/TrojanDownloader.Nemucod.BH also known as:

GridinSoft Trojan.Ransom.Gen
MicroWorld-eScan JS:Trojan.Downloader.Nemucod.G
FireEye JS:Trojan.Downloader.Nemucod.G
CAT-QuickHeal JS.Downloader.AG
McAfee JS/Nemucod.n
Zillya Downloader.Nemucod.JS.5
BitDefender JS:Trojan.Downloader.Nemucod.G
K7GW Trojan ( 004dfe6d1 )
K7AntiVirus Trojan ( 004dfe6d1 )
F-Prot JS/Downldr.DY!Eldorado
Symantec Trojan.Gen.NPE
Baidu JS.Trojan-Downloader.Nemucod.c
Avast JS:Downloader-CQP [Trj]
ClamAV Archive.Filetype.DualExtJS-6168221-2
GData Archive.Malware.FakeExt.T
Kaspersky Trojan-Downloader.JS.Agent.hif
Alibaba TrojanDownloader:JS/Obfuscator.4124b1bd
NANO-Antivirus Trojan.Script.Nemucod.easndf
Emsisoft JS:Trojan.Downloader.Nemucod.G (B)
Comodo TrojWare.JS.TrojanDownloader.Nemucod.JB@6ae5qm
F-Secure Malware.HTML/ExpKit.Gen2
DrWeb JS.DownLoader.1225
VIPRE Trojan-Downloader.JS.Nemucod.b (v)
McAfee-GW-Edition JS/Nemucod.n
Sophos Mal/DrodZp-A
Cyren JS/Downldr.DY!Eldorado
Avira HEUR/Suspar.Gen
MAX malware (ai score=88)
Antiy-AVL Trojan[Downloader]/JS.Nemucod.kk
Arcabit JS:Trojan.Downloader.Nemucod.G
ZoneAlarm Trojan-Downloader.JS.Agent.hif
Microsoft TrojanDownloader:JS/Nemucod.P
AhnLab-V3 JS/Obfus.Gen
ESET-NOD32 JS/TrojanDownloader.Nemucod.BH
Yandex Trojan.JDownloader.Gen.ACP
Ikarus Trojan-Ransom.Script.Nemucod
Fortinet JS/Nemucod.BF!tr
AVG JS:Downloader-CQP [Trj]
Qihoo-360 trojan.js.downloader.1

How to remove JS/TrojanDownloader.Nemucod.BH 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

The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

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 JS/TrojanDownloader.Nemucod.BH 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 JS/TrojanDownloader.Nemucod.BH 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/comparison

About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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