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

What is JS.Nemucod.BGF infection?

In this article you will certainly find concerning the interpretation of JS.Nemucod.BGF and its adverse influence on your computer. Such ransomware are a form of malware that is clarified by on-line frauds to require paying the ransom money by a sufferer.

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In the majority of the situations, JS.Nemucod.BGF ransomware will instruct its targets to launch funds transfer for the purpose of counteracting the amendments that the Trojan infection has introduced to the sufferer’s device.

JS.Nemucod.BGF Summary

These modifications can be as adheres to:

  • Injection (inter-process);
  • Uses Windows utilities for basic functionality;
  • A potential decoy document was displayed to the user;
  • 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.
  • Ciphering the files situated on the sufferer’s hard disk — so the victim can no more make use of the information;
  • 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.


The most common networks whereby JS.Nemucod.BGF Ransomware Trojans are infused are:

  • By means of phishing emails;
  • As a consequence of individual ending up on a source that organizes a malicious software;

As soon as the Trojan is efficiently infused, it will either cipher the data on the victim’s computer or avoid the device from working in an appropriate fashion – while likewise positioning a ransom money note that mentions the requirement for the sufferers to effect the settlement for the function of decrypting the files or restoring the data system back to the initial condition. In the majority of circumstances, the ransom note will turn up when the client reboots the PC after the system has currently been damaged.

JS.Nemucod.BGF circulation channels.

In various edges of the globe, JS.Nemucod.BGF grows by jumps and bounds. However, the ransom notes and also methods of obtaining the ransom quantity might differ relying on certain regional (regional) setups. The ransom money notes and also tricks of obtaining the ransom amount may vary depending on certain regional (local) setups.

Ransomware injection

As an example:

    Faulty informs about unlicensed software.

    In particular areas, the Trojans usually wrongfully report having actually found some unlicensed applications enabled on the victim’s gadget. The alert after that demands the customer to pay the ransom money.

    Faulty declarations regarding unlawful web content.

    In nations where software application piracy is less popular, this technique is not as efficient for the cyber frauds. Additionally, the JS.Nemucod.BGF popup alert may incorrectly claim to be stemming from a law enforcement establishment and will certainly report having situated youngster porn or other unlawful information on the device.

    JS.Nemucod.BGF popup alert might falsely assert to be deriving from a law enforcement establishment as well as will report having situated child porn or various other illegal data on the device. The alert will likewise consist of a demand for the individual to pay the ransom.

Technical details

File Info:

crc32: F6826D5B
md5: 56aa6e647d9b3ab45f91c0e1e8a9367c
name: upload_file
sha1: 682b3ccdd78e1f298d646fb772fcc4a66b0b2e15
sha256: 7f683354cdac7b15ff6ba318be83d7f361b12040052a8b6fecc6dea53b57f5e2
sha512: 4bda477cff1fbbb8c13cc9afad9b64b3893f7b6716b99c68aed55ad0bf7f5aee14ff246041ab43754c8ab12d2f1f083f1328fb86a784bbb918525d3ba26a4040
ssdeep: 1536:XetJKPfEk3WshXHxOHpeXbxECnsjWxFMHt6rBOGqdRuKpcTISBZO:XQJEL3WshXwJeWCsCxF+t4BO7v6HO
type: ASCII text, with very long lines, with no line terminators

Version Info:

0: [No Data]

JS.Nemucod.BGF also known as:

EmsisoftGen:Variant.Ransom.Samas.9 (B)
MAXmalware (ai score=89)

How to remove JS.Nemucod.BGF 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.Nemucod.BGF 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 JS.Nemucod.BGF you can always ask me in the comments for getting help.

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  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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