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

What is BAT/KillAll.NBJ infection?

In this post you will find concerning the definition of BAT/KillAll.NBJ and also its adverse impact on your computer. Such ransomware are a kind of malware that is elaborated by on the internet fraudulences to demand paying the ransom money by a target.

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In the majority of the cases, BAT/KillAll.NBJ infection will certainly instruct its targets to initiate funds transfer for the objective of reducing the effects of the modifications that the Trojan infection has actually introduced to the target’s tool.

BAT/KillAll.NBJ Summary

These modifications can be as follows:

  • A process created a hidden window;
  • Uses Windows utilities for basic functionality;
  • 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;
  • Creates a hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • 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.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the documents situated on the target’s hard disk drive — so the victim can no more make use of the data;
  • Preventing normal access 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


The most common channels through which BAT/KillAll.NBJ Ransomware Trojans are injected are:

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

As quickly as the Trojan is effectively injected, it will either cipher the information on the victim’s PC or avoid the gadget from functioning in a correct way – while also placing a ransom note that discusses the demand for the victims to impact the repayment for the objective of decrypting the documents or bring back the data system back to the first condition. In a lot of circumstances, the ransom money note will certainly turn up when the customer restarts the PC after the system has currently been damaged.

BAT/KillAll.NBJ distribution channels.

In various corners of the globe, BAT/KillAll.NBJ expands by jumps as well as bounds. Nevertheless, the ransom notes and tricks of obtaining the ransom quantity might vary relying on certain neighborhood (regional) settings. The ransom notes as well as methods of obtaining the ransom money amount might vary depending on particular neighborhood (regional) settings.

Ransomware injection

For example:

    Faulty informs regarding unlicensed software.

    In particular areas, the Trojans frequently wrongfully report having spotted some unlicensed applications allowed on the victim’s tool. The sharp after that requires the customer to pay the ransom.

    Faulty declarations regarding unlawful web content.

    In nations where software application piracy is much less popular, this method is not as reliable for the cyber frauds. Additionally, the BAT/KillAll.NBJ popup alert may falsely declare to be stemming from a police establishment and also will certainly report having located youngster pornography or other prohibited data on the gadget.

    BAT/KillAll.NBJ popup alert might incorrectly declare to be acquiring from a legislation enforcement organization and will certainly report having located kid pornography or other illegal data on the gadget. The alert will in a similar way contain a requirement for the individual to pay the ransom money.

Technical details

File Info:

crc32: 1EF9C637
md5: 8a439d8cdcd290d0504125785b7d9efc
name: 8A439D8CDCD290D0504125785B7D9EFC.mlw
sha1: 4d2b7f93658cf5f0879164eacab63abb25c9833d
sha256: 9b78b76e75d348d30d618a1d3b86f93743a040a6c763b22dfebce9e40316585f
sha512: 0b8034546c77370588a8f3526c9c0561f82fd82f8aa80ef82faae9b4d156060d2a10c5dd87e62893028309ddcf4e1cb3c6d593c23b3bc110fd994a860312137e
ssdeep: 1536:Y7f9h0UPJP/CpICdikMLMLv5PFNg1qrX+VIOlnToIfrgIxW:2liUPXC8k1nJrX+fNTBfXo
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

BAT/KillAll.NBJ also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Riskware ( 0040eff71 )
Elastic malicious (high confidence)
Cynet Malicious (score: 100)
CAT-QuickHeal PUA.BitcoinminerPMF.S17319620
ALYac Trojan.GenericKD.46276709
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_90% (W)
K7GW Riskware ( 0040eff71 )
Cybereason malicious.3658cf
Cyren W32/Trojan.IUNU-0892
Symantec ML.Attribute.HighConfidence
Zoner Trojan.Win32.73853
APEX Malicious
Avast FileRepMalware
Kaspersky HEUR:Trojan.Win32.KillFiles
BitDefender Trojan.GenericKD.46276709
MicroWorld-eScan Trojan.GenericKD.46276709
Ad-Aware Trojan.GenericKD.46276709
Sophos Generic PUA EN (PUA)
Emsisoft Trojan.GenericKD.46276709 (B)
Jiangmin Trojan.PowerShell.ev
Webroot W32.Trojan.Gen
Microsoft Trojan:Win32/Tiggre!rfn
Gridinsoft Trojan.Win32.CoinMiner.vb!s1
AegisLab Trojan.Win32.KillFiles.4!c
GData Win32.Trojan.PSE.1QE286O
TACHYON Trojan/W32.Agent.88576.XX
Acronis suspicious
McAfee Artemis!8A439D8CDCD2
MAX malware (ai score=81)
Malwarebytes RiskWare.BitCoinMiner
TrendMicro-HouseCall TROJ_GEN.R005H07E921
Rising Trojan.KillFiles!8.6C1 (CLOUD)
Ikarus Trojan.BAT.KillAll
MaxSecure Trojan.Malware.300983.susgen
Fortinet PossibleThreat.PALLASNET.H
AVG FileRepMalware

How to remove BAT/KillAll.NBJ virus?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
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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 BAT/KillAll.NBJ 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 BAT/KillAll.NBJ you can always ask me in the comments for getting help.

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  1. GridinSoft Anti-Malware Review from HowToFix site:
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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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