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

What is Backdoor.MSIL.NanoBot infection?

In this post you will certainly find regarding the definition of Backdoor.MSIL.NanoBot and its unfavorable influence on your computer. Such ransomware are a form of malware that is elaborated by online frauds to require paying the ransom by a victim.

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Most of the cases, Backdoor.MSIL.NanoBot virus will certainly instruct its victims to start funds transfer for the function of neutralizing the amendments that the Trojan infection has actually introduced to the victim’s gadget.

Backdoor.MSIL.NanoBot Summary

These alterations can be as follows:

  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • 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 located on the sufferer’s disk drive — so the sufferer can no more utilize the information;
  • 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.


The most regular networks whereby Backdoor.MSIL.NanoBot Trojans are injected are:

  • By ways of phishing emails;
  • As an effect of individual ending up on a source that hosts a harmful software;

As soon as the Trojan is effectively infused, it will either cipher the data on the target’s computer or protect against the tool from functioning in a proper way – while likewise placing a ransom note that points out the requirement for the sufferers to impact the settlement for the function of decrypting the papers or bring back the file system back to the first problem. In a lot of circumstances, the ransom note will show up when the customer reboots the PC after the system has actually already been damaged.

Backdoor.MSIL.NanoBot distribution channels.

In various corners of the world, Backdoor.MSIL.NanoBot expands by leaps and also bounds. Nevertheless, the ransom money notes as well as techniques of extorting the ransom money quantity may vary depending upon certain neighborhood (local) setups. The ransom notes and also techniques of obtaining the ransom amount may vary depending on certain local (local) settings.

Ransomware injection

As an example:

    Faulty notifies concerning unlicensed software.

    In specific locations, the Trojans typically wrongfully report having identified some unlicensed applications enabled on the sufferer’s device. The sharp then requires the user to pay the ransom money.

    Faulty declarations regarding prohibited material.

    In nations where software application piracy is much less popular, this technique is not as effective for the cyber fraudulences. Conversely, the Backdoor.MSIL.NanoBot popup alert might falsely assert to be deriving from a police institution and also will certainly report having located kid pornography or various other unlawful information on the tool.

    Backdoor.MSIL.NanoBot popup alert may wrongly declare to be obtaining from a regulation enforcement institution and also will report having situated youngster pornography or various other illegal information on the device. The alert will in a similar way consist of a requirement for the individual to pay the ransom.

Technical details

File Info:

crc32: C01C3532
md5: 69ba715038c91aaa69320411cce05b0c
name: 69BA715038C91AAA69320411CCE05B0C.mlw
sha1: db32081e67f4f7d25754d5a6c44185175df3d30a
sha256: e0877fb197acdc9b354fa9c982530f35ceea0c72fb51d37f36dd8caa89448274
sha512: afa1c016ae3f2c31552a43446a4de9225079e0c3e759b2804dad8f9259a7012ebfb658ac2529a6057789671293673871229b6898f626a5584cba5dc2badd23be
ssdeep: 12288:9jxpnnE3D642bDAZ/cQ3i2980pCXP7wCqgN1VSet6+:9jLnET642vBr29Z7wt6+
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: Copyright xa9 2019
Assembly Version:
InternalName: NPmb.exe
ProductName: WindowsFormsApplication1
FileDescription: WindowsFormsApplication1
OriginalFilename: NPmb.exe

Backdoor.MSIL.NanoBot also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Riskware ( 0040eff71 )
DrWeb Trojan.Inject4.12465
Cynet Malicious (score: 100)
ALYac Spyware.AgentTesla
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_60% (W)
K7GW Riskware ( 0040eff71 )
Cyren W32/MSIL_Kryptik.EMC.gen!Eldorado
Symantec Trojan.Gen.2
APEX Malicious
Avast Win32:RansomX-gen [Ransom]
Kaspersky HEUR:Backdoor.MSIL.NanoBot.gen
BitDefender Trojan.GenericKD.37064961
MicroWorld-eScan Trojan.GenericKD.37064961
Ad-Aware ATI:AgentTesla.D29772BE
Sophos Mal/Generic-S
Comodo TrojWare.Win32.Agent.gimuy@0
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition Artemis!Trojan
FireEye Trojan.GenericKD.37064961
Emsisoft Trojan.GenericKD.37064961 (B)
SentinelOne Static AI – Suspicious PE
Webroot W32.Trojan.Gen
Avira TR/AD.AgentTesla.axzdz
Kingsoft Win32.Hack.Undef.(kcloud)
Microsoft Trojan:MSIL/AgentTesla.BFF!MTB
Arcabit Trojan.Generic.D2359101
AegisLab Trojan.MSIL.Agensla.i!c
GData Trojan.GenericKD.37064961
AhnLab-V3 Trojan/Win.AgentTesla.C4520922
McAfee RDN/Generic PWS.y
MAX malware (ai score=89)
Malwarebytes Trojan.MalPack.ADC
Panda Trj/GdSda.A
TrendMicro-HouseCall TrojanSpy.MSIL.NEGASTEAL.SMG
Ikarus Backdoor.AsyncRat
MaxSecure Trojan.Malware.300983.susgen
Fortinet MSIL/Kryptik.ZXG!tr
AVG Win32:RansomX-gen [Ransom]

How to remove Backdoor.MSIL.NanoBot ransomware?

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 Backdoor.MSIL.NanoBot 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 Backdoor.MSIL.NanoBot 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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