What is MSIL/Injector.NAH infection?

In this post you will find about the definition of MSIL/Injector.NAH and its negative effect on your computer system. Such ransomware are a type of malware that is elaborated by on-line frauds to demand paying the ransom money by a victim.

GridinSoft Anti-Malware Review

It is better to prevent, than repair and repent!

When we talk about the intrusion of unfamiliar programs into your computer’s work, the proverb “Forewarned is forearmed” describes the situation as accurately as possible. Gridinsoft Anti-Malware is exactly the tool that is always useful to have in your armory: fast, efficient, up-to-date. It is appropriate to use it as an emergency help at the slightest suspicion of infection.
GridinSoft Anti-Malware 6-day trial available.
EULA | Privacy Policy | GridinSoft

Most of the cases, MSIL/Injector.NAH ransomware will advise its targets to launch funds transfer for the purpose of neutralizing the amendments that the Trojan infection has presented to the victim’s device.

MSIL/Injector.NAH Summary

These adjustments can be as adheres to:

  • 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.
  • Ciphering the papers located on the victim’s hard disk — so the victim 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.


The most normal networks whereby MSIL/Injector.NAH Ransomware are injected are:

  • By means of phishing emails;
  • As a repercussion of user ending up on a source that hosts a harmful software application;

As soon as the Trojan is successfully injected, it will either cipher the data on the victim’s PC or avoid the device from working in a proper fashion – while also putting a ransom note that mentions the need for the sufferers to effect the payment for the objective of decrypting the records or restoring the file system back to the first problem. In a lot of circumstances, the ransom money note will certainly come up when the customer reboots the COMPUTER after the system has actually already been damaged.

MSIL/Injector.NAH circulation channels.

In various edges of the globe, MSIL/Injector.NAH grows by jumps and also bounds. Nonetheless, the ransom money notes as well as tricks of extorting the ransom amount may vary depending on particular regional (local) settings. The ransom money notes and techniques of extorting the ransom quantity may vary depending on particular local (regional) settings.

Ransomware injection

For example:

    Faulty informs regarding unlicensed software application.

    In specific locations, the Trojans often wrongfully report having found some unlicensed applications made it possible for on the target’s gadget. The alert then requires the customer to pay the ransom money.

    Faulty declarations about unlawful web content.

    In countries where software piracy is much less popular, this method is not as reliable for the cyber fraudulences. Conversely, the MSIL/Injector.NAH popup alert may wrongly assert to be stemming from a police institution as well as will certainly report having situated youngster pornography or other unlawful information on the tool.

    MSIL/Injector.NAH popup alert might wrongly assert to be deriving from a legislation enforcement organization and also will certainly report having situated kid porn or other illegal data on the device. The alert will in a similar way consist of a requirement for the user to pay the ransom.

Technical details

File Info:

crc32: ACDF4F12
md5: a41815cd8871a62ceaac8c785ab19f89
name: A41815CD8871A62CEAAC8C785AB19F89.mlw
sha1: 3b0b8293ef596147549022ab8f1f2f3fbd938a82
sha256: 91d72a263183afc6f07e792e35dbf0754ad11db9269f6755ad457a5f3b440f36
sha512: d46a2114deef2fde8a2c00f520979fdbcaf89348171a54d400aa00e826df5c668aba6bb5c5aeb142f0a1e0887d51cae15cccfdfb191971ce70bee3ee0c576ebf
ssdeep: 6144:OVoZ1PB+cHLr/wMeL55YALK0v1i2Bwav09njgOyZbxNeq+B8r2tOVdNOQ+ZyTZt:OcFkcHeLnplvo9jgOiPeq+8mMt
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: Copyright xa9 2005-2011 Piriform Ltd
Assembly Version:
InternalName: exe00.exe
CompanyName: Piriform Ltd
LegalTrademarks: CCleaner
Comments: CCleaner
ProductName: CCleaner
FileDescription: CCleaner
OriginalFilename: exe00.exe

MSIL/Injector.NAH also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 700000121 )
Elastic malicious (high confidence)
Cynet Malicious (score: 100)
ALYac Trojan.Generic.22694548
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Blocker.d5cecca8
K7GW Trojan ( 700000121 )
Cybereason malicious.d8871a
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of MSIL/Injector.NAH
APEX Malicious
Avast MSIL:GenMalicious-KS [PUP]
Kaspersky Trojan-Ransom.Win32.Blocker.klwu
BitDefender Trojan.Generic.22694548
NANO-Antivirus Trojan.Win32.Blocker.evhbft
MicroWorld-eScan Trojan.Generic.22694548
Ad-Aware Trojan.Generic.22694548
Sophos Mal/Generic-S
Comodo TrojWare.MSIL.Injector.AS@6l6mun
BitDefenderTheta Gen:NN.ZemsilF.34628.Dm0@aSZuXqb
VIPRE Trojan.MSIL.Injector.pei (v)
McAfee-GW-Edition Trojan-FJPW!A41815CD8871
Emsisoft Trojan.Generic.22694548 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Blocker.sqp
Avira TR/Dropper.MSIL.Gen
eGambit Unsafe.AI_Score_100%
Microsoft VirTool:Win32/CeeInject
AegisLab Trojan.Win32.Generic.4!c
ZoneAlarm Trojan-Ransom.Win32.Blocker.klwu
GData Trojan.Generic.22694548
McAfee Trojan-FJPW!A41815CD8871
MAX malware (ai score=99)
Panda Trj/GdSda.A
Rising Ransom.Blocker!8.12A (CLOUD)
Ikarus Worm.Win32.Ainslot
MaxSecure Trojan.Malware.109195982.susgen
Fortinet MSIL/Injector.PEI!tr
AVG MSIL:GenMalicious-KS [PUP]
Qihoo-360 Win32/Ransom.Blocker.HwMA7TYA

How to remove MSIL/Injector.NAH 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 MSIL/Injector.NAH 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 MSIL/Injector.NAH you can always ask me in the comments for getting help.

User Review
0 (0 votes)
Comments Rating 0 (0 reviews)


  1. GridinSoft Anti-Malware Review from HowToFix site:
  2. More information about GridinSoft products:

About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

Leave a Reply


This site uses Akismet to reduce spam. Learn how your comment data is processed.