Written by Robert Bailey

What is VirTool:MSIL/Injector.SZ!bit infection?

In this short article you will find concerning the interpretation of VirTool:MSIL/Injector.SZ!bit and also its unfavorable effect on your computer system. Such ransomware are a kind of malware that is clarified by online frauds to demand paying the ransom money by a victim.

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Most of the instances, VirTool:MSIL/Injector.SZ!bit ransomware will instruct its sufferers to launch funds transfer for the function of counteracting the changes that the Trojan infection has presented to the victim’s tool.

VirTool:MSIL/Injector.SZ!bit Summary

These adjustments can be as complies with:

  • 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.
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • Possible date expiration check, exits too soon after checking local time;
  • 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.
  • A process created a hidden window;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses Windows utilities for basic functionality;
  • Deletes its original binary from disk;
  • Executed a process and injected code into it, probably while unpacking;
  • Steals private information from local Internet browsers;
  • Exhibits behavior characteristic of Pony malware;
  • Collects information about installed applications;
  • Harvests credentials from local FTP client softwares;
  • Harvests information related to installed mail clients;
  • Ciphering the papers situated on the sufferer’s disk drive — so the sufferer can no more use the data;
  • Preventing regular 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 W32/Ransom.AY.gen!Eldorado W32/Ransom.AY.gen!Eldorado


One of the most regular networks where VirTool:MSIL/Injector.SZ!bit Ransomware are infused are:

  • By methods of phishing emails;
  • As an effect of customer winding up on a resource that hosts a harmful software program;

As quickly as the Trojan is efficiently injected, it will certainly either cipher the information on the target’s PC or avoid the gadget from functioning in a proper fashion – while also putting a ransom money note that points out the need for the victims to effect the repayment for the purpose of decrypting the papers or recovering the file system back to the initial condition. In many instances, the ransom money note will turn up when the customer restarts the COMPUTER after the system has actually already been damaged.

VirTool:MSIL/Injector.SZ!bit circulation networks.

In different edges of the globe, VirTool:MSIL/Injector.SZ!bit grows by leaps and also bounds. However, the ransom money notes and techniques of extorting the ransom money quantity may vary depending on particular local (local) settings. The ransom money notes and methods of obtaining the ransom amount might vary depending on particular regional (regional) settings.

Ransomware injection

As an example:

    Faulty informs about unlicensed software program.

    In particular locations, the Trojans often wrongfully report having detected some unlicensed applications allowed on the victim’s tool. The sharp then requires the individual to pay the ransom.

    Faulty statements regarding unlawful content.

    In countries where software program piracy is much less popular, this technique is not as efficient for the cyber scams. Alternatively, the VirTool:MSIL/Injector.SZ!bit popup alert may incorrectly assert to be originating from a police institution and will report having situated youngster pornography or other prohibited data on the device.

    VirTool:MSIL/Injector.SZ!bit popup alert may falsely declare to be deriving from a regulation enforcement institution and will certainly report having situated youngster porn or various other unlawful information on the gadget. The alert will similarly contain a requirement for the user to pay the ransom money.

Technical details

File Info:

crc32: C19F9C35
md5: 516c6244aa8960a61c54118af3aeeea0
name: 516C6244AA8960A61C54118AF3AEEEA0.mlw
sha1: b2ef7484ec4d6d0b611f86b15c3454740d190379
sha256: ddb1b64b421ca8449f44ca27defd663d4e9b5bda2e1ed8116a254f278eac2d0c
sha512: 516461352bcd700e40ae68ff995ef82b6e3a15f03c53f177e6e4a830f5991dabe7c31507a0ffec79a63743c645d4095dc2d680bb3c22609af2afdf398a3c016f
ssdeep: 6144:1Nuiuq2y6Bj4ez6pER2C1m3GoDXTfxSARFS6:19ij4jpEvmWoDXrQIc
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
Assembly Version:
InternalName: 1z.exe
OriginalFilename: 1z.exe

VirTool:MSIL/Injector.SZ!bit also known as:

GridinSoft Trojan.Ransom.Gen
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.MSIL.Basic.6.Gen
McAfee Trojan-FMQH!516C6244AA89
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
Sangfor Malware
K7AntiVirus Trojan ( 0050d5fb1 )
BitDefender Trojan.MSIL.Basic.6.Gen
K7GW Trojan ( 0050d5fb1 )
Cybereason malicious.4aa896
BitDefenderTheta Gen:NN.ZemsilF.34804.qm0@a0sjAd
Cyren W32/Ransom.AY.gen!Eldorado
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:BankerX-gen [Trj]
Kaspersky HEUR:Trojan.MSIL.Generic
NANO-Antivirus Trojan.Win32.Kryptik.eovbad
AegisLab Trojan.MSIL.Generic.4!c
Tencent Win32.Trojan.Generic.Stkm
Ad-Aware Trojan.MSIL.Basic.6.Gen
Sophos Mal/Generic-S + Mal/Kryptik-AY
Comodo Malware@#3lr06d17r8hno
F-Secure Heuristic.HEUR/AGEN.1122381
DrWeb Trojan.Inject3.12882
McAfee-GW-Edition BehavesLike.Win32.Generic.dc
Emsisoft Trojan.MSIL.Basic.6.Gen (B)
Ikarus Trojan.Inject
Jiangmin Trojan.Generic.bmkxw
eGambit Unsafe.AI_Score_100%
Avira HEUR/AGEN.1122381
Antiy-AVL Trojan/Win32.AGeneric
Microsoft VirTool:MSIL/Injector.SZ!bit
Arcabit Trojan.MSIL.Basic.6.Gen
ZoneAlarm HEUR:Trojan.MSIL.Generic
GData Trojan.MSIL.Basic.6.Gen
Cynet Malicious (score: 100)
Acronis suspicious
ALYac Trojan.MSIL.Basic.6.Gen
MAX malware (ai score=100)
Malwarebytes MachineLearning/Anomalous.100%
Panda Trj/GdSda.A
ESET-NOD32 a variant of MSIL/Kryptik.JCT
TrendMicro-HouseCall BKDR_HPKEYBASE.SM
Rising Trojan.Kryptik!8.8 (CLOUD)
SentinelOne Static AI – Malicious PE
MaxSecure Trojan.Malware.300983.susgen
Fortinet MSIL/Kryptik.JCT!tr
AVG Win32:BankerX-gen [Trj]
CrowdStrike win/malicious_confidence_100% (D)
Qihoo-360 Generic/Trojan.7c5

How to remove VirTool:MSIL/Injector.SZ!bit 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 VirTool:MSIL/Injector.SZ!bit 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 VirTool:MSIL/Injector.SZ!bit 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

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

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