Written by Robert Bailey

What is MSIL/Agent.BYD infection?

In this article you will certainly find concerning the meaning of MSIL/Agent.BYD and also its negative impact on your computer. Such ransomware are a type of malware that is elaborated by on-line scams to demand paying the ransom by a victim.

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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.
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Most of the cases, MSIL/Agent.BYD virus will advise its victims to start funds move for the function of neutralizing the changes that the Trojan infection has introduced to the victim’s device.

MSIL/Agent.BYD Summary

These adjustments can be as follows:

  • 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 records situated on the target’s hard drive — so the sufferer can no more utilize the data;
  • Preventing routine access to the sufferer’s workstation;
Similar behavior
Related domains HEUR:Trojan-Ransom.MSIL.Blocker.gen


One of the most common channels through which MSIL/Agent.BYD Ransomware Trojans are injected are:

  • By means of phishing emails;
  • As a consequence of customer winding up on a source that holds a destructive software;

As quickly as the Trojan is efficiently infused, it will either cipher the data on the sufferer’s computer or protect against the device from operating in an appropriate way – while likewise placing a ransom money note that discusses the need for the targets to effect the settlement for the function of decrypting the documents or restoring the data system back to the initial condition. In most instances, the ransom note will certainly show up when the client restarts the COMPUTER after the system has currently been damaged.

MSIL/Agent.BYD distribution networks.

In various corners of the world, MSIL/Agent.BYD expands by leaps and bounds. Nonetheless, the ransom money notes and tricks of obtaining the ransom money quantity might vary depending upon specific local (local) settings. The ransom notes and tricks of extorting the ransom money amount may vary depending on specific regional (local) setups.

Ransomware injection

For instance:

    Faulty informs about unlicensed software application.

    In specific areas, the Trojans usually wrongfully report having detected some unlicensed applications allowed on the sufferer’s tool. The sharp then requires the customer to pay the ransom.

    Faulty statements regarding illegal material.

    In countries where software program piracy is less prominent, this approach is not as effective for the cyber scams. Additionally, the MSIL/Agent.BYD popup alert may wrongly declare to be deriving from a law enforcement establishment and will certainly report having situated child porn or various other unlawful information on the tool.

    MSIL/Agent.BYD popup alert might falsely claim to be deriving from a legislation enforcement organization as well as will report having situated child pornography or various other unlawful information on the tool. The alert will likewise include a need for the customer to pay the ransom money.

Technical details

File Info:

crc32: 42E9E067
md5: a5e479c790da6284a14a5f3da9c33679
name: client.exe
sha1: 316ba857616398cdf54803e59cd5e11da61c77c5
sha256: 3978e4c046c324f9119126707f15080d5e0ead8ea10ea785bfced6b52bf7c6f0
sha512: 55e46b004baa4f9d57176668865e1b7ddffb78fd7e38e3cc719ebab2d2f5eafd3b649c252cc6c7f756c6570eb8366097c1166b79b83f73cd082776cea9f823bd
ssdeep: 3072:OgZApdYrD28fbJB2yLtyTkbjjxK3QdjrxivW+DXnH4vymb61j:O/pe1J0kbXtrxivW+D34vQ
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

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

MSIL/Agent.BYD also known as:

GridinSoft Trojan.Ransom.Gen
MicroWorld-eScan Gen:Variant.Razy.589660
CAT-QuickHeal Trojan.YakbeexMSIL.ZZ4
McAfee GenericRXIF-TH!A5E479C790DA
Cylance Unsafe
K7AntiVirus Trojan ( 0054dd361 )
BitDefender Gen:Variant.Razy.589660
K7GW Trojan ( 0054dd361 )
Cybereason malicious.790da6
Arcabit Trojan.Razy.D8FF5C
Invincea heuristic
ESET-NOD32 a variant of MSIL/Agent.BYD
Kaspersky HEUR:Trojan-Ransom.MSIL.Blocker.gen
Endgame malicious (high confidence)
Emsisoft Gen:Variant.Razy.589660 (B)
F-Secure Trojan.TR/Dropper.Gen
DrWeb Trojan.DownLoader30.7283
McAfee-GW-Edition BehavesLike.Win32.Generic.gz
Fortinet MSIL/Agent.BYD!tr
Ikarus Backdoor.Quasar
Jiangmin Trojan.MSIL.lmst
Webroot W32.Trojan.Gen
Avira TR/Dropper.Gen
MAX malware (ai score=84)
Microsoft Trojan:Win32/Wacatac.D!ml
ZoneAlarm HEUR:Trojan-Ransom.MSIL.Blocker.gen
AhnLab-V3 Malware/Win32.RL_Generic.R278710
Acronis suspicious
ALYac Gen:Variant.Razy.589660
Ad-Aware Gen:Variant.Razy.589660
Malwarebytes Spyware.PasswordStealer
Panda Trj/GdSda.A
Rising Trojan.Agent!8.B1E (TFE:dGZlOgyYmIMlq+Y97g)
SentinelOne DFI – Malicious PE
GData Gen:Variant.Razy.589660
BitDefenderTheta Gen:NN.ZemsilF.34104.zm3@aKshC6d
AVG Win32:RATX-gen [Trj]
Avast Win32:RATX-gen [Trj]
CrowdStrike win/malicious_confidence_100% (D)
MaxSecure Trojan.Malware.73689294.susgen

How to remove MSIL/Agent.BYD ransomware?

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 MSIL/Agent.BYD 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/Agent.BYD 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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