What is Win64/Filecoder.EFS.A infection?

In this post you will certainly find about the meaning of Win64/Filecoder.EFS.A and its unfavorable impact on your computer. Such ransomware are a type of malware that is clarified by on the internet fraudulences to demand paying the ransom money by a victim.

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In the majority of the situations, Win64/Filecoder.EFS.A infection will certainly advise its sufferers to start funds move for the function of counteracting the amendments that the Trojan infection has introduced to the victim’s tool.

Win64/Filecoder.EFS.A Summary

These adjustments can be as complies with:

  • Possible date expiration check, exits too soon after checking local time;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers found on the target’s hard disk drive — so the victim can no more utilize 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.


One of the most common networks whereby Win64/Filecoder.EFS.A Ransomware are infused are:

  • By means of phishing emails;
  • As a consequence of customer winding up on a source that hosts a harmful software program;

As quickly as the Trojan is effectively injected, it will certainly either cipher the data on the target’s PC or prevent the device from working in an appropriate fashion – while likewise positioning a ransom note that discusses the demand for the targets to effect the repayment for the function of decrypting the papers or restoring the file system back to the first condition. In the majority of instances, the ransom note will turn up when the client restarts the COMPUTER after the system has actually already been harmed.

Win64/Filecoder.EFS.A distribution networks.

In different corners of the world, Win64/Filecoder.EFS.A grows by jumps and also bounds. Nonetheless, the ransom notes as well as tricks of extorting the ransom quantity may vary depending upon certain neighborhood (local) settings. The ransom notes as well as methods of obtaining the ransom money quantity might differ depending on certain regional (regional) settings.

Ransomware injection

For example:

    Faulty alerts concerning unlicensed software application.

    In specific locations, the Trojans often wrongfully report having actually identified some unlicensed applications enabled on the target’s tool. The alert after that requires the individual to pay the ransom money.

    Faulty statements about prohibited web content.

    In countries where software application piracy is much less preferred, this approach is not as efficient for the cyber fraudulences. Alternatively, the Win64/Filecoder.EFS.A popup alert may falsely claim to be deriving from a law enforcement establishment and also will certainly report having located youngster pornography or various other illegal data on the device.

    Win64/Filecoder.EFS.A popup alert might incorrectly declare to be obtaining from a regulation enforcement organization and will report having situated child pornography or various other unlawful data on the tool. The alert will similarly include a demand for the individual to pay the ransom.

Technical details

File Info:

crc32: 48480A46
md5: 67f442366e73311123a195ebc6e3bffa
name: 67F442366E73311123A195EBC6E3BFFA.mlw
sha1: b0417c9822a42ad2d2332ccfb6ba3c8f8df0acd1
sha256: bffe9a124344c563a355740a44701aee070d072c6b9154c696a93b103e8ec7b2
sha512: ed67aed7806a5cdf652a691a497b5534a0250d4bb868a57fbd0a51dd75a5eab5656221fb2c0a27c22040e846230b65049a18c02390013b12ef310b7e588977ec
ssdeep: 3072:2/7QlBovSOCOu0OTYOuh50sP90fgLBGN2ieb4pk+bKjNY4:67ABFOOTYOyqsVYuENdwj9
type: PE32 executable (console) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win64/Filecoder.EFS.A also known as:

GridinSoft Trojan.Ransom.Gen
Cynet Malicious (score: 85)
ALYac Generic.Ransom.EFS.A.71A1DB4E
Cybereason malicious.66e733
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win64/Filecoder.EFS.A
APEX Malicious
Avast FileRepMalware
BitDefender Generic.Ransom.EFS.A.71A1DB4E
MicroWorld-eScan Generic.Ransom.EFS.A.71A1DB4E
Ad-Aware Generic.Ransom.EFS.A.71A1DB4E
BitDefenderTheta Gen:NN.ZexaF.34628.luW@a0SiHSci
FireEye Generic.Ransom.EFS.A.71A1DB4E
Emsisoft Generic.Ransom.EFS.A.71A1DB4E (B)
Avira TR/Ransom.Gen
Arcabit Generic.Ransom.EFS.A.71A1DB4E
GData Generic.Ransom.EFS.A.71A1DB4E
McAfee Artemis!67F442366E73
MAX malware (ai score=88)
Malwarebytes Malware.Heuristic.1006
AVG FileRepMalware

How to remove Win64/Filecoder.EFS.A 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 Win64/Filecoder.EFS.A 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 Win64/Filecoder.EFS.A 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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