Win32/Filecoder.NSF
Andrew Patterson
Updated on April 03, 2026
What is Win32/Filecoder.NSF infection?
In this post you will certainly find about the interpretation of Win32/Filecoder.NSF as well as its negative effect on your computer system. Such ransomware are a kind of malware that is clarified by online fraudulences to demand paying the ransom money by a sufferer.
In the majority of the cases, Win32/Filecoder.NSF ransomware will advise its victims to start funds transfer for the objective of neutralizing the modifications that the Trojan infection has actually presented to the target’s tool.
Win32/Filecoder.NSF 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.
- The executable is compressed using UPX;
- Attempts to delete volume shadow copies;
- Attempts to stop active services;
- Exhibits possible ransomware file modification behavior;
- 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.
- Likely virus infection of existing system binary;
- Uses suspicious command line tools or Windows utilities;
- Ciphering the records located on the target’s hard drive — so the victim can no longer make use of the information;
- Preventing normal access to the sufferer’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.
Win32/Filecoder.NSF
One of the most common channels where Win32/Filecoder.NSF Trojans are infused are:
- By ways of phishing emails;
- As a repercussion of individual winding up on a source that organizes a destructive software program;
As soon as the Trojan is effectively injected, it will certainly either cipher the information on the victim’s computer or protect against the gadget from functioning in a proper fashion – while also placing a ransom note that states the need for the victims to impact the repayment for the function of decrypting the files or bring back the file system back to the first problem. In many instances, the ransom note will turn up when the customer restarts the PC after the system has currently been damaged.
Win32/Filecoder.NSF circulation channels.
In various edges of the world, Win32/Filecoder.NSF expands by jumps as well as bounds. Nonetheless, the ransom money notes as well as methods of obtaining the ransom quantity may vary relying on specific neighborhood (regional) setups. The ransom money notes and techniques of obtaining the ransom money quantity may differ depending on specific local (local) setups.
For instance:
Faulty informs about unlicensed software application.
In particular locations, the Trojans frequently wrongfully report having detected some unlicensed applications allowed on the sufferer’s device. The sharp after that demands the individual to pay the ransom money.
Faulty declarations about illegal content.
In countries where software program piracy is less preferred, this approach is not as effective for the cyber frauds. Alternatively, the Win32/Filecoder.NSF popup alert might incorrectly declare to be stemming from a law enforcement institution as well as will report having situated youngster pornography or various other illegal information on the gadget.
Win32/Filecoder.NSF popup alert may wrongly declare to be deriving from a law enforcement organization as well as will certainly report having located kid pornography or various other unlawful data on the device. The alert will in a similar way include a demand for the customer to pay the ransom money.
Technical details
File Info:
crc32: 0A24769Amd5: 1e05bcb32eb4613c8abfabb6d2706f3ename: 1E05BCB32EB4613C8ABFABB6D2706F3E.mlwsha1: 7717b3f69a108579a66d27a886aab2414ed47e27sha256: 10c31e2667bf1b19107cfbf15f6f22ea07928ab3a33ef200be3fddca938f4d67sha512: 97666d56e3cb0ec9c02c19f491dd174e81746b8661a55a92284ec7248e4b3e2796c1a4be4cea976088252773dadc735db1be8ff4bb603fd9ac567672d6d796f4ssdeep: 3072:ZqsUoSl80Yvv8oX/H2yr99FxkOAfj8VzpYouo3ABT3k0Xv0bMXX8IPeQN6lqwHK:gs9SsX/WeFxNVSouoEuM8iyxHKotype: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressedVersion Info:
0: [No Data]
Win32/Filecoder.NSF also known as:
| GridinSoft | Trojan.Ransom.Gen |
| Bkav | W32.AIDetect.malware1 |
| K7AntiVirus | Riskware ( 0040eff71 ) |
| Elastic | malicious (high confidence) |
| Cynet | Malicious (score: 100) |
| CAT-QuickHeal | Trojan.Mauvaise.SL1 |
| ALYac | Generic.Ransom.EvilLocker.C5E045FD |
| Cylance | Unsafe |
| Zillya | Trojan.Filecoder.Win32.8142 |
| Sangfor | Trojan.Win32.Save.a |
| CrowdStrike | win/malicious_confidence_90% (W) |
| Alibaba | Ransom:Win32/generic.ali2000010 |
| K7GW | Riskware ( 0040eff71 ) |
| Cybereason | malicious.32eb46 |
| Symantec | ML.Attribute.HighConfidence |
| ESET-NOD32 | a variant of Win32/Filecoder.NSF |
| APEX | Malicious |
| Avast | Win32:Malware-gen |
| Kaspersky | HEUR:Trojan.Win32.Generic |
| BitDefender | Generic.Ransom.EvilLocker.C5E045FD |
| NANO-Antivirus | Trojan.Win32.Ric.fhivwo |
| MicroWorld-eScan | Generic.Ransom.EvilLocker.C5E045FD |
| Ad-Aware | Generic.Ransom.EvilLocker.C5E045FD |
| Sophos | Mal/Generic-S |
| Comodo | Malware@#1nwe5v8359qkr |
| BitDefenderTheta | AI:Packer.3C05128E1E |
| VIPRE | Trojan.Win32.Generic!BT |
| TrendMicro | Ransom.Win32.EVILLOCKR.SM |
| McAfee-GW-Edition | BehavesLike.Win32.Autorun.dc |
| FireEye | Generic.mg.1e05bcb32eb4613c |
| Emsisoft | Generic.Ransom.EvilLocker.C5E045FD (B) |
| SentinelOne | Static AI – Malicious PE |
| Jiangmin | Trojan.Generic.cpilc |
| Webroot | W32.Trojan.Gen |
| Avira | HEUR/AGEN.1141600 |
| eGambit | Unsafe.AI_Score_95% |
| Antiy-AVL | Trojan/Generic.ASMalwS.2862361 |
| Microsoft | Trojan:Win32/Occamy.C10 |
| AegisLab | Trojan.Win32.Generic.4!c |
| GData | Generic.Ransom.EvilLocker.C5E045FD |
| AhnLab-V3 | Malware/Win32.Generic.C2709733 |
| McAfee | GenericRXAA-FA!1E05BCB32EB4 |
| MAX | malware (ai score=99) |
| VBA32 | BScope.Adware.Puwaders |
| Panda | Trj/GdSda.A |
| TrendMicro-HouseCall | Ransom.Win32.EVILLOCKR.SM |
| Yandex | Trojan.GenAsa!3m+jgRyKCKU |
| Ikarus | Trojan-Ransom.Rokku |
| MaxSecure | Trojan.Malware.300983.susgen |
| Fortinet | W32/EvilLocker.A!tr.ransom |
| AVG | Win32:Malware-gen |
| Paloalto | generic.ml |
How to remove Win32/Filecoder.NSF virus?
There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft">2.
Download GridinSoft Anti-Malware.
You can download GridinSoft Anti-Malware by clicking the button below:
Download GridinSoft Anti-MalwareRun 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.
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.
Press “Install” button.
Once installed, Anti-Malware will automatically run.
Wait for the Anti-Malware scan to complete.
GridinSoft Anti-Malware will automatically start scanning your system for Win32/Filecoder.NSF 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.
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.
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 Anti-Malware
If the guide doesn’t help you to remove Win32/Filecoder.NSF you can always ask me in the comments for getting help.
References
- GridinSoft Anti-Malware Review from HowToFix site:
- More information about GridinSoft products:
