File Spider Ransomware

Also Known As: File Spider virus
Distribution: Low
Damage level: Severe

File Spider ransomware removal instructions

What is File Spider?

File Spider is a ransomware-type virus discovered by malware security researcher, Lawrence Abrams. It is distributed using spam emails with malicious attachments (MS Office documents) that execute a macro command to download and run malware. Developers target users mainly from Serbia, Bosnia and Herzegovina, and Croatia. Immediately after infiltration, File Spider encrypts most stored files and appends filenames with the ".spider" extension (e.g., "sample.jpg" becomes "sample.jpg.spider"). From this point, files become unusable. Once files are encrypted, File Spider runs the "dec.exe" file (downloaded by the attachment and placed in the "%AppData%\Spider" folder). In addition, it creates two shortcuts: "HOW TO DECRYPT FILES.url" (placed in each existing folder and leading to a "how to decrypt" online video tutorial) and "DECRYPTER.url" (placed on the desktop, and which opens the "dec.exe" file).

The pop-up window contains a message that informs victims of the encryption and instructs them what to do next. To restore files, users must first visit File Spider's website and pay a ransom. The message states that decryption requires a unique key. Unfortunately, this information is accurate. File Spider employs AES-128 cryptography and, thus, it is impossible to restore files without a key generated uniquely for each victim. In addition, the primary key is encrypted using the RSA algorithm (which generates a second key), thus making things even more complicated. Cyber criminals store these keys on a remote server and users are encouraged to pay 0.00725 Bitcoin (currently equivalent to ~$120) in exchange for them. The message also states that victims have four days (exactly 96 hours) to submit payment. After this period, the keys are permanently blocked/deleted and restoring files becomes impossible. Despite these threats and demands, cyber criminals cannot be trusted. Research shows that these people commonly ignore victims, once ransoms are paid. If you pay, there is a high probability that you will be scammed and receive no positive result. As well as losing your money, you will also support cyber criminals' malicious businesses. Therefore, we strongly advise you to ignore all requests to pay. Unfortunately, there are no tools capable of restoring files encrypted by this ransomware and the only solution is to restore your files/system from a backup.

Screenshot of a message encouraging users to pay a ransom to decrypt their compromised data:

File Spider decrypt instructions

File Spider is virtually identical to dozens of other ransomware-type viruses such as Wallet, ExecutionerPlus, Halloware, and many others. As with File Spider, these malware infections also encrypt stored files and make ransom demands. In most cases, these viruses have just two major differences: 1) size of ransom, and; 2) type of encryption algorithm used. Research shows that, unfortunately, they employ algorithms that generate unique decryption keys. Therefore, unless the malware has certain bugs/flaws (e.g., stores the key locally, is hard-coded, etc.), restoring files manually without involvement of developers (contacting these people is not recommended) is impossible. File Spider and other ransomware-type viruses present a strong case for maintaining regular data backups. Remember that backup files must be stored on a remote server or external storage, otherwise the virus encrypts them as well.

How did ransomware infect my computer?

To proliferate ransomware, developers employ various tools, however, the most popular are spam emails, unofficial software download sources, fake software update tools, and trojans. As mentioned above, once executed, malicious spam email attachments (e.g., MS Office documents, JavaScript files, etc.) stealthily download and install the malware, whilst third party download sources (freeware download websites, free file hosting websites, peer-to-peer [P2P] networks, so on) often present viruses as legitimate software, thereby tricking users into downloading and installing malware. Fake software update tools exploit outdated software bugs and flaws to infect the system. Trojans are the simplest ones - they merely open gates for malware to infiltrate the system. Essentially, the main reasons for computer infections are poor knowledge and careless behavior.

Threat Summary:
NameFile Spider virus
Threat TypeRansomware, Crypto Virus, Files locker
SymptomsCan't open files stored on your computer, previously functional files now have a different extension, for example my.docx.locked. A ransom demanding message is displayed on your desktop. Cyber criminals are asking to pay a ransom (usually in bitcoins) to unlock your files.
Distribution methodsInfected email attachments (macros), torrent websites, malicious ads.
DamageAll files are encrypted and cannot be opened without paying a ransom. Additional password stealing trojans and malware infections can be installed together with a ransomware infection.

To eliminate File Spider virus our malware researchers recommend scanning your computer with Spyhunter.
▼ Download Spyhunter
Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

How to protect yourself from ransomware infections?

To prevent this situation, be very cautious when browsing the Internet. Never open files received from dubious email addresses. In fact, these emails should be deleted without reading. Furthermore, download your software from official sources only and, if possible, using a direct download link. Keep installed applications up-to-date and use a legitimate anti-virus/anti-spyware suite, however, we strongly advise you to avoid using any third party updaters - use implemented "Update" functions or at least tools provided by the official developer.

File Spider ransomware ransom-demand message:

As you may have already noticed, all your important files are encrypted and you no longer have access to them. A unique key has been generated specifically for this PC
and two very strong encryption algorithm was applied in that process. Original content of your files are wiped and overwritten with encrypted data so it cannot be recovered using any conventional data recovery tool.
The good news is that there is still a chance to recover your files, your just need to have the right key.
To obtain the key, visit our website from the menu above. You have to be fast, after 96 hours the key will be blocked and all your files will remain permanently encrypted since no one will be able to recover them without the key!
Remember, do not try anything stupid, the program has several security measures to delete all your files and cause damage to your PC.
To avoid any misunderstanding, please read the Help section.

Screenshots of File Spider ransomware pop-up window ("dec.exe") tabs:

Visit Website:

File Spider popup Website

Text presented within this tab:

To visit our website your need to install a special browser named Tor Browser. Be aware, our website is reachable only via Tor Browser and if you try to visit it using any other browser eg. Chrome, it won't work! Tor Browser can be downloaded from its official website listed below. Use newly installed browser to visit our website address. On our website there is a online tool that can generate decryption key using your ID code, use that tool and you will get the key needed to decrypt your files. Also, you will be asked to make a payment for your Decryption Key, you will need a Bitcoins for that. More about bitcoins read in Help section. After your get your key, select Decrypter from menu and follow the instructions provided on that page. This all may seem complicated to you, actually it's really easy. A link to Video Tutorial with live demonstration can be found inside Help Section. Good Luck!

ID Code:

File Spider popup ID Code

Text presented within this tab:

Enter your Decryption Key and click Start Decrypting, seat back and relax, in few minutes you will have full access to all your files!


File Spider popup Decrypter

Text presented within this tab:

During encryption process a unique key has been generated, used to encrypt your files, and then destroyed. To decrypt your files you need that key. We call that key a Decryption Key. You can not use the key from other PC, it won't work, you need a key corresponding to your PC. Your Decryption Key, required for decryption process, can be generated only from something that we call a ID Code, you will find that code below.

Screenshot of File Spider website:

File Spider website

Screenshot of files encrypted by File Spider (".spider" extension):

Files encrypted by File Spider

File Spider ransomware removal:

Instant automatic removal of File Spider virus: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Spyhunter is a professional automatic malware removal tool that is recommended to get rid of File Spider virus. Download it by clicking the button below:
▼ DOWNLOAD Spyhunter By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

Quick menu:

Step 1

Windows XP and Windows 7 users: Start your computer in Safe Mode. Click Start, click Shut Down, click Restart, click OK. During your computer start process, press the F8 key on your keyboard multiple times until you see the Windows Advanced Option menu, and then select Safe Mode with Networking from the list.

Safe Mode with Networking

Video showing how to start Windows 7 in "Safe Mode with Networking":

Windows 8 users: Start Windows 8 is Safe Mode with Networking - Go to Windows 8 Start Screen, type Advanced, in the search results select Settings. Click Advanced startup options, in the opened "General PC Settings" window, select Advanced startup. Click the "Restart now" button. Your computer will now restart into the "Advanced Startup options menu". Click the "Troubleshoot" button, and then click the "Advanced options" button. In the advanced option screen, click "Startup settings". Click the "Restart" button. Your PC will restart into the Startup Settings screen. Press F5 to boot in Safe Mode with Networking.

Windows 8 Safe Mode with networking

Video showing how to start Windows 8 in "Safe Mode with Networking":

Windows 10 users: Click the Windows logo and select the Power icon. In the opened menu click "Restart" while holding "Shift" button on your keyboard. In the "choose an option" window click on the "Troubleshoot", next select "Advanced options". In the advanced options menu select "Startup Settings" and click on the "Restart" button. In the following window you should click the "F5" button on your keyboard. This will restart your operating system in safe mode with networking.

windows 10 safe mode with networking

Video showing how to start Windows 10 in "Safe Mode with Networking":

Step 2

Log in to the account infected with the File Spider virus. Start your Internet browser and download a legitimate anti-spyware program. Update the anti-spyware software and start a full system scan. Remove all entries detected.

If you cannot start your computer in Safe Mode with Networking, try performing a System Restore.

Video showing how to remove ransomware virus using "Safe Mode with Command Prompt" and "System Restore":

1. During your computer start process, press the F8 key on your keyboard multiple times until the Windows Advanced Options menu appears, and then select Safe Mode with Command Prompt from the list and press ENTER.

Boot your computer in Safe Mode with Command Prompt

2. When Command Prompt mode loads, enter the following line: cd restore and press ENTER.

system restore using command prompt type cd restore

3. Next, type this line: rstrui.exe and press ENTER.

system restore using command prompt rstrui.exe

4. In the opened window, click "Next".

restore system files and settings

5. Select one of the available Restore Points and click "Next" (this will restore your computer system to an earlier time and date, prior to the File Spider ransomware virus infiltrating your PC).

select a restore point

6. In the opened window, click "Yes".

run system restore

7. After restoring your computer to a previous date, download and scan your PC with recommended malware removal software to eliminate any remaining File Spider ransomware files.

To restore individual files encrypted by this ransomware, try using Windows Previous Versions feature. This method is only effective if the System Restore function was enabled on an infected operating system. Note that some variants of File Spider are known to remove Shadow Volume Copies of the files, so this method may not work on all computers.

To restore a file, right-click over it, go into Properties, and select the Previous Versions tab. If the relevant file has a Restore Point, select it and click the "Restore" button.

Restoring files encrypted by CryptoDefense

If you cannot start your computer in Safe Mode with Networking (or with Command Prompt), boot your computer using a rescue disk. Some variants of ransomware disable Safe Mode making its removal complicated. For this step, you require access to another computer.

To regain control of the files encrypted by File Spider, you can also try using a program called Shadow Explorer. More information on how to use this program is available here.

shadow explorer screenshot

To protect your computer from file encryption ransomware such as this, use reputable antivirus and anti-spyware programs. As an extra protection method, you can use programs called HitmanPro.Alert and EasySync CryptoMonitor, which artificially implant group policy objects into the registry to block rogue programs such as File Spider ransomware.

Note that Windows 10 Fall Creators Update includes "Controlled Folder Access" feature that blocks ransomware attempts to encrypt your files. By default, this feature automatically protects files stored in the Documents, Pictures, Videos, Music, Favorites as well as Desktop folders.

Controll Folder Access

Windows 10 users should install this update to protect their data from ransomware attacks. Here is more information on how to get this update and add an additional protection layer from ransomware infections.

HitmanPro.Alert CryptoGuard - detects encryption of files and neutralises any attempts without need for user-intervention:

hitmanproalert ransomware prevention application

Malwarebytes Anti-Ransomware Beta uses advanced proactive technology that monitors ransomware activity and terminates it immediately - before reaching users' files:

malwarebytes anti-ransomware

  • The best way to avoid damage from ransomware infections is to maintain regular up-to-date backups. More information on online backup solutions and data recovery software Here.

Other tools known to remove File Spider ransomware: