How to remove IISS Ransomware (Data Recovery Solution)

Easy methods to delete IISS Ransomware from PCs (Remove DJVU/STOP Ransomware’s variants)

IISS Ransomware is another ransomware belongs to DJVU/STOP Ransomware family that is made using powerful RSA encryption algorithm by cybercriminals. The main purpose of attackers behind this file virus is to encrypt your personal files or data stored in your computer and demands ransom payment for decryption. It operates by encrypting all types of files including images, audios, videos, games, pdf, ppt, xlx, css, html, text, documents, databases and other types of files of your computer. In other words, you can’t access or open your personal files anymore due to its nasty behaviors.

During encryption process, it renames each file by appending .iiss File Extension. For example, “1.png” file is turned into “1.png.iiss” making encoded data unusable. After encryption process is finished, “_readme.txt” text files as ransom notes are dropped in each in folder of your computer. In ransom note, attackers write that they are willing to provide the decryption keys/software/tools for a ransom payment of $490 – $980 in return. It also states that you need to establish the contact with cybercriminals via [email protected] or [email protected] email address presented on ransom note for decryption.

Ransomware Attackers claims that the only way to decrypt files locked by this ransomware is to purchase & use its decryption keys/software. Initially, it provides free decryption service for some encrypted files of your computer as proof that they have right decryption keys. It asks you to send 2-3 encrypted files on given email address. After successful free decryption test, it forces you to pay $490 – $980 amount of ransom money in Bitcoin cryptocurrency to decrypt rest of the files.

Keep in mind that they don’t have any decryption keys/tools to decrypt files locked by this ransomware. So, we recommended you to please avoid paying any amount of extortion money to them at any cases. They will never decrypt your files at any cases. In order to pay extortion money, they can keep record of your some information such as IP address, URLs search, login ID & password of your various accounts, banking information and more details as well. So, it is important to remove IISS Ransomware from System as soon as possible.

Let’s take have a look at message displayed on “_readme.txt” ransom note:


Don’t worry, you can return all your files!

All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key.

The only method of recovering files is to purchase decrypt tool and unique key for you.

This software will decrypt all your encrypted files.

What guarantees you have?

You can send one of your encrypted file from your PC and we decrypt it for free.

But we can decrypt only 1 file for free. File must not contain valuable information.

You can get and look video overview decrypt tool:


Price of private key and decrypt software is $980.

Discount 50% available if you contact us first 72 hours, that’s price for you is $490.

Please note that you’ll never restore your data without payment.

Check your e-mail “Spam” or “Junk” folder if you don’t get answer more than 6 hours.

To get this software you need write on our e-mail:

[email protected]

Reserve e-mail address to contact us:

[email protected]

Your personal ID: XXXXXXXXXX

Distribution methods:

Like other DJVU/STOP Ransomware’s variants, IISS Ransomware is generally distributed via email spam campaigns, certain Trojans, fake software updaters, downloaders or installers and other third parties’ sources. Cybercriminals send spam emails that have some malicious file attached to them or certain hyperlinks to download for malicious files. These attachments can be Microsoft Office documents, ppt, xlx, ZIP, RAR, JavaScript and/or other formats of files. When opened, these attachments files cause installation of certain malware. It executes encryption module and starts locking all files stored in your device.

Precautionary measures:

Any hyperlinks or attachments presented in suspicious/irrelevant emails must not be opened any cases. You should check if the relevant/spam emails are in “Spam folder” of your mail service you use. If it is spam folder, you should stop opening such emails. But in case if spammy emails are appear in inbox of mail service, then “anti-Spam filter” features/option should be applied to send these spammy emails to “Spam folder”. Note that “anti-spam filter” is the feature of many popular mail services like Gmail. However, you should never reply to those spammy emails and try to send such senders’ email address to blocklist.

Threat Summary

Name: IISS Ransomware, .iiss File Virus

Type: Ransomware, File virus, Crypto-malware

Ransom note: “_readme.txt”

Ransom amount: “$490 – $980”

Description: This dubious file virus locks all files of your computer by appending .iiss file extension and demands ransom payment for decryption

Distribution methods: Malicious emails attachments or hyperlinks, bundles of free software, fake software updaters or installers

Motives of attackers: Aims to collect your personal information and shares it to illegal ones.

Malware removal method: To remove IISS Ransomware or similar malware, we recommended you to scan your System with strong antivirus software

Data recovery solution: After malware or ransomware removal, you can use strong data recovery software to restore all files locked by ransomware.

Do You Suspect Your Computer May Be Infected with ‘IISS Ransomware’ & Other Threats? Scan Your Computer for Threats with SpyHunter

Spyhunter is a powerful malware remediation and protection tool designed to help provide users with in-depth system security analysis, detection and removal of a wide range of threats like IISS Ransomware as well as a one-on-one tech support service.

For more information, read SpyHunter’s EULA, Threat Assessment Criteria, and Privacy Policy. The scanner you download here is free version and is able to scan your system for possible threat’s presence. however, it requires a 48 hour period to remove detected threats without any charge. if you want not to wait for that period, you will have to purchase its licensed version.

(Data Recovery Solution)

The first recommendation is to recover your encrypted data with backup files you have created. In case there is no backup available, try to restore your encrypted data with data recovery tool suggested here.

Recommended methods for IISS Ransomware removal and restore encrypted files

IISS Ransomware is very harmful crypto-malware designed to encrypt all types of files including photos, audios, videos, documents and other files, and make them inaccessible. After encryption process, it spreads the ransom note in each folder of your computer that claims the decryption is possible only when you use its data recovery service. We recommended you to please avoid paying demanded ransom money to them.

In that case, you need to remove IISS Ransomware and all the related components from PCs immediately and then perform data recovery process. Here, we are discussing about both malware removal and data recovery method that could help you to solve your problem. Ransomware removal method will help to find the location of this nasty crypto-malware in your computer and remove them completely while data recovery method will help you to get back your damaged or locked files in your machine. Let’s go for the solution.

Remove IISS Ransomware using “Safe Mode with Networking”

  • Restart your PCs and press “F8” function key multiple times you see the “Advance Boot Options” window
  • Select “Safe Mode with Networking” in the list
  • Now, log in to account with IISS Ransomware infection
  • Open your internet browser and download the legitimate anti-malware software. You can download “SpyHunter” anti-malware software that has the ability to delete all types of malware or spyware from machine.
  • Update the anti-malware software and starts the “Full Scan” operation to remove all programs related to IISS Ransomware from machine.

Remove IISS Ransomware using “Safe Mode with Command Prompt” and “System Restore”

  • Restart your computer and press “F8” function key multiple times until “Windows Advance Options” menu appears

  • Select “Safe Mode with Command Prompt” option in the list

  • Now, type “cd restore” command in command Prompt and hit “Enter” key to execute it

  • After that, type “rstrui.exe” command in command line and hit “Enter” key
  • Once “rstrui.exe” command executed, “System Restore” window will appear
  • Click on “Next” button

  • Choose one of available “Restore Points” and click on “Next”

  • In the confirmation dialog box, click on “Yes” to start “System Restore” process

  • After restoring your computer to previous date, download/install and scan your computer with powerful anti-malware software to eliminate any remaining malicious programs related of IISS Ransomware. You can download the powerful antivirus software via “download link” below

Download Spyhunter Anti-Malware Tool

Restore files encrypted by IISS Ransomware using “Windows Previous Versions” feature

To restore individual files encrypted by IISS Ransomware, follow the steps below:

  • To restore a file, right-click on it and go to “Properties”
  • Select the “Previous Versions” tab
  • If the relevant files has a “Restore Point”, select it and click on “Restore” button

Note: This method is only effective if “System Restore” function was enabled on your Windows operating System. On other hand, some ransomware variants like IISS Ransomware are known to remove “Shadow Volume Copies” of the files. So, we can say that this method may not work for data recovery.

Restore files locked by IISS Ransomware using “Shadow Explorer”

To restore files, you can use “Shadow Explorer” application. This application allows you to browse the “Shadow Copies” created by Windows OS Shadow Copy Service. “Shadow Explorer” helps if you are unable of access the “Shadow Copies” by default especially in “Windows Home Editions”. Note that “Shadow Copies” can directly be accessed only in Business Ultimate and Enterprise versions.

“Shadow Explorer” provides Volume Shadow copy service and other features including retrieve all the variants of files and folders available, allow to access through shadow copies and show available current copies.

Important Note: This data recovery application is designed to decrypt or recover your files from Shadow copies which is created by “Windows Volume Shadow Copies Service”. But when we talk about IISS Ransomware or other harmful ransomware variants, it usually deletes “Shadow volume copies” and any other backup files using malicious tricks. So if System has already been infected with this type of ransomware virus, then you can’t access “Shadow Copies” using this software. Anyway, you can use “Shadow Explorer” if you want and please check if it works.

How to download/install and use “Shadow Explorer” on Windows PCs?

  • Click on “Download” button below to download the “Shadow Explorer” application

Download Shadow Explorer

  • Double-click on “Installer file” or “Downloaded ZIP file” to install this software
  • Once installed, open “Shadow Explorer” as Administrator

  • Now, from the drop down list you can select from one of the available point-in-time Shadow copies

  • You can right-click on any file or folder and export it
  • After that, choose a folder where the files from “Shadow Copies” are saved to

  • In case if a file or folder in the destination folder already exists, “Shadow Explorer” asks for the confirmation before overwriting. Check the box “Do not show this dialog again”, if you don’t want to show this again.
  • There is a button in the settings (File, Settings) to reset this decision

Recovery of files encrypted by IISS Ransomware or similar ransomware

If you are unable to recover your lost files by using “System Restore”, “Windows Previous versions features” and “Shadow Explorer”, then you can go for another data recovery solution. As said earlier in most of the cases, ransomware variants like IISS Ransomware are capable of deleting “Shadow volume copies” created by Windows OS by default. In this case, you can use “Stellar Data Recovery Software”. This powerful data recovery software is designed to recover all files encrypted by IISS Ransomware.

“Stellar Data Recovery Software” is user-friendly software for Windows and Mac OS X based devices that features include RAID and Virtual drive recovery and repairing all types of corrupted files. It works with both non-bootable and encrypted drives. In simple word, we can say that this powerful data recover software does great job.

This powerful recovery software takes less time to recover files locked by IISS Ransomware and support all known files type and custom types can be added with advanced options menu. “Stellar Data Recovery Software” recovers emails, photos, audios, videos, documents and etc from any storage media devices like hard drives, SSD, DVD, USB drives, and others

On other hand, it recovers crucial data from missing or deleted partitions of hard drive volume in just few steps. It generates a preview of search results during scan so you get to see all the recoverable files before recovery. This preview result appears on screen in “Tree-View” and deleted list formats.

How to download/install and use “Stellar Data Recovery Software” on Windows PCs?

  • Click on “Download” button below to download “Stellar Data Recovery Software” in your computer

Download Stellar Data Recovery Software

  • Double-click on “Installer file” to install the application
  • Once installed, open “Stellar Data Recovery Software”
  • Select type of data you want to recover. Option: All Data, Office Documents, Folders, Emails, Audios and Videos. And then click on “Next”

  • Now, select he folder location, drive or volume you want to scan for data and click on “Scan”

  • Wait for the completion. Once done, select the files and click on “Recover” button to save your recover files

Related posts

Leave a Comment