Isak Virus Ransomware
Isak is a harmful software working as common ransomware. Michael Gillespie, the well-known virus researcher, first found this new name in the DJVU ransomware family.
Isak was created for the sole function to encrypt all popular file types. Logically, as quickly as the file encryption is successfully accomplished, the users are not able to get access to them. Isak ransomware includes its own “.isak” to all the encrypted files. For instance, the file “price_list.xls”, when modified by Isak, will be titled as “price_list.xls.isak”. As soon as the file encryption is achieved, Isak puts its own distinct text document (_readme.txt) into all the folders that store the encrypted files.
The message specified by _readme.txt asking for the random os really comparable to the alerts provided by other ransomware hazards belonging to the DJVU family. The warning generally shows that the information has been encrypted and the only solution to get access to it is to use an unique standalone key. Regretfully, this declaration is definitely real.
The method to encrypt the files utilized by Isak is not entirely researched. Nevertheless, there is no doubt that each computer owner may be issued a special decryption key, which is definitely unique. It is very tough to recover the data without the proper key in location.
“Don’t worry, you can return all your files!”, from text file message:
One more peculiarity of the Isak infection is that the users are not able to get access to the key. The decrypting key is hosted on an unique server under the complete control by the scoundrels who have launched the Isak virus into the internet. In order to get the key and bring back the crucial data, the users are informed to contact the scams through e-mail or by telegram and to pay the ransom in the quantity of $980.
The message likewise says that the people should call the Isak authors within 72 hours upon the moment of the data encryption. The alert suggests that by doing so the people will obtain a 50% discount, for that reason, the ransom amount drops down to $490.
Isak crypted your information, nevertheless, it might not be the only danger on your computer. Plus, the ransomware might be concealed deep in the system. To discover and erase the danger entirely, we advise you to refer to the assistance of GridinSoft Anti-Malware .
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No matter what the quantity of the ransom is, we highly recommend that you do not pay the ransom. There is no guarantee that these online crooks will keep their pledges, so they might not care at all what the victims feel about the encryption, even when the quantity of the ransom is gotten into their accounts. Hence, paying ransom typically does not lead to an effective recovery. So, the users may simply lose their money for absolutely nothing.
Likewise, we prompt you not to contact the frauds as they advise. Do not transfer money into their wallets. There are no applications that could split the Isak ransomware or restore the information for free. Therefore, the only proper decision is to bring back the data from possible backups (if available).
Virus Summary
| Name | Isak Ransomware |
| File Extension | isak |
| Type | Ransomware |
| Family | DJVU |
| Short Description | The ransomware encrypts all the data stored on your system and requires a ransom to be paid on your part supposedly to recover your important files. |
| Symptoms | File encryption by the ransomware is performed by means of the AES-256 algorithm (CFB mode) encryption algorithm. Once the encryption is completed, the ransomware adds its special .isak extension to all the files modified by it. |
| Distribution Method | Adware bundles and software cracks |
| Similar Infections | Lokas, Besub, Nusar |
| Isak Removal Tool | GridinSoft Anti-Malware |
| Isak Decryption Tool | Emsisoft Djvu Decryptor |
Do not forget that the Internet is now filled with infections similar to the Isak virus. For instance, this specific threat is generally identical to Brusaf and other ransomware-type infections. These destructive utilities have actually been developed in order to secure the important information and express the need for the users to pay the ransom. All these infections utilize the similar algorithm to generate the particular key for effective files decryption.
Unless the Isak ransomware is still under the development procedure or has got some concealed bugs, it is not possible to bring back the information by hand. Therefore, the only working service to avoid the loss of your crucial information is to frequently keep up-to-date backups of all your vital files.
Another crucial piece of advice is to keep the backups on special storage not connected to your main device. For example, you might store it on the USB Flash Drive, or some external hard disk drive, or by using the cloud data storage services. Keeping the backups on your system drive is very dangerous, since the backup might likewise be encrypted by the Isak ransomware.
Leakages for the Isak ransomware attack.
Isak uses many paths to penetrate the vulnerable computers. It is not certain what particular technique was used in your case, however, the intrusion might happen through the following channels:
- bundling with third-party programs, primarily free apps;
- spam emails from the unidentified senders;
- websites offering complimentary hosting;
- P2P (peer-to-peer) torrent downloads.
There are times when the Isak might camouflage itself as some genuine application, for instance, through the deceptive signals demanding setup of some software upgrade. This is the most common technique utilized by the scams to inject the Isak ransomware files into the system. This way users partially participate in its installation, without clearly comprehending the threat.
Moreover, the frauds might send out unsolicited spam email with tricky notifies motivating the people to open dubious accessories or click on some download links, for instance, those motivating the people to open certain photos, text files, tax files and other information.
No doubt, opening these files or clicking the malicious links might essentially harm the system. Fake Adobe Flash Player update notices may result in the Isak ransomware infiltration. Similarly, downloading the cracked software application may furthermore contain the ransomware installer. The last however not the least, setup of Isak might happen through some Trojan horses that might be installed stealthily into the system and without the user’s direct permission and even approval.
Avoiding the Isak injection.
Naturally, there is no absolute assurance that your computer system will be always without any malware attacks, however, we wish to share some beneficial tips with you to make it much safer. Ensure to pay very close attention while browsing the web and particularly while downloading cost-free programs. Do not open any suspicious e-mail accessories, particularly if the sender is not understood to you.
Do not forget that particular freeware installer might likewise include some other additional apps in the package. These additional applications may be really harmful. It is of utmost value to keep your anti-virus software and your operating system in basic to be constantly appropriately updated.
It is rather sensible that downloading cracked software is unlawful, however, furthermore, such unauthorized software application usage may likewise bring major damage to your computer. For this reason, do not download any cracked programs. Plus, the reality that your current anti-virus did not secure the system from the Isak ransomware is a great reason for you to reassess your choices and change to another program that can render the safeguarding functions on a better level.
Below please find the quotation from the Isak text file:
ATTENTION! Don't worry, you can return all your files! All your files like photos, 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: https://we.tl/t-2P5WrE5b9f 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: restorealldata@firemail.cc Reserve e-mail address to contact us: gorentos@bitmessage.ch Our Telegram account: @datarestore
Screenshot of files with “.isak” extension added by the ransomware:”
Use GridinSoft Anti-Malware to remove Isak ransomware from your computer
1.Download GridinSoft Anti-Malware.
You can download GridinSoft Anti-Malware by clicking the button below:
2. Double-click on the setup file.
When setup file has finished downloading, double-click on the setup-antimalware-ag.exe file to install GridinSoft Anti-Malware on your computer.
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.
3. Press Install button for run GridinSoft Anti-Malware.
3.Once installed, GridinSoft Anti-Malware will automatically run.
4. Wait for the GridinSoft Anti-Malware scan to complete.
GridinSoft Anti-Malware will automatically start scanning your computer for Win Speedup 2018 and other malicious programs. This process can take a 20-30 minutes, so we suggest you periodically check on the status of the scan process.
5. Click on “Clean Now”.
When the scan has completed, 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.
Use Emsisoft Decryptor for restore isak files
You can download Emsisoft Decryptor by clicking the button below:
- Run the decryptor as an administrator. The license terms will show up, which you have to agree to by clicking the “Yes” button.
- Once the license terms are accepted, the primary decryptor user interface opens.
- By default, the decryptor will pre-populate the locations to decrypt with the currently connected drives and network drives. Additional locations can be added using the Add” button.
- Decryptors typically offer various options depending on the particular malware family. The available options are located in the Options tab and can be enabled or disabled there. You can find a detailed list of the available Options below.
- After you have added all the locations you want to decrypt to the list, click the “Decrypt” button to start the decryption process. The screen will switch to a status view, informing you about the current process and decryption status of your files
- The decryptor will inform you once the decryption process is finished. If you require the report for your personal records, you can save it by clicking the “Save log” button. You can also copy it straight to your clipboard to paste it into emails or forum posts if you are asked to.
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