Cosakos is ranked by our malware research team as the DJVU cryptoware family. Another variants of this family is Nvetud, Mogranos, Nelasod, and some others. There are certain antiviruses that bypass it as well as therefore permitting its intrusion. Actually, we have to call it that, because of the “.cosakos” extension that it appends at the end of your files.
Let’s clarify. Cosakos virus attacks your PC through slyness and knack also. After that, once intruded it makes use of AES or RSA encryption algorithms to hold your data.
Then, they blackmail you for their decode. After Cosakos slips right into your system, it places every one of your records under isolation. It appends its very own extension “.cosakos” at the end, thus making files unavailable.
Files with “.cosakos” extension appended by the Cosakos virus:
It attacks files, registers, photos, songs, filmings, all of it! Thereafter, you can’t longer access them. Displacing the data or redefining it will not assist. The only means to release your documents from the ransomware’s keep is decoding. The malware is aimed you to pay buyout currency if you wish to get your data back. It makes that clear (in the blackmail note) it will decipher data after payoff.
The note is generally a text file, left on your desktop. You can also locate it in any folder that has encrypted records. It describes your concerns and also offers you a solution. According to Cosakos, the only means to unblock your data is with a unique decryption code. And also, to obtain it you have to pay a payoff. The price is $980, as well as it’s generally asked for in cryptocurrency.
The file “_readme.txt” by the Cosakos virus states the following information:
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-WbgTMF1Jmw 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@example.com Reserve e-mail address to contact us: firstname.lastname@example.org Our Telegram account: @datarestore Your personal ID: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Do NOT send money for decrypt of “cosakos” files!
The Cosakos ransomware guarantees, to send you the key after you render. As well as, that’s it. That’s all you obtain – a promise. You have no guarantees that conformity results in something favorable. Do not rest on words of virtual crooks. That is people, that will scam you. Do NOT give them a cent. Don’t call them Do NOT comply with their needs.
How did my PC got harmed by Cosakos?
Your computers get corrupted with the Cosakos malware because of your incapacity to be watchful. Some people do not pay attention to essential details while surfing the web or installing various applications.
The Cosakos malware uses the old but good invasive ways to deceive you. And slips past you undetected. That involves disguising behind broken web links, sites, and torrents. It makes use of free software as a way to hide itself. And forms as a fake system or software update. Like, Adobe Flash Player or Java.
Yet more often yes than not, it uses junk emails. You open an email that seems to find from a well-known company. Like, Amazon or PayPal. And, the email prompts you to click a web link, or download and install an program. If you do, you end up with ransomware.
Bear in mind that these types of risks are cheating your oscitancy. They need you to hurry and miss doing due diligence. That eases their covert pervasion. They rely on you to leave your fate to chance. Do not! Don’t pick rashness over care. One keeps infections out. The other welcomes them in.
Therefore, do not send them a fee. Don’t connect to the internet frauds. If you do, you’ll regret it. It’s a futile effort to recover your records, as well as it will not finish well for you. Below’s why.
There are a few occasions that can unravel when you see the redemption currency note on your display. Claim, you make a decision to conform. You contact to the bleeders, disburse their blackmail cash, and wait. You wait on them to send you the deciphering trick they promised. Well, what happens if they do not?
Nevertheless, you have no guarantees. All, you rest on, is a promise. Can you absolutely think words of cyber kidnappers? The answer is ‘No.’ These are individuals, who will certainly disenchant you. Don’t give cash! There’s also another alternative.
They can send you a decoding key. However, when you effort to apply it, it fails to work.
Yes, they can send you the wrong code. After that, you have much less currency, as well as your data continues to be encrypted. Don’t disburse! And also your optimum strategy isn’t a reason for enthusiasm. What takes place after you give the redemption cash, obtain the appropriate trick, as well as totally free your documents? Well? Consider it. You paid money to eliminate a sign and symptom, yet not the infection triggering it.
So, you eliminate the enciphering, yet the Cosakos ransomware stays. It’s still sneaking in the hooks of your system, complimentary to attack once again. After that, you’re back at a new start.
Why is Cosakos unsafe?
Futhermore, to encipher a injured’s records, the Cosakos ransomware has also started to install the Azorult Spyware on PC to steal account data, cryptocurrency wallets, desktop documents, and more.
So, your PC obtained assaulted by Cosakos and also probably you have actually lost time trying to eliminate it manually. We are absolutely positive that the remedy below will certainly be usefull in removing Cosakos in an automated way.
How to protect PC from Cosakos ransomware?
However, let us initially speak about obviation of such virus invasions in the future. There is something exists that you can do to escape this kind of menacing menace from entering into your device previously?
There are a couple of things we wish to talk about here. First one is your personal blame for being unbelievably careful while you utilize your device and largely while you browse the web. When exploring your e-mail and see some distrustful attachments consisted of, do not hurry to view them.
The same way, when you get on Facebook and social networks also someone you are in touch with sends you messages including accessories, be very thoughtful, especially if these are some exe-extension files.
The second thing to take into consideration is examining the trustworthiness of your current anti-malware program. Sadly, there are plurals safety and security programs presently that just state to be credible, whereas in times of real infection intrusions they simply unable to do the task as claimed.
In case Cosakos penetrated into your device this specifies that your current anti-virus did not do its promoted assignment as well as really fell short to secure your system. So obviously it is a point for you to overrate your choices and also definitely switch over to some other application that can most definitely procure the wanted grade of protection.
Not all antiviruses are good
We can also discuss some portion of users that like not to have any kind of protection software program at all. Definitely, this is a huge error from their side, due to the fact that presently the web has dozens of cyber hazards that may secretly invade perceptive systems, particularly those that are not appointed with some standard level of protection.
So, having antivirus permanently operating and guiding your device is a necessary point in today’s cyber world.
Cosakos is getting on the nerves of many people, so you’re not its only victim.
People ask how to repair the problem effectively. Removal of the infection manually may be a long-lasting undertaking and can damage other important system files. Scan your PC with GridinSoft Anti-Malware to detect and delete Cosakos in the right way.
Click to Download GridinSoft Anti-Malware.
Cosakos removal guide
STEP 1. Recover files from Cosakos ransomware encryption
Cyber Security specialist Michael Gillespie createed decoder for some versions and variants of this family ransomware.
But it work when the Cosakos virus used an offline key for encryption.
You can download free decryption tool here: STOPDecrypter. This tool includes a “Brute Force” algorithm for variants which use XOR encryption, a simple symmetric cipher that is relatively easy to break.
The decrypter tool requires victims to provide an encrypted and original file pair greater than 150KB.
If key does not found, we advice to restore your PC
There are a lot of different ransomware viruses on the internet. Some of them are more dangerous than the others because they not only leaving malicious processes to protect themselves, but also removing backups of your system to make the recovery process impossible.
Please Note: Not all ransomware infections are able to remove backups of your system, so it is always worth to try a windows recovery.
We recommend use Safe Mode with command prompt to safely perform a recovery of your files. You will have to reboot your computer, so you better save this instruction:
STEP 2. Removing Cosakos ransomware malicious files
Once the recovery process is complete, you should consider scanning your computer with a GridinSoft Anti-Malware in order to find any traces of Cosakos infection. Though some ransomware viruses are removing themselves right after the encryption of your files, some may leave malicious processes on your computer for special purposes of cyber criminals.
Run GridinSoft Anti-Malware and choose the scan type, which is suitable for your needs. Of course, for the accuratest scan results we recommend you to choose the “Full Scan”.
Give Anti-Malware a little time to check your system:
Move to quarantine all the viruses and unwanted files, that you see in the results list:
Enjoy the malware removal process:
Use of On-run protection may additionaly prevent different types of cyber attacks, our protect may flag the downloader of the ransomware as a malicious application preventing the download of Cosakos.
STEP 3. Prevent the Cosakos virus infection
Besides the protection tool, you should read and learn few simple rules. Follow them every time you work on your computer and your will decrease chances of your infection to a minimum:
- Don’t open suspicious spam letters. No way! Be very careful with your downloads. Download and install applications preferably from its official website.
- Do backups of your important files regularly. Storing your really important files in few different places is a good decision.
- Keep your PC free from adware, hijackers and PUPs The infected computer will be more likely compromised with other malicious software, and ransomware is not an exception in this case.
- Don’t panic and be reasonable. Don’t pay the ransom fee right after you got infected, it is always best to search on the internet for some answers. It is possible that someone have developed a decryption tool that might help you.