Ccew Virus Ransomware (.ccew File) Removal

What is Ccew ransomware?

Ccew ransomware is part of the STOP/Djvu ransomware family, which typically targets individuals. This focus is evident not only through statistics but also by examining the specific distribution methods and actions this malware undertakes post-infection. It employs the Salsa20 cipher for file encryption, a method that is effectively impervious to cracking. All decryption keys are stored on a remote server under the control of cybercriminals.

This malware enacts several modifications to system configurations, notably disabling Microsoft Defender and hindering the execution of anti-malware software installation files. These adjustments are facilitated through Group Policies, a Windows interface that provides access to advanced system settings.

Ccew ransomware often proliferates via questionable websites that offer paid programs for free. These sites attract visitors with the allure of bypassing payment, providing hacked versions of software that circumvent licensing requirements. During the hacking of the source code, perpetrators can seamlessly integrate any form of malware. The specific type of malware incorporated may vary based on the payment made for its distribution.

Alternative vectors for the spread of Ccew ransomware include so-called hack tools. Applications such as keygens, Windows activation utilities, cheat engines, and similar tools serve as ideal conduits for malware. Utilizing these tools not only exposes users to the risk of Ccew infection but also poses the threat of legal repercussions for the use of unlicensed software.

Encryption process

The Ccew ransomware uses the Salsa20 encryption algorithm. That is not the strongest method, but it still provides an overwhelming amount of possible decryption keys. To brute force the 78-digit number of keys, you need 3.5 unvigintillion years (1*10^65), even if you use the most powerful regular PC. Quantum computers can show a bit better results, but it is still too slow to get your files back while you are alive.

The exact algorithm of encryption is next: malware scans each folder for the files it is able to encrypt. Then, when it finds the target, it makes a copy of your file, removes the original one, encrypts the copy and leaves it instead of the removed original. Such a procedure is done to prevent the situation when you have already opened the file, so ransomware is not able to read it because of the Windows restrictions. To each encrypted copy, the virus adds the specific extension - ".ccew". Then, ransomware creates a _readme.txt file in the folder where the encrypted file is located, and goes to the next folder.

Such an encryption method can be exploited for file recovery. Since the original file is deleted, you may try to recover it using the file recovery tools. The less time is passed - the bigger the chance to get your files back, so hurry up!

Another specific moment that can help you to use the files even after the encryption is the fact that Ccew ransomware encrypts only the first 150KB of each file. Hence, you can try to run a big file, such as video or music, without the encryption. Similar feature also works with other ransomware families - Dharma, Conti and Makop encrypt the same 150KB.

Ransom note: _readme.txt

Ransom note is the same for the whole ransomware family. In fact, it is one of the main signs of to which family the certain ransomware belongs. Here is the typical note for STOP/Djvu family:

External Links:

🔗 HowToFix.Guide: How To Decrypt .ccew Files?

Indicators of Compromise(IOC)

File Name	MD5	File Size
📜 SAMPLE.EXE	afa0d7107e8b219be38279985ace8033	706824
📜 SAMPLE.EXE	6216520e419d1faa2370f2c420b66bb6	830464
📜 SAMPLE.EXE	5fe14a6b9d784c2c56f225c1b349f704	830976
📜 SAMPLE.EXE	347a4ee8889e004f05fca8f531de8bc6	830464
📜 SAMPLE.EXE	99389960668b1fb0368ddc9fb995fe5c	799744
📜 SAMPLE.EXE	4789cca307a4ef11871453e67e02ca20	800768
📜 SAMPLE.EXE	17d3fa5451892c9a783d4f1a832d5089	799744
📜 SAMPLE.EXE	148780e7137c1145d5c60fcd4640ce16	800768
📜 SAMPLE.EXE	abf65a3a50f6e4a1fa12bc72adf23305	800256
📜 SAMPLE.EXE	215cd59e5305f9c742452c7341ac6743	786944