CryptoWall: What it is and how to protect your systems

Cryptowall 2015, what are my options?

One of my company's customers got struck with Cryptowall 2.0 and it made its way into the offsite backup so all their files are encrypted. Thus eliminating the option of wipe-and-reload.
Are there any reputable tools out yet to decrypt the files? I have also heard rumors that sending in the Bitcoin no longer guarantees a valid decryption key.
How screwed are we?
submitted by mla4343 to computertechs [link] [comments]

Digital Artist: Back Up Your Artworks on an unattached external storage now.

This September seems to be the peak epidemic period of Cryptowall Ransomware and all of its numerous variants.
CryptoWall is a file-encrypting ransomware program that was released around the end of April 2014 that targets all versions of Windows.
When you are first infected with CryptoWall it will scan your computer for data files and "encrypt" them using RSA-2048 encryption so they are no longer able to be opened.
There is no known utility to decrypt RSA-2048 encryption without the private key held as ransom by the evil virus writer. Brute force decryption approach would take around 100 years to decrypt a file.
Once the infection has encrypted the files on your computer drives it will open a Notepad window that contains instructions on how to access the CryptoWall Decryption Service where you can pay a ransom to purchase a decryption program.
The ransom cost starts at $500 USD and after 5 days goes up to $750 with the cost increasing again after another 24 hours to a maximum ransom of $1,500 USD. This ransom must be paid in Bitcoins and sent to a Bitcoin address that changes per infected user.
Besides your local hard drives, it attacked all mapped network drives and all external storage devices attached to your computer (flash drive, USB external hard drive, thumd drives, USB sticks... everything You name it). This virus also encrypted files on your Cloud backup such as Dropbox drive or Google drive too.
It slips by Anti-virus and anti-trojan software on your pc without any detection (The new CryptoWall samples were not detected by any of the 55 antivirus products used on the VirusTotal website when they were discovered Sunday), so more often than not when You found out about the virus, all your files on all your drives have already been encrypted.
Some digital artists have lost all their artworks by not having a reliable unattached incremental back ups or having an unreliable external backup drive which was attached to the pc at the time so the back up was also encrypted.
All your personal documents and artworks could be wiped out in around 2 hours. On the average it takes only around 2 hours to encrypt a 2 terabyte drive.
Please digital artists, back up all your artworks on a reliable external hard drive and disconnect it from your computer after a successful back up and store it in a safe place.
Info about this scary virus
DL ( I have just lost all my drawings without backup) :)
submitted by drawinglearner to ArtistLounge [link] [comments]

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Overview. CryptoLocker and CryptoWall are a form of malware that encrypts files on your device and demands that you pay a ransom to decrypt these files. Instead of paying the criminals behind this attack, use the Code42 app to download your files from a date and time before the infection. DECRYPT_INSTRUCTION.url; Clicking on any of these files left behind in the wake of CryptoWall's infection will lead the end user to step-by-step instructions necessary to carry out the ransom payment. The RSA-2048 encryption key typical for Cryptowall 3.0 has been reported to strike users’ computers and display a ransomware message. Thus, the threat is also dubbed Ransomware RSA-2048 or may be referred as RSA-2048 virus.Once activated, the encryption key ‘locks’ the victim’s files and asks for payment so that a decryption key is provided. Bitcoin Stack Exchange is a question and answer site for Bitcoin crypto-currency enthusiasts. It only takes a minute to sign up. Sign up to join this community CryptoWall 2.0 creates a unique bitcoin payment address for each victim (original version used one bitcoin payment address for all compromised computers). The new version deletes original data files - victims no longer can use data recovery tools to regain control of their encrypted files. Screenshot of CryptoWall 2.0 ransomware:

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