How Cryptolocker trojan uses dropbox and O2 bills to spread itself?

There are PC threats that no longer pose risk once removed. In contrast to this virus majority, even after a virus Trojan is eliminated, its effects persevere. Files affected by the CryptoLocker ransomware are not recoverable unless the victim agrees to the terms of the imposed buyout and submits Bitcoin payment to the extortionists. Currently Cryptolocker is sitting at the top of the cybercrime hierarchy together with Cerber and Locky.
Operators of the Cryptolocker trojan fraud appear to be exercising their extortion skills in several ways. During the last time they tried to use fake Dropbox emails and fake O2 bills to distribute this ransomware in Europe. Though, the biggest chance to encounter Cryptolocker ransomware and other ransomware viruses is to click on a malicious email attachment. We want to point out that even safe looking Word, Excel or PDF or other documents might include a payload. Thus, you should not rush opening email attachments. First of all, attentively read the message several times, look for the grammar or spelling mistakes, check credentials, etc.
Having completed the trespass, the Cryptolocker ransomware looks for more than 500 file formats on the hard drive, network drives if any, and removable media. In the meanwhile, it ignores some of the system-level directories, including Windows, AppData, Program Files, and Temp. Then, the items matching the hard-coded range of extensions get encrypted with AES algorythm. The look of encoded files is changed drastically: the name of each one gets replaced with a lengthy array of numbers and characters, with the 5 numbers and letters string, appending them at the end.
Specific ransom instruction files are additional attributes of this virus. The ransomware creates documents on the desktop and in temp folder as long as it holds locked files like: rxojsiry.exe or nsz7022.tmpSystem.dll. These basically repeat the same info: pay Bitcoins, get the key, decrypt the data. All in all, submitting the money is the last thing to do. Before even pondering over paying, do not fail to try the techniques that can upset the cybercriminals. What is more, don’t forget to keep all installed software up-to-date and strengthen your computer’s security with anti-malware program. Lastly, you should also make data backups because no one can be 100% protected from the malware.

https://www.virus-entferner.de/2017/03/25/cryptolocker-dropbox-virus-entfernen/

Virus-Entferner Team

The project Virus-Entferner is an informational website, which provides different informations about new ransomware, malware, spyware and trojan. The company is located in Germany. It was founded in 2015 by the students and passionate computer security experts at the university of Duisburg-Essen with the aim to protect people form different web-viruses and to give them information about computer protection. All this time we have been working as the publisher and the developer of virus-entferner.de. Of course, today we are not alone behind this project. We try to support everyone who needs help and who has problems with malware, ransomware and other PC threats.

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This release was published on openPR.