Category Ransomware

Articles about removing ransomware that blocks Windows or browsers and can encrypt your data and demand ransom.

How to remove Arena Ransomware and decrypt .arena files

Arena Ransomware is successor of Dharma Ransomware from CrySis crypto-virus family. This malware uses asymmetric cryptography to encrypt users files, such as documents, photos, music, videos, games etc. This version appends .arena extension to affected files. After finishing encryption process various versions of Arena Ransomware can create different text or html files with instructions: FILES ENCRYPTED.txt, info.hta, Your personal data are encrypted!.txt, _HELP_INSTRUCTION.TXT. Ransomware can demand payment from 0.3 to 1 BitCoins (which is equivalent to $2000 - $6000) for decryption services, but usually malefactors don't send any keys.

How to remove Sage 2.2 Ransomware and decrypt .sage files

Sage 2.2 Ransomware is successor of Sage 2.0 Ransomware and Sage Ransomware based on CryLocker family. It was changed in terms of design of desktop background and payment pages. It also uses new filenames for instructions file and image file (!HELP_SOS.hta and !HELP_SOS.bmp). Virus still adds .sage file extension to encrypted files and uses Microsoft SAPI voice to read the message on your desktop aloud. This is done to create negative psychological effect. Latest version of this ransomware demands 0.17720 BTC or almost $1000 for decryption.

How to remove Bad Rabbit Ransomware and decrypt your files

Bad Rabbit is new wide-spread ransomware, that uses RSA-2048 and AES cryptography. It mostly targets enterprises in Eastern Europe. Security experts claim, that Bad Rabbit is related to previously distributed Petya и NotPetya viruses. Currently, several governmental institutions and banks were attacked by this virus in Russia, Ukraine, Turkey, Germany. Hackers demand ransom of 0.05 BTC (BitCoins), which is ~280$ and threaten to increase this amount if not paid within certain time gap. We strongly recommend not to send money, as in most cases malefactors do not send keys.

How to remove Ykcol Ransomware and decrypt .ykcol files

Ykcol is new ransomware virus from Locky ransomware family. It uses RSA-2048 and AES-128 cryptography to encrypt user data. After encryption ransomware appends .ykcol extension to all affected files and modifies filenames using certain pattern. Malware changes filenames to random combination of 36 letters with the following sequence: [8_random_letters]-[4_random_letters]-[4_random_letters]-[8_random_letters]-[12_random_letters].ykcol. Malefactors offer users to decrypt their files for 0.15 BTC (Bitcoins) or ~290$. As a rule, no decryption key is sent after the payment. Malware also creates 3 files: Ykcol.html, Ykcol_[4_digit_number].html, and Ykcol.bmp.