4/13/2023 0 Comments Email backup wizard fullWe have analyzed and researched thousands of ransomware infections, and this experience allows us to infer that decryption is usually impossible without the attackers' interference. Additionally, it states that seeking aid from third-parties can result in an increased financial loss since their fee is added to the ransom. The note warns that renaming the encrypted files or using third-party decryption software – may result in permanent data loss. However, it does indicate that the payment will have to be made in Bitcoin cryptocurrency.īefore meeting the ransom demands, victims can test decryption by sending the cyber criminals up to five files (within certain specifications). This message does not include the size of the ransom that the victims must pay to recover their data. The ransom note in the pop-up provides more information regarding the ransomware infection. It informs victims that their files have been encrypted and instructs to email the attackers in order to decrypt them. ![]() Screenshot of files encrypted by Usr ransomware: For example, a file initially titled " 1.jpg" appeared as " the encryption process was created, ransom notes were created in a pop-up window (" info.hta") and text file (" info.txt"). ![]() The filenames of the affected files were appended with a unique ID assigned to the victim, the cyber criminals' email address, and a ". ![]() Once we executed a sample of Usr on our test machine, it began encrypting files. This malicious program is part of the Phobos ransomware family. ![]() Our research team found the Usr ransomware while investigating new submissions to VirusTotal.
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