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Hidden Tear is the first open-source ransomware trojan that targets computers running Microsoft Windows [1] The original sample was posted in August 2015 to GitHub. [2]When Hidden Tear is activated, it encrypts certain types of files using a symmetric AES algorithm, then sends the symmetric key to the malware's control servers. [3]
Download as PDF; Printable version; In other projects ... more than double the number of ransomware samples that quarter than ... of file-encrypting ransomware was ...
Hive (also known as the Hive ransomware group) was a ransomware as a service (RaaS) operation carried out by the eponymous cybercrime organization between June 2021 and January 2023. The group's purpose was to attack mainly public institutions to subsequently demand ransom for release of hijacked data.
vx-underground, also known as VXUG, is an educational website about malware and cybersecurity. [1] [2] It claims to have the largest online repository of malware. [3]The site was launched in May, 2019 and has grown to host over 35 million pieces of malware samples.
Even though the ransomware claimed TeslaCrypt used asymmetric encryption, researchers from Cisco's Talos Group found that symmetric encryption was used and developed a decryption tool for it. [9] This "deficiency" was changed in version 2.0, rendering it impossible to decrypt files affected by TeslaCrypt-2.0.
[56] [57] [58] Registering a domain name for a DNS sinkhole stopped the attack spreading as a worm, because the ransomware only encrypted the computer's files if it was unable to connect to that domain, which all computers infected with WannaCry before the website's registration had been unable to do. While this did not help already infected ...