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Ransomware attacks are typically carried out using a Trojan, entering a system through, for example, a malicious attachment, an embedded link in a phishing email, or a vulnerability in a network service. The program then runs a payload, which locks the system in some fashion, or claims to lock the system but does not (e.g., a scareware program).
Conti ransomware employs various stealth techniques, including the use of BazarLoader, to infiltrate its target systems. The ransomware is designed to encrypt files and render them inaccessible until a ransom is paid. It is often delivered through phishing emails, exploit kits, or compromised websites. [1]
Zagala also created Jigsaw v.2., a successor to the Jigsaw ransomware, which worked similarly to Thanos by encrypting the victim's files and asking for a ransom. This time, however, if the user tried to remove the malware from their computer or tried to reboot it, the software would "punish" the victim by erasing the entire harddrive .
A logic bomb is a piece of code intentionally inserted into a software system that will set off a malicious function when specified conditions are met. For example, a programmer may hide a piece of code that starts deleting files (such as a salary database trigger), should they ever be terminated from the company.
The article also mentions the most active ransomware groups; Royal, BlackCat, and Medusa. Royal is a fairly new ransomware group and was initially observed in early 2022. MedusaLocker employs phishing and spam email campaigns to infiltrate victim networks, attaching the ransomware directly to the emails. [14]
Jigsaw is activated if a user downloads the malware program which will encrypt all user files and master boot record. [4] Following this, a popup featuring Billy the Puppet will appear with the ransom demand in the style of Saw's Jigsaw (one version including the "I want to play a game" line from the franchise) for Bitcoin in exchange for ...
[2] Due to public outcry about this cryptovirology attack, NIST rescinded the EC-DRBG algorithm from the NIST SP 800-90 standard. [ 3 ] Covert information leakage attacks carried out by cryptoviruses, cryptotrojans, and cryptoworms that, by definition, contain and use the public key of the attacker is a major theme in cryptovirology.
LockBit is a cybercriminal group proposing ransomware as a service (RaaS). Software developed by the group (also called ransomware) enables malicious actors who are willing to pay for using it to carry out attacks in two tactics where they not only encrypt the victim's data and demand payment of a ransom, but also threaten to leak it publicly if their demands are not met.