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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).
[2] Due to public outcry about this cryptovirology attack, NIST rescinded the EC-DRBG algorithm from the NIST SP 800-90 standard.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.
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]
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.
Hex dump of the Blaster worm, showing a message left for Microsoft co-founder Bill Gates by the worm's programmer. This timeline of computer viruses and worms presents a chronological timeline of noteworthy computer viruses, computer worms, Trojan horses, similar malware, related research and events.
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]
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.
Rensenware is unusual as an example of ransomware in that it does not request the user pay the creator of the virus to decrypt their files, instead requiring the user to achieve a required number of points in the shoot 'em up video game Undefined Fantastic Object before any decryption can take place.