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The process would repeat for each infected system, eventually roping them into a botnet used to perform DDoS attacks. The worm would scrape email addresses and spread the virus to the victim’s contacts. Mydoom targeted computers running Microsoft Windows, where the infected systems created network openings, allowing it to be remotely accessible. After the initial detection on January 26, 2004, it became the fastest-spreading worm ever, a record it holds even in 2021. On a financial scale, Mydoom is known to be the worst and most expensive virus outbreak in history, causing damage of $38 billion in 2004. The group reportedly used the sophisticated botnet as a for-hire product against anti-spam websites, among others. Upon investigation, the origin of Strom Worm was traced back to Russia, and the Russian Business Network is often credited for the attack. These files were used to carry out various functions, including stealing sensitive user information, delivering spam emails to spread the malware, and launching Distributed-Denial-of-Service (DDoS) attacks.

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Combining multiple layers of attacks, once infected, it would download a package of executable files on the affected systems. Strom Worm is a misnomer, as it had the characteristics of a Trojan horse and a worm. As the unsuspected victims opened the attachments, Storm Worm, a Trojan horse malware, spread to as many as 1 million computers in Europe and America. Storm Worm, Trojan (2007)Īs severe storms swept over Europe in January 2007, thousands of users received a malicious email disguised as a weather bulletin containing updates. According to a NY Times report, this worm was developed by a co-operation between the Israeli Intelligence and US National Security Agency, although none of the countries have openly taken responsibility.Įven though the threat has dwindled since the purported retirement of the original Zeus creator, the virus still lives on in numerous variations based on its source code. In one of the most sophisticated and controversial cyberattacks of all time, Stuxnet, a malicious computer worm, reportedly targeted Iran’s nuclear facility.

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Like all ransomware attacks, the user had to pay the said amount in Bitcoin however, the virus had no decryption code to restore the data. Petya is different from other ransomware variants as it targets the Master Boot Record (MBR) in addition to system file encryption. Related: 5 Surefire Things That’ll Get You Targeted by Ransomware The malware first came to light in March 2016 but became famous after targeting banking and other institutions, primarily in Ukraine and Russia, in 2017. Ransomware Petya (and its variant, NotPetya) uses the same EternalBlue exploit as WannaCry to remotely infect unsuspecting victims via an email phishing attack. In June 2017, the internet woke up to an enhanced ransomware attack spreading like wildfire, leaving the affected systems unusable. Rootkits-A covert computer program to give hackers remote access to a victim’s computer without being detected.Keyloggers-A potent tool to steal user information by recording keystrokes on victims’ computer.Worms-Computer worm malware usually spreads copies of itself from computer to computer, often via email contacts of the victims.

#EAZYDRAW TROJAN MALWARE SOFTWARE#

Trojans-Malware software often disguised as a legitimate tool designed to gain access to user data.

Spyware-Covertly gathers personal and sensitive information about a person or organization.

Ransomware-Encryption based malware that disables access to user data with a demand for ransom.

Adware-Advertisement-supported software serving unwanted and often malicious ads without user consent.

Here are the common types you are most likely to encounter. Hackers use 11 common types of malware attacks for the purpose of data theft and other illegal activities. So what are the most notorious malware attacks that changed the way we use and know computers? What Are the Common Types of Malware Attacks?