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The Hacker News - Cybersecurity News and Analysis: Search results for Distributed Denial of Service

'Satori' IoT DDoS Botnet Operator Sentenced to 13 Months in Prison

'Satori' IoT DDoS Botnet Operator Sentenced to 13 Months in Prison

June 26, 2020Wang Wei
The United States Department of Justice yesterday sentenced a 22-year-old Washington-based hacker to 13 months in federal prison for his role in creating botnet malware, infecting a large number of systems with it, and then abusing those systems to carry out large scale distributed denial-of-service (DDoS) attacks against various online service and targets. According to court documents, Kenneth Currin Schuchman , a resident of Vancouver, and his criminal associates–Aaron Sterritt and Logan Shwydiuk–created multiple DDoS botnet malware since at least August 2017 and used them to enslave hundreds of thousands of home routers and other Internet-connected devices worldwide. Dubbed Satori, Okiru, Masuta, and Tsunami or Fbot, all these botnets were the successors of the infamous IoT malware Mirai , as they were created mainly using the source code of Mirai, with some additional features added to make them more sophisticated and effective against evolving targets. Even after the orig
Docker Images Containing Cryptojacking Malware Distributed via Docker Hub

Docker Images Containing Cryptojacking Malware Distributed via Docker Hub

June 25, 2020Ravie Lakshmanan
With Docker gaining popularity as a service to package and deploy software applications, malicious actors are taking advantage of the opportunity to target exposed API endpoints and craft malware-infested images to facilitate distributed denial-of-service (DDoS) attacks and mine cryptocurrencies. According to a report published by Palo Alto Networks' Unit 42 threat intelligence team, the purpose of these Docker images is to generate funds by deploying a cryptocurrency miner using Docker containers and leveraging the Docker Hub repository to distribute these images. "Docker containers provide a convenient way for packaging software, which is evident by its increasing adoption rate," Unit 42 researchers said . "This, combined with coin mining, makes it easy for a malicious actor to distribute their images to any machine that supports Docker and instantly starts using its compute resources towards cryptojacking." Docker is a well-known platform-as-a-servic
New DNS Vulnerability Lets Attackers Launch Large-Scale DDoS Attacks

New DNS Vulnerability Lets Attackers Launch Large-Scale DDoS Attacks

May 20, 2020Ravie Lakshmanan
Israeli cybersecurity researchers have disclosed details about a new flaw impacting DNS protocol that can be exploited to launch amplified, large-scale distributed denial-of-service (DDoS) attacks to takedown targeted websites. Called NXNSAttack , the flaw hinges on the DNS delegation mechanism to force DNS resolvers to generate more DNS queries to authoritative servers of attacker's choice, potentially causing a botnet-scale disruption to online services. "We show that the number of DNS messages exchanged in a typical resolution process might be much higher in practice than what is expected in theory, mainly due to a proactive resolution of name-servers' IP addresses," the researchers said in the paper. "We show how this inefficiency becomes a bottleneck and might be used to mount a devastating attack against either or both, recursive resolvers and authoritative servers." Following responsible disclosure of NXNSAttack, several of the companies i
Ukrainian Police Arrest Hacker Who Tried Selling Billions of Stolen Records

Ukrainian Police Arrest Hacker Who Tried Selling Billions of Stolen Records

May 20, 2020Swati Khandelwal
The Ukrainian police have arrested a hacker who made headlines in January last year by posting a massive database containing some 773 million stolen email addresses and 21 million unique plaintext passwords for sale on various underground hacking forums. In an official statement released on Tuesday, the Security Service of Ukraine (SBU) said it identified the hacker behind the pseudonym "Sanix," who is a resident of the Ivano-Frankivsk region of Ukraine, but it did not reveal his actual identity to the media. In January last year, the hacker tried to sell the massive 87-gigabyte database labeled as "the largest array of stolen data in history," which, according to security experts, was just a fraction of the stolen data Sanix collected. According to the authorities, Sanix had at least 6 more similar databases of stolen and broken passwords, totaling in terabytes in size, which also included billions of phone numbers, payment card details, and Social Secu
Dark Nexus: A New Emerging IoT Botnet Malware Spotted in the Wild

Dark Nexus: A New Emerging IoT Botnet Malware Spotted in the Wild

April 08, 2020Ravie Lakshmanan
Cybersecurity researchers have discovered a new emerging IoT botnet threat that leverages compromised smart devices to stage ' distributed denial-of-service ' attacks, potentially triggered on-demand through platforms offering DDoS-for-hire services. The botnet, named "dark_nexus" by Bitdefender researchers, works by employing credential stuffing attacks against a variety of devices, such as routers (from Dasan Zhone, Dlink, and ASUS), video recorders, and thermal cameras, to co-opt them into the botnet. So far, dark_nexus comprises at least 1,372 bots, acting as a reverse proxy, spanning across various locations in China, South Korea, Thailand, Brazil, and Russia. "While it might share some features with previously known IoT botnets, the way some of its modules have been developed makes it significantly more potent and robust," the researchers said . "For example, payloads are compiled for 12 different CPU architectures and dynamically deliver
WARNING: Hackers Install Secret Backdoor on Thousands of Microsoft SQL Servers

WARNING: Hackers Install Secret Backdoor on Thousands of Microsoft SQL Servers

April 01, 2020Ravie Lakshmanan
Cybersecurity researchers today uncovered a sustained malicious campaign dating back to May 2018 that targets Windows machines running MS-SQL servers to deploy backdoors and other kinds of malware, including multi-functional remote access tools (RATs) and cryptominers. Named " Vollgar " after the Vollar cryptocurrency it mines and its offensive "vulgar" modus operandi, researchers at Guardicore Labs said the attack employs password brute-force to breach Microsoft SQL servers with weak credentials exposed to the Internet. Researchers claim the attackers managed to successfully infect nearly 2,000-3,000 database servers daily over the past few weeks, with potential victims belonging to healthcare, aviation, IT & telecommunications, and higher education sectors across China, India, the US, South Korea, and Turkey. Thankfully for those concerned, researchers have also released a script to let sysadmins detect if any of their Windows MS-SQL servers have been
Multiple DDoS Botnets Exploited 0-Day Flaws in LILIN DVR Surveillance Systems

Multiple DDoS Botnets Exploited 0-Day Flaws in LILIN DVR Surveillance Systems

March 21, 2020Ravie Lakshmanan
Multiple zero-day vulnerabilities in digital video recorders (DVRs) for surveillance systems manufactured by Taiwan-based LILIN have been exploited by botnet operators to infect and co-opt vulnerable devices into a family of denial-of-service bots. The findings come from Chinese security firm Qihoo 360 's Netlab team, who say different attack groups have been using LILIN DVR zero-day vulnerabilities to spread Chalubo , FBot , and Moobot botnets at least since August 30, 2019. Netlab researchers said they reached out to LILIN on January 19, 2020, although it wasn't until a month later the vendor released a firmware update (2.0b60_20200207) addressing the vulnerabilities. The development comes as IoT devices are increasingly being used as an attack surface to launch DDoS attacks and as proxies to engage in various forms of cybercrime. What Are the LILIN Zero-Days About? The flaw in itself concerns a chain of vulnerabilities that make use of hard-coded login cred
Mukashi: A New Mirai IoT Botnet Variant Targeting Zyxel NAS Devices

Mukashi: A New Mirai IoT Botnet Variant Targeting Zyxel NAS Devices

March 21, 2020Ravie Lakshmanan
A new version of the infamous Mirai botnet is exploiting a recently uncovered critical vulnerability in network-attached storage (NAS) devices in an attempt to remotely infect and control vulnerable machines. Called " Mukashi ," the new variant of the malware employs brute-force attacks using different combinations of default credentials to log into Zyxel NAS, UTM, ATP, and VPN firewall products to take control of the devices and add them to a network of infected bots that can be used to carry out Distributed Denial of Service (DDoS) attacks. Multiple Zyxel NAS products running firmware versions up to 5.21 are vulnerable to the compromise, Palo Alto Networks' Unit 42 global threat intelligence team said, adding they uncovered the first such exploitation of the flaw in the wild on March 12. Zyxel's Pre-Authentication Command Injection Flaw Mukashi hinges on a pre-authentication command injection vulnerability (tracked as CVE-2020-9054 ), for which a proof-
The Pirate Bay was recently down for over a week due to a DDoS attack

The Pirate Bay was recently down for over a week due to a DDoS attack

October 29, 2019Wang Wei
It seems like the prolonged downtime and technical difficulties faced by The Pirate Bay over the past several weeks were due to a series of distributed denial of service (DDoS) attacks against the widely-popular torrent website by malicious actors. For those unaware, The Pirate Bay was down for more than a week with most visitors displayed a Cloudflare error mentioning that a "bad gateway" is causing problems, while others served with a "database maintenance" message prompting users to check back in 10 minutes. Though the site's moderators did not reveal any details regarding the Pirate Bay downtime, a reputable source with a direct link with the operators told Torrent Freak that the recent Pirate Bay downtime issues "were likely caused by malicious actors who DDoSed the site's search engine with specially crafted search queries." The attacker(s) flooded The Pirate Bay with "searches that break the Sphinx search daemon," effecti
New Cache Poisoning Attack Lets Attackers Target CDN Protected Sites

New Cache Poisoning Attack Lets Attackers Target CDN Protected Sites

October 23, 2019Swati Khandelwal
A team of German cybersecurity researchers has discovered a new cache poisoning attack against web caching systems that could be used by an attacker to force a targeted website into delivering error pages to most of its visitors instead of legitimate content or resources. The issue could affect sites running behind reverse proxy cache systems like Varnish and some widely-used Content Distribution Networks (CDNs) services, including Amazon CloudFront, Cloudflare, Fastly, Akamai, and CDN77. In brief, a Content Distribution Network (CDN) is a geographically distributed group of servers that sit between the origin server of a website and its visitors to optimize the performance of the website. A CDN service simply stores/caches static files—including HTML pages, JavaScript files, stylesheets, images, and videos—from the origin server and delivers them to visitors more quickly without going back to the originating server again and again. Each of the geographically distributed CDN se
Dashboards to Use on Palo Alto Networks for Effective Management

Dashboards to Use on Palo Alto Networks for Effective Management

July 09, 2019The Hacker News
Enterprises should expect to see more cyberattacks launched against them. The data that they now gather and store have made their infrastructures key targets for hackers. Customer data and intellectual property can be sold in the black market for profit, and sensitive information can also be used by hackers to extort them. Enterprises are now aggressively shifting their workloads to the cloud which, while it has many benefits, expands their defensive perimeter and exposes them to further risks as well. As such, organizations are now widely investing in various security solutions in order to comprehensively protect their networks. Gartner expects security spending to exceed $124 billion this year. Solutions such as firewalls and threat prevention tools have increasingly become essential for enterprises. Leading firewall provider Palo Alto Networks , for example, provides companies with various measures to protect their infrastructures. It's currently being used by tens
Telegram Suffers 'Powerful DDoS Attack' From China During Hong Kong Protests

Telegram Suffers 'Powerful DDoS Attack' From China During Hong Kong Protests

June 13, 2019Mohit Kumar
Telegram, one of the most popular encrypted messaging app, briefly went offline yesterday for hundreds of thousands of users worldwide after a powerful distributed denial-of-service (DDoS) attack hit its servers. Telegram founder Pavel Durov later revealed that the attack was mainly coming from the IP addresses located in China, suggesting the Chinese government could be behind it to sabotage Hong Kong protesters. Since last week, millions of people in Hong Kong are fighting their political leaders over the proposed amendments to an extradition law that would allow a person arrested in Hong Kong to face trial elsewhere, including in mainland China. Many people see it as a fundamental threat to the territory's civic freedoms and the rule of law. Many people in Hong Kong are currently using Telegram's encrypted messaging service to communicate without being spied on, organize the protest, and alert each other about activities on the ground. According to Telegram, th
5 Cybersecurity Tools Every Business Needs to Know

5 Cybersecurity Tools Every Business Needs to Know

May 23, 2019The Hacker News
Cybersecurity experts all echo the same thing – cyber attacks are going to get more rampant, and they will continue to pose severe threats against all technology users. Businesses, in particular, have become prime targets for cybercriminals due to the nature of data and information they process and store. 2018 saw a slew of data breaches targeting large enterprises that resulted in the theft of the personal and financial records of millions of customers. Falling victim to cyber attacks can deal with a major financial blow to businesses as the cost of dealing with an attack has risen to $1.1 million on the average. It can even be more devastating for small to medium-sized businesses. 60 percent of these smaller operations close within six months after failing to recover from cyber attacks. But aside from these monetary costs, companies can also lose credibility and their customers' confidence. Needless to say, businesses must improve the protection of their infrastructures
North Korean Hackers Using ELECTRICFISH Tunnels to Exfiltrate Data

North Korean Hackers Using ELECTRICFISH Tunnels to Exfiltrate Data

May 10, 2019Swati Khandelwal
The U.S. Department of Homeland Security (DHS) and the FBI have issued another joint alert about a new piece of malware that the prolific North Korean APT hacking group Hidden Cobra has actively been using in the wild. Hidden Cobra, also known as Lazarus Group and Guardians of Peace, is believed to be backed by North Korean government and known to launch cyber attacks against media organizations, aerospace, financial and critical infrastructure sectors across the world. The hacking group was the same associated with the 2017 WannaCry ransomware menace , the 2014 Sony Pictures hack , and the SWIFT Banking attack in 2016. Now, the DHS and the FBI have uncovered a new malware variant, dubbed ELECTRICFISH , that Hidden Cobra hackers have been using for secretly tunneling traffic out of compromised computer systems. The malware implements a custom protocol configured with a proxy server/port and proxy username and password, allowing hackers to bypass the compromised system'
Europol Now Going After People Who Bought DDoS-for-Hire Services

Europol Now Going After People Who Bought DDoS-for-Hire Services

January 29, 2019Swati Khandelwal
If you were a buyer of any online DDoS-for-hire service, you might be in trouble. After taking down and arresting the operators of the world's biggest DDoS-for-hire service last year, the authorities are now in hunt for customers who bought the service that helped cyber criminals launch millions of attacks against several banks, government institutions, and gaming industry. Europol has announced that British police are conducting a number of live operations worldwide to track down the users of the infamous Webstresser.org service that the authorities dismantled in April 2018. Launched in 2015, Webstresser let its customers rent the service for about £10 to launch Distributed Denial of Service (DDoS) attacks against their targets with little to no technical knowledge, which resulted in more than 4 million DDoS attacks. According to the Europol announcement published on Monday, the agency gained access to the accounts of over 151,000 registered Webstresser users last yea
FBI Seizes 15 DDoS-For-Hire Websites, 3 Operators Charged

FBI Seizes 15 DDoS-For-Hire Websites, 3 Operators Charged

December 21, 2018Swati Khandelwal
The FBI just saved the Christmas. The U.S. Justice Department announced earlier today that the FBI has seized domains of 15 "DDoS-for-hire" websites and charged three individuals running some of these services. DDoS-for-hire , or "Booter" or "Stresser," services rent out access to a network of infected devices, which then can be used by anyone, even the least tech-savvy individual, to launch distributed denial-of-service (DDoS) attacks against any website and disrupt its access. In recent years, multiple hacking groups ruined Christmas Day for millions of gamers by taking down PlayStation, Xbox networks and other gaming servers using massive DDoS attacks. "Booter services such as those named in this action allegedly cause attacks on a wide array of victims in the United States and abroad, including financial institutions, universities, internet service providers, government systems, and various gaming platforms," the DoJ said. &qu
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