The threat of DDoS ransomware
Estimated reading time: 6 minutes
Is the threat of a large-scale DDoS attack enough to convince organizations to bow to a ransomware attack?
It might be a good time for companies to invest in DDoS protection , as hackers have begun to use the threat of large-scale DDoS attacks to carry out ransomware attacks on organizations .
According to a new blog post from Cloudflare, a major company, in the Fortune Global 500, was the target of a DDoS ransomware attack ( RDDoS ) in late 2020. The attacking group claimed to be Lazarus Group , North Korea’s largest and most active hacking division .
This extortion attempt was part of a larger trend of ransom campaigns that has been developing throughout the past year . Cybercriminals will likely continue to use similar methods, as they have been quite successful.
What is a DDoS Ransomware?
Unlike a ransomware attack in which cybercriminals enter a company’s network in order to block their files, RDDoS attacks use the threat to obscure the Dell website. ‘company with traffic overload and this can be crippling for business.
Just as an organization can use cloud backup and other similar services to protect its data from being blocked following a ransomware attack, DDoS protection ensures that a company’s website remains secure if it is suddenly flooded with traffic overload.
What is a DDoS attack?
Before continuing and to better understand what we are talking about.
DDoS is an acronics which means Distributed Denial of Service . Attacks of this type target websites and online services. The goal is to flood the site with more traffic than the server or network can accommodate . The purpose is to make the website or service unusable.
Traffic can consist of inbound messages, connection requests or fake packets. In some cases, victims are threatened with a DDoS attack or attacked at a low level . This attack can be combined with an extortion threat than a more devastating attack unless the company pays a ransom in cryptocurrency . In 2015 and 2016, a criminal group called the Armada Collective repeatedly extorted money from banks, web host providers and other companies using this method.
How Do DDoS Attacks Work?
The theory behind a DDoS attack is simple: flood a server with requests so that it reaches the limit that available resources allow. If the attack is successful, your server, service, website or network is rendered inoperable.
The primary way a DDoS is accomplished is through a network of remotely controlled, hacked or bot computers . These are often called “zombie computers”, we have also seen them in the techniques of Zombie Phishing . These zombies , organized in networks called botnets , are used to flood websites, servers and networks with more data than they can accommodate.
Botnets can send more connection requests than a server can handle or send huge amounts of data that exceed the bandwidth capabilities of the targeted victim. Botnets can range from thousands to millions of computers controlled by cybercriminals. Your computer could be part of a botnet without you knowing.
What are the symptoms of an attack?
DDoS attacks have distinctive symptoms . The problem is that the symptoms are so similar to other problems you may have with your computer that it can be difficult to understand without a professional diagnosis. Symptoms of a DDoS include:
- – Slow file access, both locally and remotely
- – Inability to access a particular website
- – Logout from the Internet
- – Problems accessing all websites
- – Excessive amount of email spam
Most of these symptoms can be difficult to label as unusual . However, if two or more occur over long periods of time, you could be the victim of a DDoS and check them out.
Phenomenology of a DDoS Ransomware Attack
A DDoS ransomware attack is like pointing a gun at someone and asking them for their wallet. It is not known if the gun is real (or loaded), but to avoid an unpleasant misunderstanding, the money is handed over.
In these attacks, in fact, the hackers threaten to carry out the attack, but have not yet performed any. In some cases they launch a minor attack as a demonstration action.
The attack covered in the Cloudflare article started like many other attacks, with ransom emails sent to employees of the organization. These emails contained a note that read:
Please do a Google search of “Lazarus Group” to take a look at some of our previous work. Also, search for “NZX” or “New Zealand Stock Exchange” in the news. You don’t want to be like them, do you?
The current price is 20 Bitcoin (BTC). It’s a small price to pay for what will happen if your entire network goes down. Is it worth it? You decide!…
If you decide not to pay, we will start the attack on the indicated date and will keep it until you do. We will completely destroy your reputation and make sure that your services remain offline until you pay… “.
The attackers then began sending a large amount of traffic to one of the company’s global data centers , firing gigabits of data per second to a single server. This led to a DDoS event and generated a series of unpleasant inconveniences.
Next, the criminals launched an attack at the end of a working day that was difficult to mitigate due to the fact that the organization was still using services to mitigate previous attacks.
Mitigating DDoS attacks can be quite difficult when an attack is already underway, which is why companies should consider using dedicated and proactive DDoS protection .
We will likely see an increase in similar attacks this year , so now is the time to take the necessary precautions or risk having the company’s website taken down or worse, having to pay a ransom in order to continue with the services offered.
The SOD proposal for companies
Due to the possibility that these DDoS Ransomware attacks become more and more frequent, we think we are a good time to evaluate one of our services in this regard.
CDN against DDoS ransomware attacks
One way to mitigate attacks is by using CDN ( Content Delivery Network ) services such as Cloudflare . These services distribute a static copy of the site on their servers around the world. When the site is requested by a client, the request is processed by the closest CDN server, reducing the loading time.
The use of this type of service filters access to the company site by distributing traffic to other servers that keep a copy of the site.
In this way, not only is the site loaded via the CDN server closest to the user, reducing the loading time, but the traffic is distributed territorially and what actually reaches the server is a fraction of the real one .
For our customers who use different services, it is necessary to design an ad-hoc solution. Contact us to find out more.
- Hadoop Open Data Model: “open” data collection
- Pass the Ticket: how to mitigate it with a SOCaaS
- Use cases of a SOCaaS for companies part 2
- Use cases of a SOCaaS for companies part 1
- NIST Cybersecurity Framework
- “Left of boom” and “right of boom”: having a winning strategy
- Smishing: a fraud similar to phishing
- Network Traffic Analyzer: an extra gear for the Next Gen SIEM
- Backup as a Service (2)
- Cloud Conference (3)
- Cloud CRM (1)
- Cloud Server/VPS (20)
- Conferenza Cloud (4)
- ICT Monitoring (4)
- Log Management (2)
- News (18)
- ownCloud (4)
- Privacy (7)
- Secure Online Desktop (14)
- Security (14)
- Web Hosting (15)
- Armis Now Valued at $3.4B November 29, 2021One Equity Partners led the $300 million round, increasing the valuation of Armis from the $2 billion valuation it achieved less than 8 months ago.
- Stellar Cyber Raises $38M Series B to Address Need to Provide 360-Degree Visibility Across Entire Attack Surface November 29, 2021Oversubscribed round, including Samsung, rewards technical innovations and rapid market adoption, positions company for continued leadership.
- 9 out of 10 Healthcare Organizations Provide Telehealth Services, Yet Almost Half Face Patients' Mistrust Toward Privacy November 29, 2021Kaspersky surveyed healthcare decision-makers to learn how the digital transformation of the industry is going and which problems they believe should be solved to create a world in which everyone can gain access to quality care.
- IKEA Email Systems Targeted in Cyberattack November 29, 2021Attackers are reportedly targeting IKEA employees in a phishing campaign that leverages stolen reply-chain emails.
- Google Analyzes Methods Behind GCP Workload Attacks November 29, 2021The vast majority of cloud workload compromises stem from poor security configurations or compromised passwords, while cryptojacking is the common payload, research shows.
- Phishing Remains the Most Common Cause of Data Breaches, Survey Says November 29, 2021Despite heightened concerns over ransomware, fewer organizations in a Dark Reading survey reported being an actual victim of a ransomware attack over the past year.
- Over 1,000 Individuals Arrested in Global Cybercrime-Fighting Operation November 29, 2021HAECHI-II initiative represents Interpol's stepped-up efforts to tackle the operators of financially motivated online scams and other cyberattacks.
- Panasonic Hit in Data Breach November 29, 2021Tech firm reveals that data on one of its file servers was accessed by attackers.
- NanoLock Security and Waterfall Security Partner to Deliver OT Security for Industrial and Energy Applications November 29, 2021The solution combines NanoLock’s device-level, zero-trust protection with Waterfall’s hardware-enforced IT/OT perimeter protection to provide a powerful OT security solution that mitigates cyber events from both IT and OT networks.
- Paving the Road to Zero Trust With Adaptive Authentication November 29, 2021A gradual transition to a world beyond passwords predisposes zero-trust projects to success.
- Re: Responsible Full disclosure for LiquidFiles 3.5.13 November 23, 2021Posted by Riccardo Spampinato on Nov 23Dear Full Disclosure Team, This is to ask you to kindly update our responsible disclosure. Following the updated advisory. =============================================================================== title: LiquidFiles Privilege Escalation product: LiquidFiles v3.5.13 vulnerability type: Privilege Escalation severity: High CVSSv3 score: 8.8 CVSSv3 vector:...
- Backdoor.Win32.BlueAdept.02.a / Remote Buffer Overflow November 21, 2021Posted by malvuln on Nov 21Discovery / credits: Malvuln - malvuln.com (c) 2021 Original source: https://malvuln.com/advisory/694d21679cc212c59515584d1b65dc84.txt Contact: malvuln13 () gmail com Media: twitter.com/malvuln Threat: Backdoor.Win32.BlueAdept.02.a Vulnerability: Remote Buffer Overflow Description: The malware listens on TCP port 6969, after connecting to the infected host TCP ports 6970, 6971 are then opened. The newly opened port 6970 […]
- Backdoor.Win32.BNLite / Remote Heap Based Buffer Overflow November 21, 2021Posted by malvuln on Nov 21Discovery / credits: Malvuln - malvuln.com (c) 2021 Original source: https://malvuln.com/advisory/a8818da39c7d36d9b5497d1a875798b8.txt Contact: malvuln13 () gmail com Media: twitter.com/malvuln Threat: Backdoor.Win32.BNLite Vulnerability: Remote Heap Based Buffer Overflow Description: The malware listens on TCP port 5000. Third party attackers who can reach the system can send a specially crafted payload to trigger […]
- Backdoor.Win32.Agent.ad / Insecure Credential Storage November 21, 2021Posted by malvuln on Nov 21Discovery / credits: Malvuln - malvuln.com (c) 2021 Original source: https://malvuln.com/advisory/d2b933ebadd5c808ca4c68ae173e2d62.txt Contact: malvuln13 () gmail com Media: twitter.com/malvuln Threat: Backdoor.Win32.Agent.ad Vulnerability: Insecure Credential Storage Description: The malware listens on TCP port 87, its default password "hoanggia" is stored in the Windows registry in cleartext under "clrprv.oo" in...
- Backdoor.Win32.Wollf.h / Hardcoded Cleartext Password November 21, 2021Posted by malvuln on Nov 21Discovery / credits: Malvuln - malvuln.com (c) 2021 Original source: https://malvuln.com/advisory/5494b78dcfaf16aa43b5dbd563dc5582.txt Contact: malvuln13 () gmail com Media: twitter.com/malvuln Threat: Backdoor.Win32.Wollf.h Vulnerability: Hardcoded Cleartext Password Description: The malware listens on TCP port 7300 and runs with SYSTEM integrity. Authentication is required for remote user access. However, the password "grish5800" is...
- Backdoor.Win32.Wollf.a / Weak Hardcoded Password November 21, 2021Posted by malvuln on Nov 21Discovery / credits: Malvuln - malvuln.com (c) 2021 Original source: https://malvuln.com/advisory/52d1341f73c34ba2638581469120b68a.txt Contact: malvuln13 () gmail com Media: twitter.com/malvuln Threat: Backdoor.Win32.Wollf.a Vulnerability: Weak Hardcoded Password Description: The malware listens on TCP port 1698 and runs with SYSTEM integrity. Authentication is required for remote user access. However, the password "23706373" is weak...
- Backdoor.Win32.Antilam.11 / Unauthenticated Remote Command Execution November 21, 2021Posted by malvuln on Nov 21Discovery / credits: Malvuln - malvuln.com (c) 2021 Original source: https://malvuln.com/advisory/290477c9707f64a316888493ae67b1ef.txt Contact: malvuln13 () gmail com Media: twitter.com/malvuln Threat: Backdoor.Win32.Antilam.11 Vulnerability: Unauthenticated Remote Command Execution Description: The malware listens on TCP ports 29559, 47891. Third party attackers who can reach infected systems can execute commands made available by the backdoor....
- Backdoor.Win32.Curioso.zp / Insecure Permissions November 21, 2021Posted by malvuln on Nov 21Discovery / credits: Malvuln - malvuln.com (c) 2021 Original source: https://malvuln.com/advisory/1ae08493913b2a0c8cbcb0541da5a8bc.txt Contact: malvuln13 () gmail com Media: twitter.com/malvuln Threat: Backdoor.Win32.Curioso.zp Vulnerability: Insecure Permissions Description: The malware creates a dir with insecure permissions under c:\ drive granting change (C) permissions to the authenticated user group. Standard users can rename the...
- Backdoor.Win32.Acropolis.10 / Insecure Permissions November 21, 2021Posted by malvuln on Nov 21Discovery / credits: Malvuln - malvuln.com (c) 2021 Original source: https://malvuln.com/advisory/e865fc7225c84165d7aa0c7d8a1bcb77.txt Contact: malvuln13 () gmail com Media: twitter.com/malvuln Threat: Backdoor.Win32.Acropolis.10 Vulnerability: Insecure Permissions Description: The malware writes an .EXE with insecure permissions under c:\ drive granting change (C) permissions to the authenticated user group. Standard users can rename the...
- Open-Xchange Security Advisory 2021-11-19 November 21, 2021Posted by Open-Xchange GmbH via Fulldisclosure on Nov 21Dear subscribers, we're sharing our latest advisory with you and like to thank everyone who contributed in finding and solving those vulnerabilities. Feel free to join our bug bounty programs for OX AppSuite, Dovecot and PowerDNS at HackerOne. Yours sincerely, Martin Heiland, Open-Xchange GmbH Product: OX App […]
Tempo di lettura: 5 minUtilizzo del Machine Learning per proteggere i dati Introdotto nel gennaio 2017, Acronis Act… https://t.co/mhqalBxm8D
Gli attacchi informatici sono numerosi e non fanno distinzione tra aziende e singoli individui quando prendono di m… https://t.co/uOucUWZf7W
Estimated reading time: 5 minutes SNYPR è uno strumento di analisi della sicurezza in grado di trasformare i Big… https://t.co/oies7e0nYY
Estimated reading time: 5 minutes Con l’avvento delle piattaforme di big data, le aziende che si occupano di sicu… https://t.co/MSvA0dPgiE
Estimated reading time: 5 minutes With the advent of big data platforms, IT security companies can now make guid… https://t.co/aTv41eq2Ir