WordPad, a basic yet popular word processor, is the latest Windows app to fall victim to a vulnerability exploited by threat actors. 
 
Bundled free with almost every version of Windows since Windows 95, WordPad has remained popular thanks to its simplicity. Less complex than Microsoft Word and more advanced than the basic Notepad app, WordPad gives users an effective word processing tool. However, it’s now an app which carries a real threat to your IT security. Due to a flaw in WordPad’s design, threat actors have started to abuse this vulnerability by launching a DLL hijacking attack. 

Everything You Need to Know about the WordPad Hack 

You may not be familiar with DLL hijacking, so we’ll start by looking at this form of attack. DLL files are library files which can be used by multiple programs all at the same time. This makes it a highly flexible and efficient file, one which can reduce disk space and maximize memory usage. When Windows launches an app, it searches through default folders for DLLs and, if they are required, automatically loads them. What’s important to note, however, is that Windows will always give priority to loading DLLs located in the same folder as the app being launched. 

DLL hijacking abuses this process by inserting malicious DLLs in the app’s parent folder. Therefore, Windows will automatically load this malicious file instead of the genuine one. This allows threat actors to guarantee their malware can be launched long after they have left the system. And this is exactly what has happened with WordPad. The hackers begin their attack by using a phishing email to trick users into downloading a file, one which contains the WordPad executable and a malicious DLL with the name of edputil.dll. Launching the WordPad file will automatically trigger the loading of the malicious DLL file. 

This infected version of edputil.dll runs in the background and uses QBot, a notorious piece of malware, to not only steal data, but also download further malware. The infected PC is then used to spread the attack throughout its entire network.  

Writing QBot into History  

While this form of attack is far from new, it has proved successful. Accordingly, it’s important that we hammer home the basics of good cybersecurity, with a particular emphasis on phishing attacks: 

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Malware constantly evolves, and that’s why it’s a constant thorn in the side of PC users. The ever-changing RapperBot malware is a perfect example of this. 

If malware was boring and lacked innovation, it wouldn’t last very long or infect many computers. It would make our lives a lot easier, but it would defeat the main objective of malware. And that is to cause chaos. Repeatedly. Therefore, malware developers are keen to extend the lifespan of their creations. This is why malware is regularly developed, to keep one step ahead. It’s the digital example of a game of cat and mouse. But the good news is that you don’t have to be the mouse. 

The Lowdown on RapperBot and Its Evolution 

First discovered in 2022, RapperBot started its malware career in the Internet of Things (IoT) niche. Most notably, RapperBot was observed to be using parts of the Mirai botnet code. However, RapperBot was much more than just another take on Mirai. It was much more sophisticated. Not only had its remote access capabilities been upgraded, but it could now also brute force SSH servers – these allow two PCs to communicate with each other. 

This evolution has continued at pace, with security experts Fortinet and Kaspersky detecting the following changes: 

  • After infection, further code was added into RapperBot by the developers to avoid detection. A situation which persisted even after rebooting. A remote binary downloader was later added to allow self-propagation of the malware. 
  • The self-propagation capabilities of RapperBot were later changed to allow the malware to gain constant remote access to SSH servers which had been brute forced. 
  • Finally, RapperBot moved its aim away from SSH servers and targeted telnet servers. Cleverly, RapperBot sidestepped the traditional technique of using huge data lists and, instead, monitored telnet prompts to determine the target device. This allowed the threat actors to identify IoT devices and quickly try their default credentials. 

The Best Tips for Tackling RapperBot 

IoT devices are plentiful in the modern age, and we certainly couldn’t be without them. Accordingly, we need to protect them from threats such as RapperBot and BotenaGo. You can do this by following these best tips: 

  1. Keep devices up to date: it’s crucial that you regularly update the firmware and software which supports your IoT devices. Few, if any, pieces of hardware reach consumers without some form of security flaw present. Once these flaws are detected, the manufacturer will usually release a patch or update to remove this vulnerability. Therefore, you need to install these as soon as possible, a strategy which is made easy by allowing automatic updates. 
  1. Change default passwords: Many IoT devices come with default usernames and passwords, these are often the same across every single version of that device. As such, they represent an incredible risk. This means you need to change these default credentials to strong, unique usernames and passwords before they are connected to your IT infrastructure. Additionally, enable two-factor authentication, wherever possible, to add an extra layer of security. 
  1. Network segmentation: ideally, separate networks should be created to house your IoT devices and isolate them from your core network. As IoT devices carry a certain amount of risk, it makes sense to keep them away from the majority of your IT infrastructure. This ensures that, if an IoT device does become infected, the malware can only spread so far. 

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There’s a lot of money to be made in hacking and threat actors are now turning it into a business with Ransomware as a Service (RaaS).

Ransomware, of course, is well known to anyone who steps online in the digital age. With the ability to encrypt your data and demand a ransom fee, it has not only generated headlines, but also caused significant headaches for business owners. And, with ransomware attacks increasing by 41% in 2022, it’s a strategy which is showing no signs of slowing up. Therefore, not only do you need to be aware of ransomware, but you also need to keep up with associated developments such as RaaS.

As RaaS has the potential to create attacks which are both wider ranging and easier than before, it’s crucial you understand how it operates

The Basics of Ransomware as a Service

We’re all aware of what ransomware is, but what is RaaS? After all, surely ransomware is the opposite of a service? Unfortunately, for PC owners, ransomware software and attacks are now available for hire in the form of RaaS. Similar to Software as a Service (Saas) – examples of which include Gmail and Netflix – RaaS allows threat actors to harness the power of hacking tools without having to design them. If, for example, a threat actor doesn’t have the time (or skills) to build a ransomware tool, what do they do? They purchase one.

Typically, RaaS kits are found on the dark web, so don’t expect to find them taking up space on Amazon. Depending on the sophistication of the RaaS, the cost of purchasing them can range between $30 – $5,000. Threat actors looking to purchase RaaS are also presented with several different purchasing options such as one-time fees, subscription tiers or even affiliate models. It’s estimated that over $10 billion exchanges hands each year – mostly in cryptocurrency – for RaaS kits.

Examples of RaaS include Black Basta, LockBit and DarkSide, with more available for those looking to unleash ransomware easily and quickly. These RaaS kits are also much more than just hacking software, they also offer user forums and dedicated support teams to help customers get the most out of their ransomware. Again, this is very similar to the way in which successful SaaS developers provide extra value for their product. However, whereas SaaS is provided by legitimate developers, RaaS tends to be created by criminal gangs with the sole intent of generating illegal funds.

Staying Safe from Ransomware as a Service

The end result of an RaaS attack is the same as a standard ransomware attack, so there’s nothing specific you need to do if an attack comes through RaaS. Instead, you just need to stick to good old fashioned ransomware security practices:

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It’s impossible for a PC to be 100% secure, but there’s nothing to stop you strengthening the defenses of your PC.

With cyberattacks on small businesses at an all-time high, there’s never been a more important time to strengthen your PC’s security. However, as ever, budgets are a crucial factor in achieving this. Thankfully, investing thousands upon thousands of dollars isn’t your only option (although it certainly helps) as simpler solutions are available. Many of these are processes which are either overlooked or simply unknown to most PC users. But the enhanced security they offer is unarguable. Therefore, it’s time integrate these 7 quick tips to improve the security of your PC:

  1. Automatic updates: software vulnerabilities are a sure-fire way to open your IT infrastructure to the world, so it’s vital you install updates as soon as possible. Installing updates, though, is far from glamorous and this is why many PC users fail to install them when available. Luckily, it’s possible to implement automatic updates in Windows to take the pain out of this process.
  • Never write down your passwords: it may be one of the biggest sins when it comes to PC security, but PC passwords are routinely written down in every single business in the world. And it’s a practice which needs to stop. The only place passwords should ever be stored is in either your memory or a password manager.
  • Shut your PC down: when you’ve finished on your PC for the day, you should always shut it down. It may be tempting to leave it running, so that you can start straight away again the next day, but all this does is label your PC as a sitting duck for hackers.

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A new malware threat has been discovered which uses the public excitement around the Webb telescope to deliver a phishing scam.

The first image to be released by the Webb telescope project was entitled SMACS 0723, and its new, stunning view of the galaxy created headlines around the world. However, it’s this level of interest which has led to hackers using it as bait. The image is used as part of an email phishing scam and, unfortunately, fails to highlight the wonders of space. Instead, it compromises a PC and leaves it at risk of further attacks.

Phishing scams are a contemporary irritant in the IT security world, so we’re going to delve deeper into this one and see what we can do to help protect your PC.

The Threat from Outer Space

This latest strain of malware has been given the rather complex name of GO#WEBBFUSCATOR but the way in which it operates is simple. Security experts Securonix have discovered a phishing email – described as one promoting satellite service plans – which contains an infected Microsoft Office document. If this document is downloaded and opened, the malware will – if Word macros are enabled – begin to release its payload.

The malware begins by downloading the SMACS 0723 image, but this image is far from innocent as it contains hidden Base64 code. With this code activated, the infected PC is then systematically tested for vulnerabilities and weaknesses. Once these have been detected and analyzed, the hackers begin a campaign of exploitation to take control of the PC. It’s also interesting to note that the computer language behind this malicious code is constructed from Go, a cross-platform language which highlights the scope of the threat actors behind GO#WEBBFUSCATOR.

Staying Safe on Planet Earth

The number of vulnerabilities this malware targets, along with its deceptive approach, make it a powerful weapon for hackers. Therefore, protecting yourself against its dangers is paramount and you must make sure you:

  • Monitor network activity: once malware such as GO#WEBBFUSCATOR has made its way onto your PC, it’s likely that you will notice a surge in unusual activity on your network e.g. increased traffic and downloads. And this is likely to be one of the only signs you receive, so it pays to keep a close eye on any spikes in network activity.

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