Stealer Malware Hidden in Fake Zoom Sites

Cyber Security, Data Security, malware, Ophtek, stealer malware, zoom, , , , , ,
11
Oct 2022

Six malicious websites have been discovered which claim to offer downloads of Zoom, but contain nothing but the Vidar stealer malware.

The popularity of Zoom – a video meeting application – has exploded in the post-Covid landscape we find ourselves living in. No longer do people need to travel for face-to-face meetings, they can now be conveniently arranged and carried out over video. Accordingly, the demand for Zoom is huge, with around 485 million downloads completed since 2020. Due to this popularity, a gang of cybercriminals have decided to use Zoom as the bait for downloading the Vidar stealer.

As your employees are likely to consider a Zoom install safe, it’s important that we delve a little deeper and demonstrate why it may be far from safe.

Beware of Fake Zoom Sites

Vidar has been an active threat for some time now, but this latest attack is a new campaign and carries a number of unique threats. The six sites, discovered by Cyble Research, use a variety of URLs such as ‘zoom-download’ and ‘zoomus’ to appear legitimate. And, if you visit one of these sites, the visual aesthetics are remarkably similar to the official Zoom website, but this is where all similarities end.

Attempting to download the Zoom application from these malicious sites will, instead, redirect you to a GitHub file depository. From here, two files will be downloaded to your temporary folder:

  • ZOOMIN~1.exe: this is a genuine Zoom installer which is included to create a front that nothing untoward is taking place.
  • Decoder.exe: this is the malicious file which injects Vidar’s ability to steal into the Microsoft Build Engine. With this infection in place, Vidar is then able to contact remote Command and Control servers and begin transmitting data from the infected PC.

Like most stealer malware, Vidar concentrates on extracting confidential data such as login credentials, network details and whether any further vulnerabilities are present in the IT infrastructure. If vulnerabilities are detected, then it’s highly likely these will be logged and sold by criminal gangs. Protecting yourself against Vidar, therefore, is crucial.

How to Avoid Having Your Data Stolen

The mechanics of the Vidar Zoom threat are relatively common in the world of malware, so it’s likely you will run into a similar threat at some point. The best way to protect your PCs is by following these practices:

  • Always Verify Websites: Vidar’s latest attack relies on poor judgement from its intended victims, the main error coming when they assume that the malicious website is genuine. Many antivirus suites contain tools which allow search results to be rated as to their level of safety, and there is also the option for these tools to present warning screens before accessing sites deemed unsafe. If these are unavailable, and you need to download some software, reach out to your IT team instead.
  • Install Updates: Vidar is keen on logging any vulnerabilities contained within your PC, so it makes sense to limit these vulnerabilities. The best way to achieve this is by always installing updates as soon as they are available.
  • Segment Your Network: to protect your data, it makes sense to adopt network segmentation. This procedure divides your network into different segments and allows you to keep them separate. Therefore, if one segment is breached, the others will remain protected, and this allows you to limit the spread of the malware.

For more ways to secure and optimize your business technology, contact your local IT professionals.

Read More

5 Sure-fire Ways to Know You’ve Been Hacked

Cyber Security, Encryption, Hackers, Hacking, Network, Ophtek, pop ups, , , , , ,
24
May 2022

The aim of most hackers is to be discreet, but there’s almost always a tell-tale sign they’re at work. You just have to know what you’re looking for.

Damage limitation is an essential part of cyber-security and, accordingly, the sooner you realize you’ve been hacked, the sooner you can get to work on rectifying the issue. Establishing that you’ve been hacked, however, isn’t always straightforward. Hackers are well known for their stealthy attack strategies, and, in many cases, you’re unlikely to realize that you’ve been hacked. You may, instead, simply think that your network is experiencing technical problems, and that’s why you can’t access your files, or why your PCs performance has ground to a halt. But you also need to consider that you may have been hacked.

How Do You Know You’ve Been Hacked?

There are several clear giveaways that your organization’s digital defenses have been breached, and here are five of the most sure-fire ways to know you’ve been hacked:

  1. Your Files are Encrypted: your day-to-day IT activity will likely center around the regular usage of files e.g. Word documents and Excel spreadsheets. But what happens when you can’t access these? Firstly, your organization’s productivity will plummet and, secondly, it could indicate that you’ve been the victim of ransomware. If your files are encrypted and a message is received demanding a ransom fee to decrypt them, then you’ve been hacked.
  2. Unusual Network Activity: regular traffic patterns should be easily identifiable on your network logs, but anything unusual should be closely scrutinized. Modern hacking methods often find malware communicating with remote locations to transmit information or download further malware. Therefore, any unknown locations that are delivering or receiving data from your organization need to be investigated.
  3. Persistent Pop-Ups: there’s nothing more irritating than a pop-up window when you’re trying to work on something. But when these are regularly popping up, when they shouldn’t be, there’s a good chance you’ve been hacked. Often, these pop-ups will try to convince you to perform an action, such as downloading an anti-malware app due to an infection on your PC. These, of course, are fake and are simply a devious strategy to get you to download further malware on to your PC.
  4. People Ask You If You’ve Been Hacked: one of the most obvious signs that you’ve been hacked is when people start asking you if you’ve been hacked. And this is because malware often hijacks email accounts to help spread spam. As a result, people you know – who are listed in your email address book – will be receiving spam messages direct from your email account. Naturally, these unusual messages will ring alarm bells with the recipients, and they are likely to check in with you to confirm if your email account has been hacked.
  5. Your Credentials are Available Online: hackers like to make money by harvesting valuable login credentials, these can then be sold to other hackers who want to breach security measures and gain quick, unauthorized access to private networks. Thankfully, applications such as Google’s Password Manager can warn you when these credentials turn up in password dumps, this is a good sign to immediately change all your passwords.

For more ways to secure and optimize your business technology, contact your local IT professionals.

Read More

Why Does Your Business Need a VPN?

Cyber Security, Online Security, Ophtek, PC Security, Security, VPN, , , , ,
10
May 2022

Security in business is paramount, and when it comes to IT networks it’s absolutely crucial. One of the best ways to protect your network is with a VPN.

With the number of cyberattacks in 2021 hitting new highs, protecting your IT network has never been more important. The sheer amount of secure data passing across a network in 2022 is remarkable. Accordingly, this data needs to be protected. Failure to do this will only lead to negative results: data leaks, compromised networks, and financial risk. While there are simple steps that your organization can implement, one of the strongest defense strategies is to put a virtual private network (VPN) in place.

What is a VPN?

VPNs have been around since the mid-1990s, but it wasn’t until the internet started to take off in the early-2000s that it became apparent they were necessary for businesses. Since then, they have grown in popularity with both organizations and domestic users. But what exactly is a VPN?

Well, imagine the private IT network you have at your organization. You will have full control over this network and be able to put the necessary security in place. However, what happens when one of your employees wants to connect to your network from a remote location? They won’t be able to connect directly to your network, they will need to use their own internet connection or a shared, public internet connection. As you will have no control over the security of this connection, there’s the potential for major problems.

Nonetheless, with a VPN in place, you can create a secure, encrypted connection between your remote employee and your network. Think of it as a tunnel between two points which is completely protected from any external forces. This allows data to be transferred from your network to a remote connection with peace of mind that it won’t be compromised.

The Business Benefits of a VPN

The benefits of connecting your private business network with external public networks is clear to see, but what are some of the other business benefits of a VPN? Let’s take a look:

  • Geo-locations: for a business with a global reach, the need for geo-independence with IT networks can be a necessity. Global locations, such as China, have much stronger internet access policies that you may be used to. And this can result in direct access to your organization’s network being blocked. However, a VPN will allow remote users in these locations to connect to your network as if they’re in the same state.

For more ways to secure and optimize your business technology, contact your local IT professionals.

Read More

Ophtek CEO Presenting at 3 Conferences in 2022 on Cyber Security

Cyber Security, Cyber Security Conference, Ophtek, Russian Hackers, , ,
19
Apr 2022

Ophtek’s expertise and authority within the world of cybersecurity will be demonstrated at three cyber security conferences in 2022.

Every modern organization should prioritize IT as one of the most crucial elements of their day-to-day operations. Without suitable IT infrastructures in place, an organization’s scope for communication, productivity and security will be severely limited. Accordingly, Ophtek strives to turn these business aspirations into a reality for their clients. Ophtek’s success in this field has been the result of investing in talented employees and the careful stewardship of CEO Arash Shokouh.

The experience and knowledge that Ophtek has amassed over the last decade is invaluable. It’s a commodity which is severely in demand as, now more than ever, businesses need help navigating their way through cyber security issues and understanding the best IT practices to maximize productivity. And that’s why Arash Shokouh has been asked to present at three conferences in 2022 on cyber security.

Statement by President Biden on our Nation’s Cybersecurity.

A recent announcement from President Biden on the importance of Cyber Security highlights these issues:

“This is a critical moment to accelerate our work to improve domestic cybersecurity and bolster our national resilience.  I have previously warned about the potential that Russia could conduct malicious cyber activity against the United States, including as a response to the unprecedented economic costs we’ve imposed on Russia alongside our allies and partners. It’s part of Russia’s playbook. Today, my Administration is reiterating those warnings based on evolving intelligence that the Russian Government is exploring options for potential cyberattacks.” Read his full statement here..

Cybersecurity and Infrasctucture Security Agency.

Russia’s invasion of Ukraine could impact organizations both within and beyond the region, to include malicious cyber activity against the U.S. homeland, including as a response to the unprecedented economic costs imposed on Russia by the U.S. and our allies and partners. Evolving intelligence indicates that the Russian Government is exploring options for potential cyberattacks.  For more information..

Where Will Arash Be Presenting?

Arash is due to speak at the following three conferences in 2022:

Given Arash’s diverse background as an inventor, holder of BS and MS degrees in computer engineering, status as a part-time professor in computer engineering and, of course, ownership of Ophtek, he is perfectly placed to share his wealth of cyber security knowledge.

Given the current landscape of cyber security, where ransomware and malware represent major, significant threats, Arash’s presentations will focus on addressing these issues and pointing towards a safer, more secure future for organizations. In particular, the content will be focused on:

  • Protecting your business from modern cyber threats and technology
  • Cyber security best practices for individuals and businesses
  • The future of IT best practices
  • Addressing cyber security compliance

The cumulative insights provided by these presentations promise to impart a strong understanding of cyber security to forward thinking businesses and Arash cannot wait to share his knowledge.

Read More

Social Engineering Used to Hack into Camera Firm

Cyber Security, Employee Training, malware, Ophtek, Password Security, social engineering, , , , ,
22
Mar 2022

Social engineering is one of the modern menaces of online life, and this has been demonstrated by a recent malware attack on a Swedish camera firm.

Axis Communications, who manufacture network and security cameras, are the company at the centre of this recent attack. The organization announced that they had been the victims of what they described as an “IT-related intrusion” and advised that, as a result, they had temporarily closed their public-facing services online. Naturally, the attack caused great disruption to Axis; it also brought to light a number of shortfalls in cyber-security, namely the impact of social engineering.

What is Social Engineering?

Social engineering is a form of hacking which involves using various methods of deception to glean information from the victims. So, for example, an employee who receives an email, from what appears to the organization’s IT department but is from a fake email address, asking for confirmation of their login credentials is a form of social engineering. And these incidents of social engineering don’t have to take place online, simply telling someone your mother’s maiden name – a popular choice for password recovery questions – is another example.

This image has an empty alt attribute; its file name is bus-cyber-attack2-lrg-960x480.jpg

How The Axis Attack Happened

The exact details of the Axis attack are yet to be released as the company are conducting a forensic investigation intoexactly what happened. Nonetheless, they have revealed the following details:

  • Several methods of social engineering were used in order to gain access to the Axis network, these were successful despite the presence of security procedures such as multi-factor authentication.
  • Advanced hacking techniques were used by the hackers – once they had breached the network – to enhance their credentials and gain high-level access to restricted areas.
  • Internal directory services were compromised by this unauthorized access.
  • While no ransomware was detected, there was evidence that malware had been downloaded to the Axis network.

Following concerns of suspicious network activity, and the employment of IT security experts, all external connectivity to the Axis network was closed down.

How to Protect Yourself from Social Engineering

It can be difficult to tackle the highly polished social engineering methods employed by hackers, but following the practices below can make a real difference:

  • Always Think: slowing down and assessing the situation is crucial when it comes to social engineering. If someone has asked you for sensitive information, such as password details, ask yourself why the need this and what could they do with it? Internal sources – such as managers and IT departments – will never ask for this, so guard your password carefully and, to clarify the situation, speak face-to face with the person who has apparently asked for it.

For more ways to secure and optimize your business technology, contact your local IT professionals.

Read More
1 2 3 4 … 8