GandCrab Ransomware Continues to Cause Huge Problems

Cyber Attack, Cyber Security, GrandCrab, Hacking, RaaS, Ransomware, Ransomware-as-a-Service, Security, Security Threats, , ,
13
Nov 2018

Defeating a particular strand of ransomware doesn’t mean it’s dead and buried; you only have to take a look at GandCrab to see how it can evolve.

GandCrab first emerged online at the start of 2018 and began to spread rapidly across the globe. Known as a Ransomware-as-a-Service (RaaS) attack, GandCrab has been able to continue causing chaos thanks to its code receiving regular updates. Now, as ransomware is such a pressing concern at the best of times, the realization that it can rapidly evolve is very troubling for anyone who heads online.

Due to the economic impact, not to mention the effect on productivity, that ransomware can cause to organizations, we’re going to take a close look at GandCrab to understand how and why it has evolved.

What is RaaS?

GandCrab is classed as a RaaS, but what exactly does this mean? Well, RaaS is built upon an attack where ransomware is written by cyber-criminals and then sold on to attackers who may not have the technical knowledge to write their own ransomware. Sometimes, however, the attackers may be perfectly capable of writing their own ransomware, but they don’t have the time and are just looking for a quick buck instead. Nonetheless, RaaS is highly popular due to the ease with which it can be deployed and the ready availability of the code. And this is exactly how GandCrab has been operating since the start of the year.

How Does GandCrab Operate?

Rather than concentrating on just one deployment method, GandCrab is particularly virulent thanks to its multifaceted approach which includes spam emails, exploit kits and malvertising. Once executed, GandCrab begins compiling information on the victim’s PC and scans for file extensions that it’s capable of encrypting. Early versions of GandCrab would encrypt files with a .CRAB extension, but the latest versions have begun encrypting files with 5 digit extensions that are randomly generated. GandCrab is also different to most other ransomware as it demands its ransom in Dash, a cryptocurrency which launched in 2015, rather than Bitcoin.

The Evolution of GandCrab

In total, there have been five versions of GandCrab released since its initial detection. Being a RaaS, the writers of GandCrab are keen to keep the money flowing in and this has fuelled their determination to update their product. Those who were infected by versions 1.0 and 1.1 were in luck early on as BitDefender managed to code a decryptor to retrieve files which had been compromised. However, this setback only served to inspire the hackers behind GandCrab to update the code significantly in GandCrab 2.0. Since then, less significant, but regular updates have allowed GandCrab to stay ahead of the security experts and keep their product bringing in its illicit income.

Can GandCrab be Defeated?

Despite the strength of GandCrab’s defenses, it appears that the security experts may be getting closer. Recent developments have seen BitDefender refining their decryptor software to unlock files encrypted by GandCrab versions 1, 4 and 5. Unfortunately, progress on decrypting files encrypted by versions 2 and 3 has been much slower and these files remain encrypted unless the victims are willing to pay the ransom. Ultimately, the best way for your organization to protect its data from the threat of ransomware such as GandCrab is by practicing best security practices and not having to decrypt any files whatsoever.

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

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Why are Cloud Networks at Risk of Being Hacked in 2018?

Cloud, Cloud Backup, Cyber Attack, Hacking, IT Mistakes, Phishing, Secure Database, Security, , ,
06
Nov 2018

 

Cloud networks are the most important newcomers to storage and networking in a long, long time, but why are cloud networks at risk of being hacked in 2018?

With cloud network revenue set to hit $228 billion in 2019, it’s clear to see that cloud networks have become phenomenally successful and their popularity doesn’t appear to show any signs of slowing down. However, hackers are exceptionally interested in this new slice of digital real estate and, accordingly, are beginning to tailor attacks towards cloud providers. Naturally, new technology is prone to teething issues, but when there’s so much data at risk, it’s understandable that organizations may be a little concerned by the risk of cloud networks being hacked.

Let’s take a look at exactly why there’s a risk of your cloud network being hacked and having all its data compromised.

Hackers Like to Target Big and Sensitive Data

Cloud networks have been readily adopted by many organizations due to the vast benefits they offer, so it should come as no surprise that hackers have followed consumers to the cloud. Organizations are frequently storing entire databases packed full of confidential data which, to a hacker’s eyes, is the ultimate prize. Rather than embarking on time consuming hacking strategies which yield only one employee’s details, hackers are going to go straight to the cloud to obtain as much data as possible.

 

The Cloud Brings New Technology

While organizations are more than aware of firewalls and passwords, cloud networks bring a whole new range of technology that has shifted the goalposts of cyber-security. For example, the cloud is a virtual network rather than a physical network and, accordingly, can’t be treated in the same way as previous technology that organizations have used. New security tools are required to marshal data warehouses in the cloud and, at present, the level of knowledge is, even in many IT professionals, at a naive level.

Human Error is Always an Issue

Employees of any organization that accesses a cloud network are perhaps the biggest threat to cloud security. All it takes is one mistake for a hacker to gain access to your network and, if they access your cloud, this could have catastrophic effects for your organization’s data. As ever, the risk of falling for phishing scams puts the security of your cloud network at risk, but, as covered earlier, the new technology also brings a number of problems to the table such as configuration errors. Amazon, for example, exposed nearly 48 million data profiles earlier this year due to not configuring their cloud correctly.

The Danger of State Sponsored Attacks

Huge organizations that are integral to the running of the country have invested heavily in cloud networks to help store the vast amounts of data that they generate. The result of this is that hackers are continually searching for new and innovative ways to breach cloud security. While their main target may be major corporations, the knowledge that these hackers are gaining means that the ease with which cloud networks can be hacked is increasing. As this knowledge builds and builds, attacks on cloud networks will become easier to execute and more commonplace.

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

 

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30 Million Users Do Not Like Facebook Being Hacked

Cyber Attack, Hacking, security, Security, Security Threats, , , ,
30
Oct 2018

Facebook has started to reveal more details regarding the hack they experienced in September 2018 which has put 30 million users’ data at risk.

One of the most popular websites on the planet, Facebook has managed to amass a mammoth user base which totals around 2.23 billion. As a result, Facebook is an organization which retains a near unparalleled amount of data on its servers. To say that it’s a target for hackers would be an understatement, it’s more like the holy grail for any hacker who’s ever picked up a keyboard. And now it’s been hacked.

Facebook may be a massive organization making billions of dollars in revenue every year, but this doesn’t mean they’re immune from security lapses. It’s a fact which highlights the importance of good cyber security for any organization operating in the digital sphere. Let’s take a look at what happened.

How Facebook Got Hacked

The techniques behind the Facebook hack are complex, but for a talented hacker the methods employed are relatively simple. Targeting in on three bugs in the Facebook code for the ‘View As’ section – which allows users to view their own profile as if they’re a different user – the hackers were able to obtain important ‘access tokens’. These access tokens are the pieces of code which ensure that users remain logged into Facebook without prompting for login information every time they try to access Facebook.

The hackers were able to build an initial pool of 400,000 accounts that they controlled with these access tokens. From here, the hackers began to harvest data from all these accounts and, when complete, used an automated process to hack into the accounts of friends listed on the initially compromised account. Moving from account to account in such a way ensured that the number of hacked accounts grew exponentially with the final figure totaling around 30 million hacked accounts. Sensitive and personal data, of course, is what hackers thrive on and within these 30 million accounts they found plenty.

15 million Facebook users found that the hackers were able to access their name and contact information, while another 14 million users had details compromised such as gender, current address, birth date and the last 10 places they checked in at. The remaining one million hacked accounts ‘merely’ had their access tokens compromised with no personal data being on offer to the hackers. Unfortunately, for Facebook users, it took nearly two weeks to bring the hack to a close. Unusual activity was first recorded on 14th September, but it wasn’t until 11 days later that Facebook was able to confirm an attack was taking place. Two days later the attack was shut down and new access tokens issued.

If Facebook Can Get Hacked

Facebook use their own code so, naturally, the exact hack that blighted their systems is unlikely to affect your organization. However, the vulnerability of software is a universal concern for any organization that faces the public digitally. As ever, the basics of good cyber security should be adhered to at all times such as:

  • Installing all updates at the point of issue
  • Regularly updating passwords to protect user accounts
  • Training your staff on the methods used to execute an attack

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

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Scottish Brewery Hit by the Dharma Ransomware

Dharma, email security, Phishing, Phishing Email, Ransomware, Security, , , ,
23
Oct 2018

Ransomware continues to cause chaos for organizations with the latest story to hit the news concerning a Scottish brewery infected by the Dharma ransomware.

While it has been reported that ransomware attacks have fallen by 30% in the last 12 months, the fact remains that they’re still capable of causing significant disruption. In the case of the Arran Brewery on the Isle of Arran, Scotland, the organization had to accept that they would lose around three months’ worth of sales data due to the effects of the attack. This, of course, is the last thing that any business wants and acts as a fine reminder that we need to be on guard against ransomware.

To help provide a little background and demonstrate how the attack unfolded, we’re going to take a closer look at what happened.

Attacking the Brewery

What’s most interesting about the attack on the Arran Brewery is that it would appear the attackers deliberately targeted the brewery. Instead of a scattershot approach which targeted multiple organizations, the hackers focus was clearly on the Arran Brewery. Just before the attack, multiple adverts for a job at the Arran Brewery (which had already been filled) appeared on recruitment sites all over the globe. Naturally, the brewery received a sharp increase in the number of CVs being emailed in but, unfortunately, one of the emails contained a malicious payload.

The payload was contained with a PDF attachment which, when opened, initiated the attack and infected the entire network. Following the encryption of the Arran Brewery’s files, a ransom demand was issued which advised that the encryption keys would only be released in exchange for 2 bitcoin (roughly $14,000). Thankfully, an IT consultant was able to retrieve a significant amount of the encrypted data from backups and rid the system of the infection. However, certain files couldn’t be restored and, due to it not being economically viable to pay the ransom, the Arran Brewery decided to write off three months’ worth of sales data.

What is Dharma?

Dharma is a strain of ransomware which was first released in 2016 and has regularly been updated ever since due to the emergence of Dharma decryptors. In September 2018, for example, three new variants emerged which are resistant to previous decryptors. When files are encrypted by Dharma they will automatically append a new file extension onto the existing file and these extensions can include:

  • .dharma
  • .cesar
  • .onion
  • .wallet
  • .zzzzz

Final Thoughts

If anything acts as a reminder that organizations need to be vigilant against ransomware then it’s a current and contemporary threat. Dharma could easily hit your organization next, so you need to ask yourself whether you can afford to lose three months’ worth of data. I’ll let you into a little secret: no one wants to lose three months’ worth of data. Therefore, it’s crucial that you reiterate the importance of email security to your employees in order to maintain access to all your data at all times.

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

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How Do You Reduce the Risk of Phishing Attacks?

email links, Password Security, Phishing, Phishing Email, Security, Security Threats, , ,
16
Oct 2018

Thanks to the power of social engineering, phishing remains a powerful method of hacking organizations. Reducing this risk, therefore, is crucial.

Phishing has been active since the early days of the internet and, unfortunately, it doesn’t appear to be going anywhere soon. Thankfully, you don’t have to fall victim to these deceptive attacks as there is plenty that any organization can do to protect its data. And, don’t worry, it doesn’t involve investing millions in state of the art technology. All it takes is a little bit of common sense and an understanding of how phishing attacks work.

To get you started we’re going to show you how to reduce the risk of phishing attacks.

Antivirus Software is Key

One of the best ways to reduce phishing emails is by working with antivirus software. Capable of scanning attachments and analyzing links contained within emails, a good antivirus software can easily target the two main ways that phishing attacks unleash their payload. However, as with all software, it’s important that you update it regularly and install updates immediately. Phishing attacks can spread round the world very quickly, so you need to stay one step ahead of them.

Keep Up to Date with Phishing Attacks

Hackers are constantly developing their techniques and tweaking their methods, so it’s vital that you keep an eye on what’s happening in the world of phishing. New attack methods can be launched very quickly and be in your inbox within a day, so make sure that you’re regularly monitoring IT news sources to prepare yourself for any incoming threats.

Educate Your Employees

The main targets of any phishing attack against your organization will be your employees, so they have to be educated in order to prevent any data breaches. The basics of phishing are relatively simple, so the training doesn’t need to be too in-depth. All you have to do is ensure that these basics are hammered home so that employees know how to spot a phishing email and how to deal with it.

Practice Phishing Attacks

A popular method for reducing the risk of phishing attacks is by running regular exercises to test your employees. For example, fake phishing emails can be randomly emailed to your employees that test whether they are susceptible to phishing scams or not. Usually, these emails will contain a fake link that urges them to complete something on behalf of the company – such as IT training – but the actual URL contained will be a ‘malicious’ one. Those employees that fail to spot the ‘malicious’ link can then be asked to take a refresher training course.

Combine All Your Preventative Methods

The key to reducing the risk of phishing attacks is by combining all of the above into one multi-faceted security approach. An amazing antivirus software solution, for example, isn’t effective enough on its own. Instead, you need a firm knowledge of the phishing landscape, amazing employee training and regular tests to guarantee that you can tackle phishing on all fronts.

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

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