Threat Lab

Webroot DNS Protection: Now Leveraging the Google Cloud Platform

We are  excited to announce Webroot® DNS Protection now runs on Google Cloud Platform (GCP). Leveraging GCP in this way will provide Webroot customers with security, performance, and reliability.  Security Preventing denial of service (DoS) attacks is a core benefit...

What Defines a Machine Learning-Based Threat Intelligence Platform?

As technology continues to evolve, several trends are staying consistent. First, the volume of data is growing exponentially. Second, human analysts can’t hope to keep up—there just aren’t enough of them and they can’t work fast enough. Third, adversarial attacks that...

Global Privacy Concerns: The World’s Top Five Cities Using Invasive Technology

Cities are expanding their technological reach. Many of their efforts work to increase public protections, such as using GPS tracking to help first responders quickly locate the site of a car accident. But, in the rush for a more secure and technologically advanced...

A Chat with Kelvin Murray: Senior Threat Research Analyst

In a constantly evolving cyber landscape, it’s no simple task to keep up with every new threat that could potentially harm customers. Webroot Senior Threat Research Analyst Kelvin Murray highlighted the volume of threats he and his peers are faced with in our latest...

A Cybersecurity Guide for Digital Nomads

Technology has unlocked a new type of worker, unlike any we have seen before—the digital nomad. Digital nomads are people who use technologies like WiFi, smart devices, and cloud-based applications to work from wherever they please. For some digital nomads, this means...

Cloud Services in the Crosshairs of Cybercrime

It's a familiar story in tech: new technologies and shifting preferences raise new security challenges. One of the most pressing challenges today involves monitoring and securing all of the applications and data currently undergoing a mass migration to public and...

Webroot’s Acceleration with Advancement of IoT

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As a concept, the IoT (Internet of Things) has been with us since the late 1990’s, and has evolved from simple M2M (Machine-to-Machine) connectivity into a vision for Operational Productivity enabled by Interoperability.  Innovation and investment in new IoT technology and business models are driven by the pursuit of key operational benefits such as:

  • Provisioning Assets as Services
  • Efficiency through Automation
  • Resource Utilization
  • Environmental Impact
  • Safer and more productive Critical infrastructure

Next-generation IoT devices and platforms are now being deployed in critical infrastructures such as Integrated Transportation (auto, railway, airports,…), oil & gas operations, industrial & manufacturing facilities, energy distribution, and ‘SmartCity’ systems.  Operations are becoming dependent on these efficient and high-availability IP-aware systems.

New systems are being deployed and older non-IP based systems are being modernized with IP-aware functions at a rapid rate. Supporting this movement has driven device manufacturers to deploy new classes of devices and systems that can take advantage of direct and indirect internet connectivity in order to leverage public and private IoT Cloud Services Platforms.  Theses next-generation smart systems can perform many advanced functions such as data aggregation and storage, advanced analytics, prediction, prognostication, and even limited decision-making.   What was considered advanced data processing and decision- making in a data center just two years ago is now being deployed regularly in stand-alone IP-connected devices at the internet edge.   This along with rapid developments in semiconductor and control technology is paving the way for a new wave of robotics and autonomous systems where cloud processes like machine learning are being brought down to the edge (FOG computing).

In order to deliver the vision of IoT business models, the lines between traditional enterprise IT systems (IT) and the high-availability autonomous operational infrastructures are undergoing radical evolution with new standards and vendors.  As with many new waves of technology advancement, there are those who seek to leverage weaknesses for criminal exploit, state-sponsored espionage, or simply mischief on a grand scale.  These new systems are very enticing to those who specialize in advanced exploits.  Increasingly, malicious actors who have targeted personal computing with malware, viruses and phishing exploits, are now targeting critical infrastructure elements for profit and other motives.  Modern cyber attacks on critical infrastructure take advantage of compromised IP addresses (servers, websites, etc.) to carry out DDoS, botnet and other forms of remote command and control exploits.

Webroot deployed the cyber-security industry’s first, most advanced, and most effective real-time cloud-based Threat Intelligence.  We have been providing this service exclusively to leading Security Appliance, NGFW, and Access Point OEMs for over 5 years.  These OEMs are leaders in bringing the latest cyber security approaches to corporate and public IT enterprises.  This same technology, which has armed advanced networking equipment providers with a real-time defense against Internet launched attacks, is now made available to non-telecom equipment developers for cyber protection to support the growing new classes of IoT systems, such as connected automobiles, industrial automation, process control, aviation, railway, power management, and home energy management.

As system designers look to protect new and existing IoT devices and networks, they are increasingly applying techniques formerly used by the most advanced firewall and network security appliance manufacturers.   IoT gateways are emerging as this new class of OEM appliance. They are being designed to locally integrate single and multi-vendor platforms.  Common functions are real-time data stream analytics, protocol translations, networking control, endpoint control, storage, and manageability.  However, until recently, IoT gateways were being built without sufficient security or intelligence to properly protect critical infrastructure.  What is new and very exciting now is that non-security appliance vendors are now able to bring advanced cyber-security into IoT Gateways and offer Cyber-Security-as-a-Service to critical infrastructure. IoT Gateways can now utilize cloud-based cyber-security to securely connect legacy and next-generation devices to the Internet of Things.

I am pleased and excited to be part of the efforts by Webroot and our partners to ensure that the latest techniques are leveraged across these new IoT devices, appliances, systems and platforms.  We look forward to our continued dialogue with you in advancing collective threat intelligence.

As tax season approaches, beware of tax related scams

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Tax season officially began on January 19th, and with tax season comes the inevitable rise in tax-related scams. Identity thieves tend to step up their game a bit during tax season, looking to get the ultimate prize – your Social Security Number. Scammers often use the threat of jail time for unpaid tax debt to trick you into giving out sensitive personal information. As with so many scams, seniors are a major target. Telephone scams are particularly popular, but as more people file their taxes electronically, phishing emails and malicious email attachments have become more prevalent.

Now is a good time to help educate your family members about these types of scams. It is important to pay extra attention to any email that is tax related. Be aware that the IRS will not contact you via email to request any personal or financial information. Don’t click on any links or download any attachments from emails claiming to be from the IRS. If you need tax related information, go directly to the official IRS website at www.irs.gov instead of using a search engine.

For more information on taxes and security, the IRS have provided resources at: https://www.irs.gov/Individuals/Taxes-Security-Together

A look at a typical macro infection

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For over a decade, one of the most common ways to infect a computer with malware has been the implementation of “macros” in Word and Excel documents. Macros are small scripts that automate a series of commands in a document; most commonly they are used to automate legitimate repetitive tasks in applications like MS Excel and MS Word. Because of the security issues inherent to macros, Microsoft added security features in Office 2003 and all subsequent Office releases in order to curb macro abuses. In particular, the use of macros is disabled by default in Microsoft Office applications, requiring the user to manually turn macros on in order to use them.

Because of this, it is less likely to be infected by a document containing a malicious macro, but it is still possible. Typically, a document containing a malicious macro these days will be accompanied by instructions that ask the user to enable macros in their Office applications. Fortunately, these types of attacks are easy to detect if you know what to look for.

The first thing to be aware of is that unless you already use macros regularly in your work, you will probably never be sent a legitimate document that contains a macro script. In the case that you do use macros regularly, they will usually be similar types of documents that come from the same sources. If you receive a document via e-mail from an unknown sender, and the document contains macros, it is probably malware and should be deleted immediately.

The most popular type of malware infection these days comes in the form of a bogus shipping e-mail, such as a UPS Shipping Notice or a USPS “failed delivery” e-mail, as shown below:

Webroot_macroinfection

In this example, we can see a few different things that would alert you to the fact that it is bogus. First, observe the “From” e-mail address. The e-mail claims to be from the USPS but the sender is from “no-reply@Postal-Reporter.com” instead of a “USPS.com” e-mail address. Secondly, because the e-mail address is an unknown or previously uncontacted sender, the fact that the message has a document attached is highly suspicious. We would recommend immediately deleting an e-mail like this and would especially advise not downloading or opening the attached document.

If this type of document is downloaded, it may not be immediately detected by security software because the document itself does not contain malware. It is only when macros are run that the malicious script is activated; usually this would trigger a download and launch of malicious software.

When this document is opened, what you will usually see in MS Word is something like this:

Webroot_macroinfection_1

The document contains no real information but is meant to trick you into believing that you will not be able to read a message without enabling macros in MS Word. You can see that MS Word displays a yellow bar with “SECURITY WARNING: Macros have been disabled.”, also giving you the option to “Enable Content”. This is your clear warning that something is not right with this document. If you have opened a suspicious document and have gotten this far, you should immediately close and delete the document before going any further with it.

Webroot_macroinfection_2

Knowing how to spot these types of attacks is the best way to avoid them, but there is one more thing you can do to ensure that a malicious macro document does not infect your computer. By default, the “Trust Center” setting for macros is “Disable all macros with notification”. This means that if macros are detected in a document, you will see that yellow “SECURITY WARNING” bar. We would recommend changing this setting to “Disable all macros without notification”, which will simply block the ability to use macros without prompting you to enable them:

Webroot_macroinfection_3

This is especially useful if you share your computer with others who are not already trained in spotting these types of malicious documents. We hope that this helps you to pre-emptively detect and avoid these types of infections in the future.

Ransom32 – A RaaS that could be used on multiple OS

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Update: We now have a soundbite of the music played after infection: 

The RaaS (Ransomware as a Service) business model is still seeing growth. Here is the latest cyber criminals have to offer and it could later on be used for Mac and Linux OS

As with all other RaaS platforms you sign up to create new samples from hidden servers in the Tor Network. Just input the bitcoin wallet address you want your “revenue” to be deposited in.

Once you input a deposit bitcoin address, you’ll be presented with a very easy to use portal with customization and stats. The customization allows you to fully lock the computer – which will make the lockscreen pop-up every few seconds and not be able to be minimized. What is interesting is that it even mentions to use caution with this feature as victims will find it difficult to check that their files have even been encrypted and will have to use another machine to pay the bitcoin ransom. The stats will show you how many people you are infecting and how many people are paying the ransom.

Once you click download it will generate the malware with your customized setting and payment amount. The size of the file is 22MB which is quite large for malware in general. This is because main malware component inside the payload, “chrome.exe” is a packaged NW.js application which contains the malware code. NW.js s a framework that lets you call Node.js modules directly from the DOM and enables a way of writing applications with multiple web technologies that work on ALL operating systems. While we did see strings in the code reference commands only used on Unix operating systems, current samples only work on windows… for now. We suspect that Mac/Linux compatibility is in the works.

This is the infection lockscreen that pops up once you are infected and files are encrypted. You are also blasted with music from the video game Metal Gear Solid – which is bizarre and very obnoxious. We see that they’ve made sure to use the free decrypt tactic that was first introduced in 2014 with CoinVault – we did confirm that this feature works.

As always, these come with detailed instructions on how to purchase bitcoins with USD and then send it over to the ransom wallet.

Webroot will catch this specific variant in real time before any encryption takes place. We’re always on the lookout for more, but just in case of new zero day variants, remember that with encrypting ransomware the best protection is going to be a good backup solution. This can be either through the cloud or offline external storage. Keeping it up to date is key so as not to lose productivity. Webroot has backup features built into our consumer product that allow you to have directories constantly synced to the cloud. If you were to get infected by a zero-day variant of encrypting ransomware you can just restore your files back as we save a snapshot history for each of your files up to ten previous copies.

Please see our community post on best practices for securing your environment against encrypting ransomware.

Top Security Predictions for 2016

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As 2015 comes to an end, we all look back at the huge list of big-name data breaches that occured, from passwords revealed to full on dating identities. It was not a pretty year for companies with lacking security protocols to say the least. And while we can sit here and delve into what happened, as a security company we must continue looking forward to what is going to happen next. Lessons were learned in 2015, but there is still going to be breaches, security problems to be solved, and as technology advances, so will the vectors for attack.

To look forward, to continue preparing, we here at Webroot have works on a list of our top 4 security predictions for 2016.

  1. People Push Back:  Tools that prevent unintentional data collection – such as cookie blockers, microphones, malicious advertisements, and camera blockers – will be increasingly adopted by consumers. Many of these tools block ads indiscriminately which will have an impact on legit sites ability to fund themselves. Consumers will also require web companies to disclose consumer data use and how it is being protected.
  1. Increased Attacks on IoT Devices: As more common items add connectivity for convenience, and thus become part of the IoT, it is expected that hackers will take advantage of poorly implemented security. Weaknesses in passwords, firmware updates and the storage of user specific data make IoT devices a prime target and attacks against these devices will increase in 2016.
  1. More Breaches: Cybercriminals will double down on phishing attacks – whether via telephone, texts, tweets, Instagram, Snapchat and other social avenues. With rapid growth on the rise in 2015, attackers will create remote sessions into PCs disguised as a trusted account vendor.  Also, reps from fraudulent sites will offer support which results in a remote connection and users’ systems getting compromised.
  1. 2016 Presidential Elections: There will be a spike in cybercriminal activity that exploits the 2016 US presidential elections and causes mass disruption. The attacks will include spam emails, campaign donation scams, fake election sites and telephone-based threats, which have been on the rise in 2015. Attacks will target social media and will increase in activity as the election night approaches. As a result, candidates will need to be more security-aware than ever before.

With these in mind, this is not the limit of what we will see but more of the avenues that we feel will have the biggest impact on the global threat landscape. What predictions fo you have for this coming year? Share your ideas in the comment box below.

Quick Tips to Protect Your New (and old) Apple Devices

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Apple has projected yet another record holiday for sales, but this should come as no surprise to fellow ‘Macheads’. I myself, am a huge fan of Apple and have been for a quite some time; I still have my iBook, and it still works! My desk is home to an iMac, Macbook, and many other small Apple devices. The one thing that most people believe is that there is no need to worry about security for their beloved Apple devices, which is a bit over inflated. So here are a Full this holiday season.

Top Ten tips for OS X security

  1. Create a standard account (non-admin) for everyday use– Log into the standard account for your everyday activities, and to store your personal information. Whenever an administrator’s password is required, type the admin username, and the appropriate password. This will lead to more password requests than if you were working under an admin account. However these requests should make you think whether you should be entering your password.
  2. Set Gatekeeper to allow Mac App Store and identified developers– Gatekeeper resides under Preferences>Security & Privacy and its main function is to allow the user to control which apps can be run without further escalation and or attention. If you download an application that doesn’t meet the criteria you will not be able to run it.
  3. Stay current with OS X updates– Mac OS X has a built-in software update tool “Software Update”. It’s a good idea to run “Software Update” frequently and install updates when available.
  4. Disable automatic login– Automatic login means that anyone who can access your Mac only needs to start it up to have access to all of your files.
  5. Use the built in Firewall– The firewall can be tuned to your needs whether it be at home, work or travel.
  6. Use a password manager to help prevent phishing attacks– It’s important to create complex, unique passwords, however for most of us, the more complicated the password the easier it is for us to forget it.
  7. Use Mac FileVault for full-disk encryption– FileVault encrypts your entire hard drive using a secure encryption algorithm (XTS-AES 128). You should enable this feature on your Mac because if your hard drive isn’t encrypted, anyone who manages to steal your computer can access any data on it.
  8. Use a Mac anti-virus (WSA)– Let’s face it, Mac malware is real and only getting worse.
  9. Enable iCloud Mac locator and remote wipe– If your system is ever stolen you can log into iCloud.com or use the Find My iPhone app on an iOS device to locate your device, send it a command to lock it, have it issue a sound, or remotely wipe the device.
  10. Use “Secure Empty Trash” to remove data– By default files are simply marked for deletion and not really deleted making file recovery simple. Using Secure Empty Trash things get much more difficult to recover.

Tips to secure your iOS

  1. Enable Passcode Lock. This is one of the key security tips, The stronger the passcode the better. Apple has incorporated a fingerprint scanner in the newer iPhone models which allows users to use their fingerprints for authentication when unlocking their device and making purchases.
  2. Erase all data before selling, trading in, or sending off for repair.
  3. Update. By keeping your apps and operating system up-to-date, you will strengthen the security of your device. You can turn on the automatic downloads feature which will update apps in the background and without the need for you to do anything.
  4. Don’t Jailbreak. Sure, some of the Jailbreak tweaks are cool and can do some fun things but is the lack of security really worth it?
  5. Enable Safari security settings. These settings include blocking pop-ups, disabling autofill, fraud warnings, and the ability to clear cookies/history/cache. Alternatively, you can download Webroot’s secure web browser for iOS.
  6. Disabling Bluetooth/WiFi. There are several freeware tools designed to sniff for Bluetooth and WiFi signals then gather information from open devices. It is also best to not use public WiFi; you don’t really know what the guy sitting at the other table in Starbucks is doing on his computer.
  7. Find my iPhone. This should go without saying, this feature not only helps you find a lost or stolen phone, but it also makes wiping the phone a little harder. I had an iphone stolen and find my iPhone found it five months later… in Canada… someone sold it on ebay.
  8. Disable Siri on Lock screen. Siri is a great tool and assest but she can also talk to much, this will keep her quite until the correct person is able to unlock the device.
  9. Set up a VPN. A Virtual Private Network is a must-have and can bring extra security to anyone who uses their devices on different wireless networks. Some VPN services are free of charge, but some can cost several dollars a week which is more than a fair price for protecting your information.
  10. Turn on two-step verification for Apple ID and iCloud – a great way to prevent issues without someone knowing both the password and the 4-digit verification code.

Russians are not immune to Encrypting Ransomware

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CryptoWall 4.0 users have found that Russian users are spared any encryption when the malware is deployed on their system. That’s because it checks for what keyboard is being used and if Russian is detected as the keyboard language then it will kill itself before encryption. This isn’t that much of a surprise since we’ve always known these guys were Russian (at least the spam servers) and target mainly the US and Europe. But everyone is susceptible to encrypting ransomware so here’s a look at a recent encrypting ransomware what will target Russians.

While this encrypting ransomware may look a little different, it’s pretty much the same as the rest; encrypt your files from a phishing email and hold them ransom for bitcoin payment via tor browser. The encryption routine is done using GPG Tool which is an open source encryption tool and appends the file extension to “.vault”

Once you enter the Onion link into a tor browser you’ll be presented with the following pages

The bitcoin currency is continuing its climb

This is the payment portal – The victim is subject to a price increase after 4 days.

This variant also introduces the “freebie” structure where it allows you 4 free file decrypts. This is so you know what the decryption routine is like and know that you’ll get your files back if you do pay the ransom.

Once you’ve paid for the ransom you have access to download the decryption tool from the portal.

MD5 Analyzed:

87c6023bf8922d84927247c15621a02e

Webroot will catch this specific variant in real time before any encryption takes place. We’re always on the lookout for more, but just in case of new zero day variants, remember that with encrypting ransomware the best protection is going to be a good backup solution. This can be either through the cloud or offline external storage. Keeping it up to date is key so as not to lose productivity. Webroot has backup features built into our consumer product that allow you to have directories constantly synced to the cloud. If you were to get infected by a zero-day variant of encrypting ransomware you can just restore your files back as we save a snapshot history for each of your files up to ten previous copies. Please see our community post on best practices for securing your environment against encrypting ransomware.

 

 

 

What are the security risks with using a router provided by your ISP?

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Internet security isn’t just about your devices, but also what connects your devices to the internet.

Here at Webroot we have seen an influx of customers having problems with ads popping up on their devices while SecureAnywhere is reporting a clean scan. They report seeing multiple ads, some pornographic in nature, while connected to their home network—and only that network. Our advanced malware technicians have found that the DNS settings have been changed on the modem router and were causing these ads.

Getting a router from an ISP (Internet Service Provider) comes with several benefits and security risks. For benefits, the ISP technicians are trained on how to set up and support the modem, as well as being able to log into remotely using a backdoor they have set up to assist customers. This is not a setting you, as a user, can change or turn off.

Arris Cable modems are used by many major ISPs (Time Warner Cable, Comcast, Cox Communications, etc.) for this purpose. They are designed so a technician can login and help set up the router remotely for their customers. The backdoor they use has a password generated for it every day by a publically available algorithm (http://tylerwatt12.com/potd/) or—even worse—it’s a hardcoded password. This is not your default username/password, but a backdoor created by the manufacturer.

Once hackers/non-support technicians have access to the router through the technician’s backdoor, they can change the DNS settings to show ads on any device connected to the router. Because all traffic is being routed through the DNS server, your information can be compromised. Router settings can also be changed to allow for telnet access later if they want to get back in for any reason.

There are several ways they can infect your router, but it is usually done remotely by scouring IP addresses and seeing of the username/password of the day set by the algorithm works. Once they have access to the router, they are free to change the DNS settings as they wish.

How can you tell if you have this kind of infection?

If there are devices on your network receiving ads while only connected to that network—not seeing ads when on other networks (such as at a coffee shop or at the office)—and your antivirus software is reporting no threats, this could indicate the router has been accessed by someone outside your ISP’s company.

What can you do to protect your self?

By buying your own router, there will be no backdoor for ISP technicians. The routers you buy tend to last longer and have better configurations (port forwarding, encryption, SSID). However, you will have to set it up yourself, as major ISPs will not support modems that they do not provide.

Securing cable modems is more difficult than other embedded devices as, in most cases, you cannot choose your own device/firmware, and software updates are almost entirely controlled by your ISP. Below is an incomplete list of suspicious routers. You can also contact your ISP and ask them to address this exploit and provide a firmware update OR provide a non-vulnerable modem. 

  • Arris CM820A
  • Arris DG860
  • Arris DG950A
  • Arris TM501A
  • Arris TM602A
  • Arris TM602B
  • Arris TM722G
  • Arris TM802G
  • Arris TM822G
  • Arris TG862
  • Arris TG862A
  • Arris WBM760A

Sources:

What’s in a name?

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Any time a malware variant hits the news we get numerous requests for information. It is typically quite difficult to provide any information based on names that have been given to threats. A simple way to illustrate this is by using a service such as Virustotal and seeing what name other AV companies use for the same threat. I found a recent article about a new threat that contained a link to a write-up by an AV company including MD5 hashes for the file samples used for the write-up. Below are screen shots of the Virustotal results for one of those files.

The first thing I noticed was that there are numerous names that this is detected as, and they are rather inconsistent. Many of the names used are generic, and there are quite a few heuristic detections included in the results. Another thing I noticed was that the name of the malware from the article and the write-up for this file is nowhere to be found. The AV company whose write-up I got the sample from does detect the file, just not by the name that was in the write-up.

What this shows is that, even though this malware sample was found with a specific name, it is widely detected by generic and heuristic detections. The name that it is detected as becomes rather irrelevant. Identifying new malware and taking it apart to determine how it works and what it does is certainly important, but at the end of the day, simply detecting a file as malicious and removing it is what really matters.

Is 2015 the Year of Mac Malware?

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Lots of blogs, articles and posts have been circulating recently about the increase in mac malware, mostly due to the publishing of Bit9’s report. I think it is wise to clarify what is really happening in the world of malware for Macs. Yes, there has been an increase in malware but what category do they fall under? What the consumers should be aware of and what they should be less concerned with.

Most recently a Mac ransomware proof of concept was announced and as expected the media lost their minds. I have had the opportunity to speak with the creator of the POC and also was able to look into what it does along with what it means for future malware. The author is a threat researcher/developer named Rafael Marques from Brazil. His POC has brought massive attention to the security needs of OS X and the lack of concern that most people feel about Macs. His motive was not to create a malware to use in public mass but to help educate people that Macs are not as safe as they think. I asked him why he decided to create this and his response was to inform people “about the myth that there is no malware for mac”. I couldn’t agree more with him, I recently wrote a blog about the history of mac malware along with another one on how adware is bypassing popular ad-blockers. Although the program he wrote can do as intended, it would need to bypass a few security features thus making it a little more difficult but not impossible. A quote from Cory Doctorow best sums it up, “never underestimate the determination of a kid who is time-rich and cash-poor.”

This is where the public typically gets lost in the industry terms. The proof of concept that he created is malware, but most of the encounters that we come across on macs are not this intense, these are instead PUAs (potentially unwanted application). PUAs are still considered malware for the most part, but they are not really looked at as something to be as concerned with. 2015 has really been the year of PUAs. Every day I go through samples that contain a majority of these PUAs, most of which are adware. These adware programs will try to hide a legit programs and run in the background just to get you to click on annoying pop-ups. VSearch, Genieo, IronCore, Bundlore, Wedownload… These are just a few that we come across every day.

While these programs don’t cause any real harm to the system they do help in showing consumers that Macs are not invincible. Adware is more like a testing ground for malware authors, they create these to figure out ways around security and users. Once an author is aware of how to bypass all the security measures, what’s to stop them from writing a more complex threat? Of course one could argue that my intentions are to get people to buy anti-virus, but I didn’t go into this career to sell a product, I choose my path to help build security and promote it to the world. I think it is very important that people began taking Mac security serious. The next time a ransomware for mac comes out, it may not have a researcher like Rafael creating it to bring awareness, it may have someone wanting to make money on your expense.

CRYPTOWALL 4.0 (updated)

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We know that Cryptowall 3.0 has been hugely successful for the cybercriminals netting them nearly $325 million in its debut year. With over 800 command and control URLs and over 400,000 attempted infections it is easily the most prolific threat of 2015.

 

cryptowall 3 infection

Here it is, what we’ve all been waiting for – the newest edition of Cryptowall. This ransomware comes out with new revisions almost as much as Apple does with iPhones. The bad news is that both will set you back $700.

This is the locally saved html web page that it sends you to. If you don’t notice that, you’ll definitely notice that all your files have been encrypted and a new update is that the entire name of the file has been randomized so you no longer know which file is which. This is to create confusion on the severity of damage and increase the chance that you’ll pay out. As you can see from the first image they congratulate and welcome you to CryptoWall community – how nice. The rest of the instructions are pretty standard on informing you how install a layered tor browser and then connect to the darknet to pay them and get your files back. Notice the additional information they have at the bottom:

image2

These guys actually claim that the CryptoWall is NOT malicious and not intended to harm your data “Together we make the Internet a better and safer place” – who are they fooling? Either way this is new and not seen on previous variants.

On to the payment website and and we can see they immediately want $700. It wasn’t even a year ago when the default payment was $300…

payment

There are some new features like the a free decrypt which was first introduced by coinvault that we discovered a while back. It obviously has helped convince people that the decryption routine is fairly easy to get your files back and that the ransom is genuine and you will get your files back.

We’re currently reversing the sample and will have a more in-depth writeup of its infiltration, payload obfuscation, injection, and file encryption next week.

MD5 analyzed: E73806E3F41F61E7C7A364625CD58F65

Additional MD5 seen:

63358929C0628C869627223E910A21BF
5C88FCF39881B9B49DBD4BD3411E1CCF
32ACFA356104A9CE2403798851512654
CE38545D82858C7A7414B4BD660364A9
5384F752E3A2B59FAD9D0F143CE0215A
CF6D69E47B81FA744052DA33917D40F3
53C82D574E054F02B3163271262E0E74
A891CED376809CF05EFE4BB02EB2CBF3
5384F752E3A2B59FAD9D0F143CE0215A

Webroot will catch this specific variant in real time before any encryption takes place. We’re always on the lookout for more, but just in case of new zero day variants, remember that with encrypting ransomware the best protection is going to be a good backup solution. This can be either through the cloud or offline external storage. Keeping it up to date is key so as not to lose productivity. Webroot has backup features built into our consumer product that allow you to have directories constantly synced to the cloud. If you were to get infected by a zero day variant of encrypting ransomware you can just restore your files back as we save a snapshot history for each of your files up to ten previous copies. Please see our community post on best practices for securing your environment against encrypting ransomware.

Cyber Security and the 2016 Presidential Elections

Reading Time: ~ 3 min.

As National Cyber Security Awareness month is coming to an end, the 2016 presidential election cycle is building momentum and increasingly becoming our nation’s primary focus. Love it or hate it, the presidential elections also create an ideal environment for thieves and cybercriminals alike. Preying on the media’s attention to buzzworthy news, hackers are busy preparing scams to exploit the attention and distraction it inevitability causes.

While the election night is still over a year away, there will certainly be a plethora of media attention given to the event. From social media’s nonstop discovery of breaking news stories to the saturation of TV with campaign ads, the election will become more front and center in our everyday lives. And in this flurry of information are many threats and scams.

While I cannot predict the specific events of the future, I can certainly look at the past to identify trends that still occur today. One such trend and tactic is to use large media events and topics as bait to lure people towards less trustworthy websites, or, in the case of an election year, to fake campaign donation websites. There are many examples from the past, from the death of Osama Bin Laden to the tragic disappearance of MH370, fake websites and social media scams were quick to follow.

So how do you stay protected?

In the wake of a big news story, make sure to be on high alert and question your curiosity when reading up on the event online or through social media. Don’t just click without thinking, consider the source of the link you’re about to click and the destination of that website. Using security technology is also helpful when browsing the web. Aside from using WSA, I also recommend using Chrome with a responsible ad-blocking extension. This combination will keep you defended from online attacks in the event you stumble across a malicious website.

Another tactic that has grown considerably in the past year is the use of telephone-based scams. While these attacks often target banking customers, the presidential election cycle creates a perfect opportunity for attacks where scammers will pose as a campaign representative requesting donations. While this isn’t technically cybercrime per se, these attacks often attempt to gain enough information to lead to further compromises in the cybercrime space.

So how can I tell if the caller is a scammer?

As a rule of thumb, I would not provide any personal information, email address, phone number, etc. to anyone who cold calls, no matter who they claim to be. That said, the election cycle creates a temporary exception in where you might not be surprised to receive a call requesting campaign financial support. Phone scammers can be very convincing and have answers to many initial security concerns. The person might suggest sending you an email with more information about the cause they are campaigning for, which will then be used to further the scam along. A good way to handle such callers is being firm in that you don’t give out such information, and request to be removed from their calling list. If you want to donate, call or visit the foundations website directly. You can also improve telephone-based security on a smartphone by using a phone ID app such as TrueCaller. Such a service can provide you with community-based information about an incoming call.

Ultimately, these are just two examples of threats that will use the 2016 presidential election to their advantage. As the election nears, the number of such attacks will increase and so must your security awareness. While National Cybersecurity Awareness Month has wound down, the lessons taught and learned will continue to be important in order to stay in front of the adapting threat environment.