ZDI-22-1467: (0Day) IronCAD STP File Parsing Uninitialized Pointer Remote Code Execution Vulnerability

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This vulnerability allows remote attackers to execute arbitrary code on affected installations of IronCAD. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

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Ransomware Masquerading as Microsoft Update Targets Home Computers

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A new ransomware threat is currently sweeping its way across home computers. And what’s making it extra tricky is that it’s disguised as an operating system update. 

Be on the lookout for this new ransomware scheme and protect yourself from ransomware with a few of these tips. 

What Is Magniber Ransomware? 

Magniber is a new type of ransomware that is disguised at almost every touchpoint until it seemingly pops out of nowhere demanding money. The attack begins when someone visits a fake Windows 10 update website owned by the Magniber cybercriminal group. Once someone clicks on a malicious link on that site, file-encrypting malware downloads onto the device. 

Another stealth maneuver of Magniber is that the encryption malware downloads as a JavaScript file straight to the memory of the device, which can often slide under an antivirus’ radar. This malware allows the criminal to view, delete, and encrypt files and gain administrator access of the device. Usually, before the person even knows their device is in danger, Magniber reveals itself and demands a ransom payment in exchange for releasing the documents and giving back control of the computer. If the device owner refuses to pay, the criminal threatens to delete the files forever.1 

Personal Ransomware May Be on the Rise 

For the last several years, large companies fell left and right to breaches. Hacker groups infiltrated complex cybersecurity defenses, got ahold of sensitive company or customer information, and threatened to release their findings on the dark web if not paid a hefty ransom. The reasons cybercriminals targeted corporate databases versus personal devices wasn’t just because they could demand multiple millions, but because companies were better equipped to make ransom transactions anonymously. Often, cryptocurrency transactions are untraceable, which allows criminals to remain at large. 

Now that more everyday people are proficient in cryptocurrency, ransomware may shift to targeting personal devices. Though the ransom payments won’t be as lucrative, there also won’t be corporate cybersecurity experts hot on the cybercriminal’s tail. 

How to Keep Your Device Safe 

To avoid ransomware schemes similar to Magniber, adopt these three habits to better protect your device and digital privacy: 

Turn on automatic updates. It’s best practice to accept all new software and device updates, which makes Magniber an especially difficult threat to detect. Consider configuring your device to auto-update. If you enable automatic updates, you can then treat any other popups or update websites with skepticism. To validate if an update prompt is genuine, go to your operating system or device’s corporate page and search for any announcements about new updates.  
Regularly back up your important files. If you store sensitive documents (like your tax returns) or sentimental files (like your wedding photos) on your computer, consider also backing them up on an external hard drive. Not only will that free up memory on your device, but it’ll also protect them in case a cybercriminal takes control of your computer. When your device is scrubbed of these important files in the first place, you can factory reset your device without losing anything. That way, the cybercriminal gets nothing: neither your personal information nor your money. 
Avoid risky sites. Magniber downloaded onto devices after a person visited a site controlled by the cybercriminal. If you’re ever suspicious about any site, it’s best to leave and not click on any links while you’re there. Even sites that attempt to mimic legitimate ones leave a few clues that they’re fake. Check for typos, blurry logos, incorrect grammar, and hyperlinks that direct to long, unfamiliar URLs. 

Ransomware Protection 

If a cybercriminal gets in touch with you and demands a ransom, immediately contact your local FBI field office and file a report with the FBI’s Internet Criminal Complaint Center. From there, the authorities will advise you on how to proceed.  

Something you can start with now to defend against ransomware is to invest in McAfee+ Ultimate. It provides the most thorough device, privacy, and identity protection, including $25,000 in ransomware coverage. 

1ZDNET, “This unusual ransomware attack targets home PCs, so beware 

The post Ransomware Masquerading as Microsoft Update Targets Home Computers appeared first on McAfee Blog.

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Protect yourself from scams this Diwali

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It’s Diwali, a time of light, a time of togetherness, and, of course, a time of celebration. Along with Diwali comes the traditional acts of dana and seva, as well as gift-giving to the friends and family members they honor and love. However, it’s also a time when thieves get busy—where they hop online and take advantage of all that goodwill with all manner of scams. 

It’s unfortunate yet true. Thieves flock to where the money is, and plenty of money gets exchanged online during Diwali. As you shop online for that thoughtful gift or to donate online to a cause you care about, keep an eye out for the scams that these thieves set. Because they’re out there.  

Yet you have several ways you can spot their scams, along with several ways you can protect yourself further from them. The thing is, online thieves tend to use the same old tricks, which means a sharp eye and a little prevention on your part can keep you far safer during Diwali.  

For starters, let’s look at some of the most common scams out there. 

Top online shopping scams to avoid during Diwali 

1) The bogus website scam  

A classic scammer move is to “typosquat” phony email addresses and URLs that look awfully close to legitimate addresses of legitimate companies and retailers. So close that you may overlook them. They often appear in phishing emails and instead of leading you to a great deal, these can in fact link you to scam sites that can then lift your login credentials, payment info, or even funds should you try to place an order through them.  

You can avoid these sites by going to the retailer’s site directly. Be skeptical of any links you receive by email, text, or direct message—it’s best to go to the site yourself by manually typing in the legitimate address yourself and looking for the deal there.  

2) The hot deal scam  

In some cases, thieves will set up shopping websites that offer a popular or hard-to-find item at a great price. Yet if the pricing, availability, or delivery time all look too good to be true for the item in question, it may be a scam designed to harvest your personal info and accounts—because, surprise, they don’t have the item at all. The site will take your payment, yet you’ll never receive the item. What’s more, the scammers will have your payment info and address, which they can use to cause further harm. 

Use caution here before you click. If you’re unsure about a product or retailer, read reviews from trusted websites to help see if it’s legitimate. You can also use a service like Who.Is and see how recently the site was created. If the site was only put up very recently, it could be a sign of a scam. 

3) The fake charity scam 

In the spirit of dana, donating to charities makes for a popular Diwali gesture. Scammers know this too and will set up phony charities to cash in. Some indications that a phony charity has reached you include an urgent pitch that asks you to “act now.” A proper charity will certainly make their case for a donation, yet they won’t pressure you into it. Moreover, phony charities will outright ask for payment in the form of gift cards, wire transfers, money orders, or even cryptocurrency—because once those funds are sent, they’re nearly impossible to reclaim when you find out you’ve been scammed. 

There are plenty of ways to make donations to legitimate charities, and the NGO Darpan site offers resources that can help you make an informed choice 

4) Prize and gift scams 

Whether they come to you by email, direct message, or text message, scammers will blast out phoney prize and gift notifications during Diwali. And of course, there’s a catch. To claim your “prize” or “gift,” the scammers require you to fill out a questionnaire. Once again, there’s no gift or prize in play here. Just a thief on the other end attempting to steal your personal information to commit other fraud down the road.  

Look out for these scams, as many have URLs that end in .cn (the Chinese domain). Both .xyz, and .top are popular URL domains for these scams. Several can look quite legitimate, yet if you haven’t entered in a legitimate contest, drawing, or lottery yourself, there’s a very good chance this is a scam. 

Avoid getting scammed during Diwali 

Aside from knowing how to spot scams, you can take several other preventative measures that can keep you safe as you shop, donate, or simply spend time online. 

Stick with known, legitimate retailers and charities online 

This is a great one to start with. Directly typing in the correct address for online stores and retailers is a prime way to avoid scammers online. As mentioned in the bogus website scam and the prize scams above, thieves will often create web addresses that look nearly identical to legitimate addresses of well-known companies hoping that you won’t look closely at them, then click or tap that bad link.  

If you get an offer sent to you via email, text, or any other message, don’t click the link. Visit the site directly and look for the offer there. 

Look for the lock icon in your browser when you shop 

Secure websites begin their address with “https,” not just “http.” That extra “s” in stands for “secure,” which means that it uses a secure protocol for transmitting sensitive info like passwords, credit card numbers, and the like over the internet. It often appears as a little padlock icon in the address bar of your browser, so double-check for that. If you don’t see that it’s secure, it’s best to avoid making purchases on that website.  

Use a VPN if you’re shopping on public Wi-Fi  

Public Wi-Fi in coffee shops and other public locations can expose your private surfing to prying eyes because those networks are open to all. Using a virtual private network (VPN) encrypts your browsing, shopping, and other internet traffic, thus making it secure from attempts at intercepting your data on public Wi-Fi, such as your passwords and credit card numbers.  

What’s more, a VPN masks your whereabouts and your IP address, plus uses encryption that helps keep your activities private. As a result, companies and data brokers can potentially learn far less about you, your shopping, your travels, your habits, and any other information that they could possibly collect and otherwise profit from. 

Use protection while you shop online 

A complete suite of online protection software like McAfee can offer layers of extra security while you shop. In addition to the VPN, identity, credit monitoring, and other features mentioned above, it includes web browser protection that can block malicious and suspicious links that could lead you down the road to malware or a phishing scam—along with a password manager that can create strong, unique passwords and store them securely as well. Taken together, McAfee offers all-in-one online protection for your identity, privacy, and security that can keep you far safer when you shop online—and as you spend your time online in general. 

A brighter, safer Diwali for you and your family online 

If celebrating Diwali takes you online in any way, keep an eye open for the scams that typically pop up this time of year. Sadly, they’re out there, because it’s such a prime time of year for online shopping, gift-giving, and donations.  

As you can see, thieves use several types of common scams that simply dress themselves up in different ways. Taking a moment to pause and consider what you’re seeing before you click or buy can help you spot those scams.  

Further, using online protection software can help you stay safer still with features that make your time online more private and secure while also preventing you from clicking on any of those malicious links or attachments that crop up during Diwali—and any time of year. 

The post Protect yourself from scams this Diwali appeared first on McAfee Blog.

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