Login
Depending on where your travels take you, you might need a new passport—a COVID-19 vaccine passport.
In an effort to kickstart travel and local economies, these so-called vaccine passports are more accurately a certificate. Such a “passport” can offer proof that the holder has been fully vaccinated against the virus, and there are several of these passports developing in the wings. With all of this in motion, I wanted to give families a look at what’s happening so that they can protect their privacy and identity online.
Broadly speaking, a vaccine passport works like this: information such as name, date of birth, date of vaccination, vaccination type, and vaccination lot number are used to create a digital certificate stored in a smartphone or a physical card. The holder can then offer up that proof of vaccination (or a recent negative test result) to businesses, travel authorities, and the like.
The notion of a vaccine passport has actually been around for a while now, such as the “Yellow Card” issued by the World Health Organization (WHO), which documents vaccination against diseases like cholera and yellow fever for travelers. Note that currently there’s no widely accepted standard for COVID-19 vaccine passports. What’s more, conversations continue around the concerns that come with documenting and sharing vaccine information securely. Understandably, it’s a complex topic.
As of this writing, the European Union has started issuing the “EU Digital Covid Certificate,” which allows its holders to travel throughout the EU freely without quarantine restrictions. The UK has its own version in the works, as do other nations in Asia, along with airline carriers too. In the U.S., “passports” appear to be in development on the state level, rather than on the federal level. For example, the state of New York has its Excelsior Pass program and California has its Digital COVID-19 Vaccine Record available to residents. Private airlines and air travel industry groups have launched their own efforts as well, such as the International Air Travel Association’s IATA Travel Pass.
How these passports are rolled out and how they get used will vary, yet vaccine passports may have an impact on the way people can travel as we recover globally from the pandemic. In some cases, they may even determine if people can attend large events that can help localities reboot their economies and public life in general (i.e., concerts, sporting events, and so on).
The development of vaccine passports and all the rules businesses and local authorities set around them may feel a bit out of our hands. However, in terms of your privacy and your family’s privacy, plenty is still very much in your hands. The common denominator across all these vaccine passports is the exchange of personal information—you and your family’s personal information. And where personal information is shared, hackers are sure to follow. This presents a perfect opportunity for you and your family to review your online privacy practices and close any gaps, whether you plan on traveling or not.
I put together a few things you can do to make sure that you and your family can navigate the future use of these passports with your privacy in mind:
What seems like an innocent celebration of your vaccination could put your personal information at risk. The information captured on these cards varies by nation, region, and locality, with some of the cards containing more information than others. However, even basic info such as birthday, vaccine manufacturer and lot number, location of immunization, or doctor’s name can provide the basis of a scam, such as a phishing email or phishing text message. Likewise, such information could get scooped up by a hacker and used to create phony vaccination credentials. Instead of posting that pic of you and your vaccine card, go with a happy selfie instead. And if you’ve already posted, go ahead and delete the image, better to remove it now and stay safe.
As mentioned above, the uncertainty around vaccine passports, and the general uncertainty around the latter days of the pandemic overall, creates opportunities for hackers and cybercrooks. Just as the early pandemic saw phony offers around miracle cures and today we’re seeing offers for phony vaccination cards, you can bet that scams revolving around vaccine passports will follow. The best advice here is to go to a trusted source for information, like the NHS in the UK or the American Medical Association in the U.S. Granted, cybercrooks will launch their phishing campaigns regardless. Here’s what to do if one heads your way:
In all, if someone is asking for any kind of personal or financial information via an email, text, instant message, or the like, chances are it’s a scam. For more, check out this article on how to spot the warning signs of a phishing attack.
In a time of data breaches large and small, checking your credit regularly is a wise move. Doing so will help you quickly spot issues and help you address them, as companies typically have a clear-cut process for dealing with fraud. You can get a free credit report in the U.S. via the Federal Trade Commission (FTC) and other nations like the UK have similar free offerings as well.
Do the same for your children. They’re targets too. High-value targets at that. Their credit reports are clean, which gives cybercrooks a blank slate to work with. Even more attractive is that child identity theft often goes long unnoticed until years later when the child gets older and rents an apartment or applies for their first credit card.
It’s that simple. Given that these vaccine passports will likely involve a digital certificate stored on a smartphone, app, or possibly other devices, protect them so you can protect yourself. Select comprehensive security software that will protect multiple devices so that everyone in your home is covered.
You can bet that rumors will abound as to who is issuing what “passport”, under what restrictions, and with what implications for traveling, dining out, and visiting shops. All of that amounts to plenty of falsehoods and scams that attempt to rob you of your privacy, identity, and even your money. Turn to trusted news sources known for their even-handed reporting, such as Reuters or the Associated Press, and get your information from there. Knowing what the facts about vaccine passports are in your locality will arm you against fear-based attacks.
A few months back, the FTC posted its own blog about sharing vaccine card photos. It’s a great read, in part because they used a helpful analogy to discuss privacy and identity theft:
Think of it this way — identity theft works like a puzzle, made up of pieces of personal information. You don’t want to give identity thieves the pieces they need to finish the picture.
Likewise, any vaccine passport you acquire will become yet another puzzle piece that you have to protect.
In all, with post-pandemic recovery measures evolving before our eyes, keep an eye on your family’s security. Don’t give away any snippets of info that could be used against you and stay on the lookout for the scams hitting the internet that play on people’s uncertainty and fears. COVID-19 passports may be entirely new, yet they give cybercrooks one more way they can play their old tricks.
The post COVID-19 Vaccine Passports: 5 Security Tips for You and Your Family appeared first on McAfee Blogs.
Small business owners are getting a special deal on their online protection through a partnership between McAfee and Visa. With new ways of working creating online opportunities and risks for small business owners, McAfee and Visa have come together to offer comprehensive protection for a changed business landscape.
Designed to help you minimize costs and unexpected interruptions to your business, McAfee® Security for Visa cardholders provides award-winning antivirus, ransomware, and malware protection for all your company devices including PCs, smartphones, and tablets on all major platforms. Visa Small Business cardholders automatically save up to 40% with a 24-month package and up to 60% with a 12-month offer.
Safety features include:
McAfee’s security savings bundle is also part of Visa’s commerce in a box initiative, which has launched in six U.S. cities (D.C., Detroit, Atlanta, Miami, Los Angeles and Chicago). This program features a curated selection of offers, discounts, and bundles from Visa’s Authorize.net and Visa partners designed to help small businesses with what they need to move their business forward digitally — from accepting digital payments and building an eCommerce site to marketing to their audience in new ways and providing online marketing tools to run and protect their business.
The post Small Businesses Save Up to 60% in McAfee and Visa Partnership appeared first on McAfee Blogs.
The latest guidance in the Executive Order on Improving the Nation’s Cybersecurity (EO), Section 2, discusses removing the barriers to sharing threat information. It describes how security partners and service providers are often hesitant or contractually unable to share information about a compromise. The EO helps ensure that security partners and service providers can share intelligence with the government and requires them to share certain breach data with executive level departments and agencies responsible for investigating and remediating incidents, namely CISA, the FBI, and the IC. This approach will enable better comprehensive threat visibility across the Executive Branch departments and agencies to promote early detection and coordinated response actions. Indeed, the threat information sharing section will help enhance the public-private sector partnership that McAfee, and our colleagues in the cyber security industry are committed to supporting. To achieve this goal the EO requires:
The EO is a positive first step towards improving incident awareness at a macro level, though the EO would be even more impactful if it pushed government agencies to share more threat information with the private sector. The U.S. government represents an incredibly large attack surface and being able to identify threats early in one agency or department may very well serve to protect other agencies by enabling stronger predictive and more proactive defenses. While a government-built threat intelligence data lake is a critical first step, I think a logical next step should be opening the focus of threat intelligence sharing to be both real-time and bi-directional.
The EO focuses on the need for the private sector to improve its information sharing and collaboration with the government. However, the guidance is focused more on “post-breach” and unidirectional threat sharing. Real-time, not just “post-breach,” threat sharing improves the speed and effectiveness of countermeasures and early detection. Bi-directional data sharing opens possibilities for things like cross-sector environmental context, timely and prescriptive defensive actions, and enhanced remediation and automation capabilities. Harnessing real-time sector-based threat intelligence is not a unique concept; companies like McAfee have started to deliver on the promise of predictive security using historical threat intelligence to guide proactive security policy decision making.
Real-time threat sharing will make one of the EO’s additional goals, Zero Trust, ultimately more achievable. Zero Trust requires a dynamic analysis layer that will continuously evaluate user and device trust. As environmental variables change, so should the trust and ultimately access and authorization given. If the intent of threat intelligence sharing is to identify potentially compromised or risky assets specific to emerging campaigns, then it stands to reason that the faster that data is shared, the faster trust can be assessed and modified to protect high-value assets.
McAfee has identified the same benefits and challenges as the government for targeted threat intelligence and has developed a useful platform to enable robust threat sharing. We understand the value of sector specific data acting as an early indicator for organizations to ensure protection. Focusing on our own threat intelligence data lakes, we deliver on the promise of sector-specific intelligence by identifying targeted campaigns and threats and then correlating those campaigns to protective measures. As a result, government agencies now have the advantage of predicting, prioritizing, and prescribing appropriate defense changes to stay ahead of industry-focused emerging campaigns. We call that capability MVISION Insights.
This approach serves to drive home the need for collaborative shared threat intelligence. McAfee’s broad set of customers across every major business sector, combined with our threat research organization and ability to identify sector-specific targeted campaigns as they’re emerging, allows customers to benefit from threat intelligence collected from others in their same line of business. The federal government has a wide range of private sector business partners across healthcare, finance, critical infrastructure, and agriculture, to name a few. Each of these partners extends the government attack surface beyond the government-controlled boundary, and each represents an opportunity for compromise.
Imagine a scenario where an HHS healthcare partner is alerted, in real-time across a public/private sector threat intelligence sharing grid, to a threat affecting either the federal government directly or a healthcare partner for a different government agency. This approach allows them to assess their own environment for attack indicators, make quick informed decisions about defensive changes, and limit access where necessary. This type of real-time alerting not only allows the HHS partner to better prepare for a threat, but ultimately serves to reduce the attack surface of the federal government.
Allowing industry partners to develop and participate in building out cyber threat telemetry enables:
The U.S. government can begin to effectively shift focus from a reactive culture to one that is more proactive, enabling faster action against threats (or something like this). In the next EO, the Administration should bulk up its commitment to sharing cyber threat information with the private sector. The capability to exchange cyber threat intelligence data across the industry in standards-based formats in near real time exists today. The collective “we” just needs to make it a priority.
The post White House Executive Order – Removing Barriers to Sharing Threat Information appeared first on McAfee Blogs.
Among the many major shifts in lifestyle during the COVID-19 pandemic, the way we used healthcare was one of the most significant. Providers limited in-person visits, elective procedures were delayed, and we avoided hospitals. In response, we went online and started using telehealth and other virtual solutions in ways we never had before.
Our latest consumer mindset survey confirms this was more than a passing trend, showing an almost 50% rise since the beginning of the pandemic in the use of PCs and Mobile devices to access health information, meet virtually with health care providers, and manage prescriptions. Survey respondents also showed they adapted by increasing their usage of smart fitness devices, like Fitbits, to track their personal health.
Navigating the healthcare system and accessing more of our services through the web means more of our personal information is now online. From patient intake forms to test results, a great deal of data about our health, including confidential information like vaccination records, is potentially available. Survey respondents confirmed that they shared and accessed their personal health information across the internet, despite 1/3 or more of respondents having concerns for their privacy and security of their personal information.
This trend hasn’t gone unnoticed by cybercriminals. In fact, the US Department of Health and Human Services is currently investigating nearly 800 health-related data breaches impacting nearly 60 million individuals. All of which is to say that telehealth advances may help us avoid sitting in a doctor’s office, but we need to be more mindful about our security when using these new online services.
Despite the adoption of many telehealth and online health services, security was still a concern for many of our survey respondents. A majority said the primary reason they do not use smart devices for their personal health was because of privacy and security concerns. Fortunately, just as there is preventive medicine, there are also preventive cybersecurity measures we can take to keep our personal data safer online. Here are a few we recommend:
The shift to managing our health online comes with a few safety considerations, but by following the steps above, we can enjoy convenience and access to a healthier life online and off.
The post How to Make Telehealth Safer for a More Convenient Life Online appeared first on McAfee Blogs.
We all like to think we’d know what to do if an emergency should occur. In split seconds, we try to recall the ratio of chest compressions to breaths of air learned in bygone health classes or that summer spent lifeguarding. We recognize the importance of a “to go” bag those final few days of pregnant pauses and false alarms before a baby arrives. We have seen enough television shows and cooking competitions to know Gordon Ramsey or Guy Fieri will be the first to scold us if we try to put out an erupted kitchen grease fire with anything other than salt and smothering.
We pick up a fair amount of knowledge and traits along the way to employ should disaster strike – and we absolutely take necessary precautions if we are knowingly in harm’s way. For example, those that live within a fault line’s reach are apt to prefer housing with stronger foundations and reinforced windowpanes. If you choose to live close to the warm waters of the Atlantic Ocean’s “hurricane alley,” you most likely know the fastest route to a causeway. An underground storm shelter to escape a tornado’s wily path can certainly come in handy.
We are taught that “hindsight is 20/20,” and that harboring regret is top on the list of feelings to avoid most throughout life. We obey the mantra many scouts learn in youth – being prepared – to the best of our ability. While earth’s natural disasters may never be preventable, it is clear preparation and readiness to face the inevitable can be a key differentiator when it comes to damage that can be incurred.
So far in 2021, we have witnessed major infrastructure impairments, interrupted supply chains, and havoc wreaked on local and federal economies.
This did not happen due to volcanic eruptions, tsunamis, nor mudslides, but rather through security breaches and attacks. And despite headlines shouting and nearly every security vendor urging enterprises the world over that cyberattacks are posed to continue to increase both in frequency and sophistication, especially ransomware threats, organizations have more often than not found themselves on the receiving end of hindsight and regret when it comes to these man-made, modern-day disasters.
So, the question begs to be asked, if the damages mentioned above could have been lessened or avoided through preparation and readiness, why is it still so difficult for CISOs to convince the c-suite that it’s better to be prepared for cyber-disaster, than sorry?
Staying safe and secure is the main goal in any disaster or emergency, but another less-talked-about goal is obviously to avoid what could have been prevented. The phrase, “I told you so,” will never land softly or kindly, especially when you are left surveying the ravaged ruins of what is left in the aftermath.
Many CISOs and SOC workers have encountered this situation recently, mentally kicking themselves or expressing frustration analyzing and evaluating breaches or attacks after they have occurred. Of course, the vulnerabilities are crystal clear when security experts look back on what happened, but muddy and missed when they play out in real time.
Scientists will inform us when a volcanic eruption may be imminent; a tornado will be prefaced with a loud siren meant to be heard throughout the county or immediate area; we often see tropical storms gain momentum and destructive qualities far before they transition to hurricanes and make landfall. This is to say, when it comes to natural disasters, they’re going to happen regardless, but damage prevention is dependent on prediction and experience.
Carefully measured and monitored gaseous pressure under the earth’s surface will indicate when a volcano may be imminent. Because of this, volcanologists can attempt to forewarn residents to vacate an area before disaster hits. This outcome is expected, and systems and processes are in place to thwart damage as much as possible. I imagine along with scientists; we’d be quite surprised if a volcano suddenly started spewing mass quantities of water instead of magma and ash.
We rely on patterns from previous incidents when it comes to geological acts of nature, but in the cybersecurity industry, disasters are man-made, and progressively more dangerous – created with motive, intent, and intelligence.
With cybercriminals, attacks have been unpredictable and indiscriminate. They are infiltrating via multiple attack vectors; sitting unknowingly across networks and systems, leeching data from an organization; and altering entire courses of business as resources are used to bring systems back online, determine causes, and quickly implement solutions. In short, cybercriminals are serving up water when we expect magma nearly every single time and enterprises are struggling to keep up.
The rulebook of what can be planned for and prevented has narrowed. Enterprises need to adopt an updated mindset, knowing that like a natural disaster, damage prevention from a cyber-disaster is dependent on prediction and experience.
We are going to continue to get water when we expect magma, flames when we’re on the lookout for floods, and harsh winds when we anticipate rumbles. Powered by human intelligence, cybercriminals will continue to evolve threats, it will just be a matter of who can stay one step ahead – the good guys or the bad guys. The only constant isn’t a matter of if an attack will happen, but when.
A movement toward proactivity instead of reactivity when addressing a breach or attack after it occurs is crucial against today’s cybercriminals. Organizations must recognize that no industry is immune to cybercriminals and get a better handle on SOC functions and processes, and control over where data travels and lies.
This can mean a massive overhaul of a security stack to streamline solutions and expose manual or siloed processes that can lead to hidden vulnerabilities, evaluating security staff and talent to create better efficiencies, or embracing AI-guided tactics to automate activities and provide quick, actionable next steps should a breach occur.
Early adopters of extended detection and response (XDR) technology are already seeing the benefits this proactivity can hold. The simple, unified visualization XDR provides is a strong vantage point for enterprises seeking greater situational awareness, enhanced insights, and faster time to remediate threats across all vectors from endpoint, network, and the cloud.
Today, the warning siren that disaster is forthcoming has been sounding for a while. Enterprises need to take heed of the alarm to thwart as much damage as possible, as like natural disasters, a cyber-disaster can lead to massive destruction and upheaval.
Want to learn more about McAfee’s XDR technology? Check out McAfee MVISION XDR.
The post Time to Batten the Cyber-Hatches appeared first on McAfee Blogs.
The COVID-19 pandemic forced many of us to quickly adjust to the new normal — case and point, admitted that they switched to digital activities like online banking, social networking, and online shopping in 2020 out of convenience. Research now shows that consumers’ reliance on this technology is here to stay. PwC found that 44% of global consumers now shop more using their smartphones compared to when COVID-19 began. While having the world at your fingertips is convenient, how does this digital lifestyle change expose users to cyber threats, especially attacks on mobile devices?
It’s no secret that cybercriminals tend to manipulate their attacks based on the current trends set by technology users. As you reflect on how increased connectivity affected your everyday life, it’s important to ask yourself what could be lurking in the shadows while using your mobile devices. With more of us relying on our devices there’s plenty of opportunities for hackers. This begs the question, what does mobile security look like in a post-pandemic world?
In addition to the increased adoption of digital devices, we had to figure out how to live our best lives online – from working from home to distance learning to digitally connecting with loved ones. And according to McAfee’s 2021 Consumer Security Mindset Report, these online activities will remain a key part of consumers’ post-pandemic routines. But more time spent online interacting with various apps and services simultaneously increases your chance of exposure to cybersecurity risks and threats. Unsurprisingly, cybercriminals were quick to take advantage of this increase in connectivity. McAfee Labs saw an average of 375 new threats per minute and a surge of cybercriminals exploiting the pandemic through COVID-19 themed phishing campaigns, malicious apps, malware, and more. New mobile malware also increased by 71%, with total malware growing nearly 12% from July 2019 to July 2020. As consumers continue to rely on their mobile devices to complete various tasks, they will also need to adapt their security habits to accommodate for more time spent online.
Here at McAfee, we recognize that the way you and your family live your digital lives has changed. We want to help empower you to protect your online security in your hyper-connected lifestyle. To help provide greater peace of mind while using your mobile devices, follow these tips to help safeguard your security.
When setting up a new device or online account, always change the default credentials to a password or passphrase that is strong and unique. Using different passwords or passphrases for each of your online accounts helps protect the majority of your data if one of your accounts becomes vulnerable. If you are worried about forgetting your passwords, subscribe to a password management tool that will remember them for you.
Remember to physically lock your mobile devices with a security code or using facial recognition as well. This prevents a criminal from unlocking your device and uncovering your personally identifiable information in the event that your phone or laptop is stolen.
Multi-factor authentication provides an extra layer of security, as it requires multiple forms of verification like texting or emailing a secure code to verify your identity. Most popular online sites like Gmail, Dropbox, LinkedIn, Facebook, etc. offer multi-factor authentication, and it takes just a few minutes to set it up. This reduces the risk of successful impersonation by hackers who may have uncovered your credentials.
Hackers tend to lurk in the shadows on public Wi-Fi networks to catch unsuspecting users looking for free internet access on their mobile devices. If you have to conduct transactions on a public Wi-Fi network, use a virtual private network (VPN) like McAfee® Safe Connect to help keep you safe while you’re online.
Be skeptical of text messages claiming to be from companies with peculiar asks or information that seems too good to be true. Instead of clicking on a link within the text, it’s best to go straight to the organization’s website to check your account status or contact customer service.
Some cybercriminals send texts from internet services to hide their identities. Combat this by using the feature on your mobile device that blocks texts sent from the internet or unknown users. For example, you can disable all potential spam messages from the Messages app on an Android device by navigating to Settings, clicking on “Spam protection,” and turning on the “Enable spam protection” switch. Learn more about how you can block robotexts and spam messages on your device.
Prepare your mobile devices for any threat coming their way. To do just that, cover these devices with an extra layer of protection via a mobile security solution, such as McAfee Mobile Security.
COVID-19 changed our relationships with our digital devices, but that does not mean we have to compromise our online security for convenience. Incorporating these tips into your everyday life can help ward off mobile cyber threats and stay a step ahead of hackers.
The post The Future of Mobile in a Post-COVID World & How to Stay Secure appeared first on McAfee Blogs.
This blog was written by Vallabh Chole & Oliver Devane
Over the years, the cybersecurity industry has seen many threats get taken down, such as the Emotet takedown in January 2021. It doesn’t usually take long for another threat to attempt to fill the gap left by the takedown. Hancitor is one such threat.
Like Emotet, Hancitor can send Malspams to spread itself and infect as many users as possible. Hancitor’s main purpose is to distribute other malware such as FickerStealer, Pony, CobaltStrike, Cuba Ransomware and Zeppelin Ransomware. The dropped Cobalt Strike beacons can then be used to move laterally around the infected environment and also execute other malware such as ransomware.
This blog will focus on a new technique used by Hancitor created to prevent crawlers from accessing malicious documents used to download and execute the Hancitor payload.
The infection flow of Hancitor is shown below:
A victim will receive an email with a fake DocuSign template to entice them to click a link. This link leads him to feedproxy.google.com, a service that works similar to an RSS Feed and enables site owners to publish site updates to its users.
When accessing the link, the victim is redirected to the malicious site. The site will check the User-Agent of the browser and if it is a non-Windows User-Agent the victim will be redirected to google.com.
If the victim is on a windows machine, the malicious site will create a cookie using JavaScript and then reload the site.
The code to create the cookie is shown below:
The above code will write the Timezone to value ‘n’ and the time offset to UTC in value ‘d’ and set it into cookie header for an HTTP GET Request.
For example, if this code is executed on a machine with timezone set as BST the values would be:
d = 60
n = “Europe/London”
These values may be used to prevent further malicious activity or deploy a different payload depending on geo location.
Upon reloading, the site will check if the cookie is present and if it is, it will present them with the malicious document.
A WireShark capture of the malicious document which includes the cookie values is shown below:
The document will prompt them to enable macros and, when enabled, it will download the Hancitor DLL and then load it with Rundll32.
Hancitor will then communicate with its C&C and deploy further payloads. If running on a Windows domain, it will download and deploy a Cobalt Strike beacon.
Hancitor will also deploy SendSafe which is a spam module, and this will be used to send out malicious spam emails to infect more victims.
With its ability to send malicious spam emails and deploy Cobalt Strike beacons, we believe that Hancitor will be a threat closely linked to future ransomware attacks much like Emotet was. This threat also highlights the importance of constantly monitoring the threat landscape so that we can react quickly to evolving threats and protect our customers from them.
IOCs
| IOC | Type | IOC | Coverage | Content Version |
| Malicious Document | SHA256 | e389a71dc450ab4077f5a23a8f798b89e4be65373d2958b0b0b517de43d06e3b | W97M/Dropper.hx
|
4641 |
| Hancitor DLL | SHA256 | c703924acdb199914cb585f5ecc6b18426b1a730f67d0f2606afbd38f8132ad6
|
Trojan-Hancitor.a | 4644 |
| Domain hosting Malicious Document | URL | http[:]//onyx-food[.]com/coccus.php | RED | N/A |
| Domain hosting Malicious Document
|
URL | http[:]//feedproxy[.]google[.]com/~r/ugyxcjt/~3/4gu1Lcmj09U/coccus.php | RED | N/A |
Mitre
| Technique ID | Tactic | Technique details |
| T1566.002 | Initial Access | Spam mail with links |
| T1204.001 | Execution | User Execution by opening link. |
| T1204.002 | Execution | Executing downloaded doc |
| T1218 | Defence Evasion | Signed Binary Execution Rundll32 |
| T1055 | Defence Evasion | Downloaded binaries are injected into svchost for execution |
| T1482 | Discovery | Domain Trust Discovery |
| T1071 | C&C | HTTP protocol for communication |
| T1132 | C&C | Data is base64 encoded and xored |
The post Hancitor Making Use of Cookies to Prevent URL Scraping appeared first on McAfee Blogs.
This blog was written by Kiran Raj & Kishan N.
In the last few years, Microsoft Office macro malware using social engineering as a means for malware infection has been a dominant part of the threat landscape. Malware authors continue to evolve their techniques to evade detection. These techniques involve utilizing macro obfuscation, DDE, living off the land tools (LOLBAS), and even utilizing legacy supported XLS formats.
McAfee Labs has discovered a new technique that downloads and executes malicious DLLs (Zloader) without any malicious code present in the initial spammed attachment macro. The objective of this blog is to cover the technical aspect of the newly observed technique.
Infection map
The section below contains the detailed technical analysis of this technique.
The malware arrives through a phishing email containing a Microsoft Word document as an attachment. When the document is opened and macros are enabled, the Word document, in turn, downloads and opens another password-protected Microsoft Excel document.
After downloading the XLS file, the Word VBA reads the cell contents from XLS and creates a new macro for the same XLS file and writes the cell contents to XLS VBA macros as functions.
Once the macros are written and ready, the Word document sets the policy in the registry to Disable Excel Macro Warning and invokes the malicious macro function from the Excel file. The Excel file now downloads the Zloader payload. The Zloader payload is then executed using rundll32.exe.
Figure-1: flowchart of the Infection chain
Here is how the face of the document looks when we open the document (figure 2). Normally, the macros are disabled to run by default by Microsoft Office. The malware authors are aware of this and hence present a lure image to trick the victims guiding them into enabling the macros.
Figure-2: Image of Word Document Face
The userform combo-box components present in the Word document stores all the content required to connect to the remote Excel document including the Excel object, URL, and the password required to open the Excel document. The URL is stored in the Combobox in the form of broken strings which will be later concatenated to form a complete clear string.
Figure-3: URL components (right side) and the password to open downloaded Excel document (“i5x0wbqe81s”) present in user-form components.
Figure-4: Image of the VBA editor
In the above image of macros (figure 4), the code is attempting to download and open the Excel file stored in the malicious domain. Firstly, it creates an Excel application object by using CreateObject() function and reading the string from Combobox-1 (ref figure-2) of Userform-1 which has the string “excel. Application” stored in it. After creating the object, it uses the same object to open the Excel file directly from the malicious URL along with the password without saving the file on the disk by using Workbooks.Open() function.
Figure-5: Word Macro code that reads strings present in random cells in Excel sheet.
The above snippet (figure 5) shows part of the macro code that is reading the strings from the Excel cells.
For Example:
Ixbq = ifk.sheets(3).Cells(44,42).Value
The code is storing the string present in sheet number 3 and the cell location (44,42) into the variable “ixbq”. The Excel.Application object that is assigned to variable “ifk” is used to access sheets and cells from the Excel file that is opened from the malicious domain.
In the below snippet (figure 6), we can observe the strings stored in the variables after being read from the cells. We can observe that it has string related to the registry entry “HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Excel\Security\AccessVBOM” that is used to disable trust access for VBA into Excel and the string “Auto_Open3” that is going to be the entry point of the Excel macro execution.
We can also see the strings “ThisWorkbook”, “REG_DWORD”, “Version”, “ActiveVBProject” and few random functions as well like “Function c4r40() c4r40=1 End Function”. These macro codes cannot be detected using static detection since the content is formed dynamically on run time.
Figure-6: Value of variables after reading Excel cells.
After extracting the contents from the Excel cells, the parent Word file creates a new VBA module in the downloaded Excel file by writing the retrieved contents. Basically, the parent Word document is retrieving the cell contents and writing them to XLS macros.
Once the macro is formed and ready, it modifies the below RegKey to disable trust access for VBA on the victim machine to execute the function seamlessly without any Microsoft Office Warnings.
HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Excel\Security\AccessVBOM
After writing macro contents to Excel file and disabling the trust access, function ’Auto_Open3()’ from newly written excel VBA will be called which downloads zloader dll from the ‘hxxp://heavenlygem.com/22.php?5PH8Z’ with extension .cpl
Figure-7: Image of ’Auto_Open3()’ function
The downloaded dll is saved in %temp% folder and executed by invoking rundll32.exe.
Figure-8: Image of zloader dll invoked by rundll32.exe
Rundll32.exe shell32.dll,Control_RunDLL “<path downloaded dll>”
Windows Rundll32 commands loads and runs 32-bit DLLs that can be used for directly invoking specified functions or used to create shortcuts. In the above command line, the malware uses “Rundll32.exe shell32.dll,Control_RunDLL” function to invoke control.exe (control panel) and passes the DLL path as a parameter, therefore the downloaded DLL is executed by control.exe.
The below image (figure 9) is the face of the password-protected Excel file that is hosted on the server. We can observe random cells storing chunks of strings like “RegDelete”, “ThisWorkbook”, “DeleteLines”, etc.
These strings present in worksheet cells are formed as VBA macro in the later stage.
Figure-9: Image of Remote Excel file.
McAfee’s Endpoint products detect this variant of malware and files dropped during the infection process.
The main malicious document with SHA256 (210f12d1282e90aadb532e7e891cbe4f089ef4f3ec0568dc459fb5d546c95eaf) is detected with V3 package version – 4328.0 as “W97M/Downloader.djx”. The final Zloader payload with SHA-256 (c55a25514c0d860980e5f13b138ae846b36a783a0fdb52041e3a8c6a22c6f5e2)which is a DLL is detected by signature “Zloader-FCVP” with V3 package version – 4327.0
Additionally, with the help of McAfee’s Expert rule feature, customers can strengthen the security by adding custom Expert rules based on the behavior patterns of the malware. The below EP rule is specific to this infection pattern.
McAfee advises all users to avoid opening any email attachments or clicking any links present in the mail without verifying the identity of the sender. Always disable the macro execution for Office files. We advise everyone to read our blog on this new variant of Zloader and its infection cycle to understand more about the threat.
Different techniques & tactics are used by the malware to propagate and we mapped these with the MITRE ATT&CK platform.
| Type | Value | Scanner | Detection Name | Detection Package Version (V3) |
| Main Word Document | 210f12d1282e90aadb532e7e891cbe4f089ef4f3ec0568dc459fb5d546c95eaf | ENS | W97M/Downloader.djx | 4328 |
| Downloaded dll | c55a25514c0d860980e5f13b138ae846b36a783a0fdb52041e3a8c6a22c6f5e2 | ENS | Zloader-FCVP | 4327 |
| URL to download XLS | hxxp://heavenlygem.com/11.php | WebAdvisor
|
Blocked | N/A |
| URL to download dll | hxxp://heavenlygem.com/22.php?5PH8Z | WebAdvisor
|
Blocked | N/A |
Malicious documents have been an entry point for most malware families and these attacks have been evolving their infection techniques and obfuscation, not just limiting to direct downloads of payload from VBA, but creating agents dynamically to download payload as we discussed in this blog. Usage of such agents in the infection chain is not only limited to Word or Excel, but further threats may use other living off the land tools to download its payloads.
Due to security concerns, macros are disabled by default in Microsoft Office applications. We suggest it is safe to enable them only when the document received is from a trusted source.
The post Zloader With a New Infection Technique appeared first on McAfee Blogs.
Microsoft has shipped an emergency security update affecting most Windows users. This update partially addresses a security vulnerability known as PrintNightmare that could allow remote hackers to take over your system.
PrintNightmare could allow hackers to gain control of your computer. This means hackers could perform malicious activities like installing their own apps, stealing your data, and creating new user accounts.
Microsoft recommends Windows 10, 8.1, and 7 users update their computers through Windows Update as soon as possible. Note that an additional patch will likely be required to fully fix the issue, so expect another update prompt from Microsoft in the days to come.
For extra protection against malware that may result from a hack like this one, we recommend an all-in-one security solution, like McAfee Total Protection or McAfee LiveSafe. If a hacker takes advantage of the exploit and tries to install additional malware, McAfee Total Protection/LiveSafe can help protect against those attempts. Learn more about our online security products here.
PrintNightmare exploits a vulnerability in the Windows Print Spooler service. The step-by-step instructions below will guide you through turning off the service to ensure hackers can no longer exploit the security flaw. The Print Spooler will remain off until the PC is rebooted.
Step 1: Press the Windows key, and type Services, clicking on the Services App
Step 2: Scroll down to the Print Spooler Service
Step 3: Right-click on the Print Spooler Service and click Stop.
The post Microsoft Urges Customers to Update Windows as Soon as Possible appeared first on McAfee Blogs.
The Smartsheet enterprise platform has become an essential part of most organizations, as it has done much to transform the way customers conduct business and collaborate, with numerous services available to increase productivity and innovation. Within the McAfee customer base, customers had expressed their commitment to Smartsheet, but wanted to inject the security pedigree of McAfee to make their Smartsheet environments even stronger.
In June 2021, McAfee MVISION Cloud released support for Smartsheet – providing cornerstone CASB services to Smartsheet through the CASB Connect framework, which makes it possible to provide API-based security controls to cloud services, such as:
Utilizing the CASB Connect framework, McAfee MVISION Cloud becomes an authorized third party to a customer’s Smartsheet Event Reporting service. This is an API-based method for McAfee to ingest event/audit logs from Smartsheet.
These logs contain information about what activities occur in Smartsheet. This information has value; McAfee will see user logon activity, sheet creation, user creation activity, sheet updates, deletions, etc. Overall, over 120 unique items are stored in the activity warehouse where intelligence is inferred from it. When an inference is made (example: Insider Threat), the platform can show all the forensics data that lead to that conclusion. This provides value to the Smartsheet customer since it shows potential threats that could lead to data loss, either unintended by a well-meaning end-user or not.
Policies for content detection are another important use-case. Most McAfee customers will utilize Data Loss Prevention (DLP) across their endpoint devices as well as in the cloud utilizing policies that are important to them. Examples of DLP policies could be uncovering credit card numbers, health records, customer lists, specific intellectual property, price lists, and more. Each customer will have some kind of data that is critical for their business, a DLP policy can be crafted to support finding it.
In Smartsheet, when an event from the Event Reporting service is captured that relates to DLP – a field is updated, a file is uploaded, or a sheet is shared, the DLP service in MVISION Cloud will perform an inspection of the event. Should the content or sharing violate a policy, an incident will be raised with forensic details describing what user performed the action and why the violation was flagged. This is important for customers because it operationalizes security in Smartsheet and other cloud applications that MVISION Cloud protects. The same DLP policies can be utilized across all of their critical cloud services, including Smartsheet.
Lastly, MVISION Cloud integrates with most popular Identity Providers (IDP). Through standards-based authentication, MVISION Cloud can enforce policies such as location and device policies that assure that only authorized users connect to Smartsheet; for regulated industries this can be important to ensure no compliance issues are violated as they conduct business.
Smartsheet enterprise customers benefit significantly from MVISION Cloud’s support. Visibility of user activity, threats and sensitive data give users a chance to further entrench their business processes in a cloud app they want to use. Adding security tools to an enterprise platform like Smartsheet reduces overall risk and gives organizations the confidence to more deeply depend on their critical cloud services.
Trying out Smartsheet and McAfee MVISION Cloud is easy. Contact McAfee directly at cloud@mcafee.com or visit resources related to this blog post:
The post Adding Security to Smartsheet with McAfee CASB Connect appeared first on McAfee Blogs.
FreshRSS 