The Life Cycle of a Compromised (Cloud) Server

Trend Micro Research has developed a go-to resource for all things related to cybercriminal underground hosting and infrastructure. Today we released the second in this three-part series of reports which detail the what, how, and why of cybercriminal hosting (see the first part here).

As part of this report, we dive into the common life cycle of a compromised server from initial compromise to the different stages of monetization preferred by criminals. It’s also important to note that regardless of whether a company’s server is on-premise or cloud-based, criminals don’t care what kind of server they compromise.

To a criminal, any server that is exposed or vulnerable is fair game.

Cloud vs. On-Premise Servers

Cybercriminals don’t care where servers are located. They can leverage the storage space, computation resources, or steal data no matter what type of server they access. Whatever is most exposed will most likely be abused.

As digital transformation continues and potentially picks up to allow for continued remote working, cloud servers are more likely to be exposed. Many enterprise IT teams, unfortunately, are not arranged to provide the same protection for cloud as on-premise servers.

As a side note, we want to emphasize that this scenario applies only to cloud instances replicating the storage or processing power of an on-premise server. Containers or serverless functions won’t fall victim to this same type of compromise. Additionally, if the attacker compromises the cloud account, as opposed to a single running instance, then there is an entirely different attack life cycle as they can spin up computing resources at will. Although this is possible, however, it is not our focus here.

Attack Red Flags

Many IT and security teams might not look for earlier stages of abuse. Before getting hit by ransomware, however, there are other red flags that could alert teams to the breach.

If a server is compromised and used for cryptocurrency mining (also known as cryptomining), this can be one of the biggest red flags for a security team. The discovery of cryptomining malware running on any server should result in the company taking immediate action and initiating an incident response to lock down that server.

This indicator of compromise (IOC) is significant because while cryptomining malware is often seen as less serious compared to other malware types, it is also used as a monetization tactic that can run in the background while server access is being sold for further malicious activity. For example, access could be sold for use as a server for underground hosting. Meanwhile, the data could be exfiltrated and sold as personally identifiable information (PII) or for industrial espionage, or it could be sold for a targeted ransomware attack. It’s possible to think of the presence of cryptomining malware as the proverbial canary in a coal mine: This is the case, at least, for several access-as-a-service (AaaS) criminals who use this as part of their business model.

Attack Life Cycle

Attacks on compromised servers follow a common path:

The monetization lifecycle of a compromised server

Often, targeted ransomware is the final stage. In most cases, asset categorization reveals data that is valuable to the business but not necessarily valuable for espionage.

A deep understanding of the servers and network allows criminals behind a targeted ransomware attack to hit the company where it hurts the most. These criminals would know the dataset, where they live, whether there are backups of the data, and more. With such a detailed blueprint of the organization in their hands, cybercriminals can lock down critical systems and demand higher ransom, as we saw in our 2020 midyear security roundup report.

In addition, while a ransomware attack would be the visible urgent issue for the defender to solve in such an incident, the same attack could also indicate that something far more serious has likely already taken place: the theft of company data, which should be factored into the company’s response planning. More importantly, it should be noted that once a company finds an IOC for cryptocurrency, stopping the attacker right then and there could save them considerable time and money in the future.

Ultimately, no matter where a company’s data is stored, hybrid cloud security is critical to preventing this life cycle.

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Ransomware is Still a Blight on Business

Ransomware is Still a Blight on Business

Trends come and go with alarming regularity in cybersecurity. Yet a persistent menace over the past few years has been ransomware. Now mainly targeting organizations rather than consumers, and with increasingly sophisticated tools and tactics at their disposal, the cybercriminals behind these campaigns have been turning up the heat during the COVID-19 pandemic. That’s why we need industry partnerships like No More Ransom.

Celebrating its fourth anniversary this week, the initiative has helped over four million victims fight the scourge of ransomware, saving hundreds of millions of dollars in the process. At Trend Micro, we’re proud to have played a major part, helping to decrypt over 77 million files for victims.

Not going anywhere

Ransomware has been with us for years, but only really hit the mainstream after the global WannaCry and NotPetya incidents of 2017. Unfortunately, that was just the start. Today, no sector is safe. We saw attacks rage across US municipalities, school districts and hospitals in 2019. Most recently, a major outage at a connected technology giant impacted everything from consumer fitness trackers to on-board flight systems.

Such attacks can hit victim organizations hard. There are serious reputational and financial repercussions from major service outages, and the stakes have been raised even further as attackers now often steal data before encrypting victims’ files. A recent incident at a US cloud computing provider has led to data compromise at over 20 universities and charities in the UK and North America, for example. A separate ransomware attack on a managed service provider earlier this year may cost it up to $70m.

The bad guys have shown no sign of slowing down during the pandemic — quite the reverse. Even as hospitals have been battling to save the lives of patients battling COVID-19, they’ve been targeted by ransomware designed to lock mission-critical systems.

No More Ransom

That’s why we need to celebrate public-private partnerships like No More Ransom, which provides helpful advice for victims and a free decryption tool repository. Over the past four years it has helped 4.2 million visitors from 188 countries, preventing an estimated $632 million in ransom demands finding its way into the pockets of cyber-criminals.

At Trend Micro, we’re proud to have been an associate partner from the very start, contributing our own decryption tools to the scores available today to unlock 140 separate ransomware types. Since the start of No More Ransom, Trend Micro tools have been downloaded nearly half a million times, helping over 50,000 victims globally to decrypt more than 77 million files. We simply can’t put a price on this kind of intervention.

https://www.europol.europa.eu/publications-documents/infographic-4th-anniversary-no-more-ransom

Yet while the initiative is a vital response to the continued threat posed by ransomware, it is not all we can do. To truly beat this menace, we need to educate organizations all over the planet to improve their resilience to such malware threats. That means taking simple steps such as:

I’m also speaking on a panel today hosted by the U.S. Chamber of Commerce on NotPetya and general ransomware attack trends related to the pandemic. Join us to learn more about ransomware from law enforcement agencies, policy makers and businesses.

If your organization has been impacted by ransomware, check the resources available on https://www.nomoreransom.org/ for advice and access to the free decryption tool repository.

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Tax Scams – Everything you need to know to keep your money and data safe

Tax season has always been a pretty nerve-wracking time for hard-working Americans. But over the years, technology advances have arrived to gradually make the process a bit easier. The bad news is that they can also introduce new cyber risks and even more stress.

There are two things that cybercriminals are always on the hunt for: people’s identity data from their accounts, and their money. And during the tax-filing season both can be unwittingly exposed. Over the years, cybercriminals have adapted multiple tools and techniques to part taxpayers with their personal information and funds.

Let’s take look at some of the main threats out there and what you can do to stay safe.

What do they want?

Cybercrime is a highly efficient money-making business. Some reports suggest this underground economy generates as much as $1.5 trillion each year. (See Into the Web of Profit, April 2018, McGuire, Bromium.) And tax-related scams are an increasingly popular way for the bad guys to drive-up profits. The Internal Revenue Service (IRS) claims that “thousands of people have lost millions of dollars and their personal information” to such attacks.

The bottom line is that they’re after one of two things: to trick you into wiring funds to them, and/or to get hold of your personally identifiable information (PII), including bank account and Social Security Numbers (SSNs). This personal data can subsequently be used to defraud you or the IRS, or may be deployed in follow-on identity fraud schemes to capture illicit funds from you.

There are various ways cyber-criminals can achieve these goals. The most common is by using social engineering tactics to trick taxpayers into sending money or personal information. But they might also use malware, either delivered to you personally or targeted at your tax preparer. This means you not only have to look after your own cybersecurity but also demand that the third-party businesses you work with store and transmit your sensitive information securely.

Look out for these scams

Here’s a round-up of the most popular tactics used by tax scammers today:

Impersonation: The fraudster gets in touch pretending to be an IRS representative. This could be via email, phone, social media or even SMS. They usually claim you owe the IRS money in unpaid taxes or fines and demand a wire transfer, or funds from a prepaid debit card. Sometimes they may ask for personal and financial details—for example, by claiming you’re entitled to a large tax refund and they just need you to supply your bank account info.

These interactions are usually pushy. The scammer knows the best way of making you pay up is by creating a sense of urgency and, sometimes, shaming the individual into believing they’ve been withholding tax payments. Phishing emails may look highly convincing, right down to the logo and sender domain, while phone callers will use fake names and badge numbers. Sometimes the scammers use personal data they may have stolen previously or bought on the Dark Web to make their communications seem more convincing.

In some impersonation scams, the fraudsters may even pretend to work for charities and ask for personal details to help disaster victims with tax refund claims.

Spoofing, phishing, and malware: In some cases, a text, email or social media message spoofed to appear as if sent from the IRS or your tax preparer actually contains malware. The scammers use the same tactics as above but trick the recipient into clicking on a malicious link or opening an attachment laden with malware. The covert download that follows could result in: theft of your personal information; your computer being completely hijacked by hackers via remote control software; or a ransomware download that locks your computer until you pay a fee.

Fake tax returns: Another trick the scammers employ is to use stolen SSNs and other personal information to file tax returns on your behalf. They can then try to claim a large payment in tax refunds from the IRS. The PII they use to file in your name may have been taken from a third-party source without your knowledge, and the first you might hear of it is when you go to file a legitimate tax return. It can take months to resolve the problem.

Attacks targeting tax preparers: Over half of Americans use third-party tax preparation companies to help them with their returns. However, this offers another opportunity for scammers to get hold of your sensitive information. In one recently discovered campaign, malware deployed on tax preparers’ websites was designed to download to the visitor’s computer as soon as they loaded the page. The IRS warns that businesses large and small are potentially at risk, as scammers are keen to get hold of tax information which enables them to file highly convincing fake returns in your name.

What to do

The good news is that by taking a few simple steps you can insulate yourself from the worst of these scams. Remember: the IRS does not contact taxpayers by email, text messages or social media to request personal/financial information— so if you receive communications that do, they are definitely a scam. It’s also important to remember that scams happen all year round, not just in the run-up to the tax filing deadline. That means, unfortunately, that you need to be on your guard all the time.

Here are a few other recommendations:

It also pays to demand that your tax preparer take their own precautions to keep your data secure. They should not be sending sensitive data or documents unencrypted in emails and must take steps on their own to combat phishing emails that target employees, since these can cascade to you during your tax preparation process. Whether hosted in the cloud or running on-premises, the servers that hold your data should also have adequate protection—and you have a right (and a duty to yourself) to ask ahead of time what they’re doing to protect it.

According to the IRS tax preparers should put the following internal controls in place:

How Trend Micro can help

Trend Micro offers a range of security tools to help taxpayers keep their personal and financial information safe from fraudsters.

Our flagship consumer solution Trend Micro Security (TMS) provides the following protections:

To find out more, go to our Trend Micro Security website.

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Hackers Expand Their Repertoire as Trend Micro Blocks 52 Billion Threats in 2019

Variety is welcome in most walks of life, but not when it comes to the threat landscape. Yet that is unfortunately the reality facing modern cybersecurity professionals. As Trend Micro’s 2019  roundup report reveals, hackers have an unprecedented array of tools, techniques and procedures at their disposal today. With 52 billion unique threats detected by our filters alone, this is in danger of becoming an overwhelming challenge for many IT security departments.

In response, many CISOs are rightly re-examining how they approach threat defense. Rather than create potential security gaps and risk budget shortfalls through best-of-breed investments, they’re understanding that it may be better to consolidate on one provider that can do it all.

The state of play

Our report provides an alarming snapshot into a threat landscape characterized by volatility and chaos. Financially motivated cybercriminals collaborate and compete with each other on a daily basis to elicit profits from their victims. And there are plenty of those, thanks to increased investments in cloud and digital platforms that have broadened the corporate attack surface.

Three trends in the report stand out:

Ransomware is on the rise: Although the number of new families fell, the number of detected ransomware components jumped by 10% to top 61 million during the year. Attacks have been causing chaos across the US, particularly among under-funded public sector authorities and schools. The recent outage at Redcar council could be ominous for UK local authorities. As if service downtime wasn’t enough, several groups have also begun stealing sensitive data before they encrypt, and releasing it if victims don’t pay up — which will require organisations to evolve their threat defense strategies.

Phishing is evolving: As always, email-borne attacks accounted for the vast majority (91%) of threats we blocked last year, and increased 15% in volume from 2018. What does this mean? That phishing remains the number one vector for attacks on organisations. Although we noted an overall decline in total attempts to visit phishing sites, there were some spikes. Fraudsters appear to be targeting Office 365 in an attempt to bypass security filters: the number of unique phishing URLs that spoofed the Microsoft cloud platform soared by 100% from the previous year. BEC attacks, which the FBI has claimed cost more than any other cybercrime type last year, grew 5%.

The supply chain is exposed: At the same time, the digital supply chain has rapidly expanded in recent years, exposing more organisations to risk. This was particularly notable in the e-commerce space last year, as Magecart gangs managed to compromise an estimated two million sites. Many of these attacks focused on attacking supply chain partners, which provide JavaScript libraries to the victim sites. We also observed an increase in attacks focused on compromising DevOps tools and deployments, such as misconfigured versions of Docker Engine – Community and unsecured Docker hosts.

What happens now?

This is just the tip of the iceberg. We also detected a 189% brute force IoT logins, an increase in mobile malware, and much more. To regain the initiative in the face of such a wide-ranging set of threats, CISOs may find more value in taking a connected threat defence approach. This would consolidate protection onto a single provider across gateways, networks, servers and endpoints, with underlying threat intelligence optimizing defense at each layer.

Here’s a quick checklist of elements to consider:

To find out more, read Trend Micro’s 2019 roundup report here: https://www.trendmicro.com/vinfo/us/security/research-and-analysis/threat-reports/roundup/the-sprawling-reach-of-complex-threats.

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