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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:
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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.
The post The Life Cycle of a Compromised (Cloud) Server appeared first on .
It started with one weird tweet. Then another. Quickly, some of the most prominent accounts on Twitter were all sending out the same message;
I am giving back to the community.
All Bitcoin sent to the address below will be sent back double! If you send $1,000, I will send back $2,000. Only doing this for 30 minutes.
[- BITCOIN WALLET ADDRESS -]
Are Apple, Elon Musk, Barrack Obama, Uber, Joe Biden, and a host of others participating in a very transparent bitcoin scheme?
No. Of course, not. The question was whether or not individual accounts were compromised or if something deeper was going on.
User Account Protection
These high profile accounts are prime targets for cybercriminals. They have a broad reach, and even a brief compromise of one of these accounts would significantly increase a hacker’s reputation in the underground.
That is why these accounts leverage the protections made available by Twitter in order to keep their accounts safe.
This means;
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While it’s believed that one or two of these accounts failed to take these measures, it’s highly unlikely that dozens and dozens of them did. So what happened?
Rumours Swirl
As with any public attack, the Twitter-verse (ironically) was abuzz with speculation. That speculation ramped up when Twitter took the reasonable step of preventing any verified account from tweeting for about three hours.
This step helped prevent any additional scam tweets from being published and further raised the profile of this attack.
While some might shy away from raising the profile of an attack, this was a reasonable trade-off to prevent further damage to affected accounts and to help prevent the attack from taking more ground.
This move also provided a hint as to what was going on. If individual accounts were being attacked, it’s unlikely that this type of movement would’ve done much to prevent the attacker from gaining access. However, if the attacker was accessing a backend system, this mitigation would be effective.
Had Twitter itself been hacked?
Occam’s Razor
When imagining attack scenarios, a direct breach of the main service is a scenario that is often examined in-depth, which is also why it is one of the most planned for scenarios.
Twitter — like any company — has challenges with its systems, but they center primarily around content moderation…their backend security is top-notch.
An example of this an incident in 2018. Twitter engineers made a mistake that meant anyone’s password could have been exposed in their internal logs. Just in case, Twitter urged everyone to reset their password.
While possible, it’s unlikely that Twitter’s backend systems were directly breached. There is a much simpler potential explanation: insider access.
Internal Screenshot
Quickly after the attack, some in the security community noticed a screenshot of an internal support tool from Twitter surfacing in underground discussion forums. This rare inside view showed what appeared to be what a Twitter support team member would see.
This type of access is dangerous. Very dangerous.
Joseph Cox’s article detailing the hack has a key quote,
“We used a rep that literally done all the work for us.”
Anonymous Source
What remains unclear is whether this is a case of social engineering (tricking a privileged insider into taking action) or a malicious insider (someone internally motivated to attack the system).
The difference is important for other defenders out there.
The investigation is ongoing, and Twitter continues to provide updates via @TwitterSupport;
Our investigation is still ongoing but here’s what we know so far:
— Twitter Support (@TwitterSupport) July 16, 2020
Social Engineering
Donnie Sullivan from CNN has a fantastic interview with the legendary Rachel Tobac showing how simple social engineering can be and the dangerous impact it can have;
What is “social engineering,” you ask? @RachelTobac showed me. pic.twitter.com/TAw7FB1QPQ
— Donie O'Sullivan (@donie) July 16, 2020
If this attack was conducted through social engineering, the security team at Twitter would need to implement additional processes and controls to ensure that it doesn’t happen again.
Such a situation is what your team also needs to look at. While password resets, account closures, data transfers, and other critical processes are at particular risk of social engineering, financial transactions are atop the cybercriminal’s target list.
BEC—business email compromise—attacks accounted for USD 1.7 billion in losses in 2019 alone.
Adding additional side-channel confirmations, additional steps for verifications, firm and clear approvals and other process steps can help organizations mitigate these types of social engineering attacks.
Malicious Insider
If the attack turns out to be from a malicious insider. Defenders need to take a different approach.
Malicious insiders are both a security problem and human resource one.
From the security perspective, two key principles help mitigate the potential of these attacks;
Making sure that individuals only have the technical access needed to complete their assigned tasks, and only that access is key to limiting this potential attack. Combined with the smart separation of duties (one person to request a change, another to approval it), this significantly reduces the possibility of these attacks causing harm.
The other—and not often spoken of—side of these attacks is the reason behind the malicious intent. Some people are just malicious, and when presented with an opportunity, they will take it.
Other times, it’s an employee that feels neglected, passed over, or is disgruntled in some other way. A strong internal community, regular communication, and a strong HR program can help address these issues before they escalate to the point where aiding a cybercriminal becomes an enticing choice.
Support Risks
Underlying this whole situation is a more challenging issue; the level of access that support has to any given system.
It’s easy to think of a Twitter account as “yours.” It’s not. It’s part of a system run by a company that needs to monitor the health of the system, respond to support issues, and aid law enforcement when legally required.
All of these requirements necessitate a level of access that most don’t think about.
How often are you sharing sensitive information via direct message? Those messages are most likely accessible by support.
What’s to prevent them from accessing any given account or message at any time? We don’t know.
Hopefully, Twitter—and others—have clear guardrails (technical and policy-based) in place to prevent abuse of support access, and they regularly audit them.
It’s a hard balance to strike. User trust is at stake but also the viability of running a service.
Clear, transparent policies and controls are the keys to success here.
Abuse can be internal or external. Support teams typically have privileged access but are also among the lowest paid in the organization. Support—outside of the SRE community—is usually seen as entry-level.
These teams have highly sensitive access, and when things go south, can do a lot of harm. Again, the principles of least privilege, separation of duties, and a strong set of policies can help.
What’s Next?
In the coming days, more details of the attack will surface. In the meantime, the community is still struggling to reconcile the level of access gained and how it was used.
Getting access to some of the world’s most prominent accounts and then conducting a bitcoin scam? Based on the bitcoin transactions, it appears the cybercriminals made off with a little over USD 100,000. Not insignificant, but surely there were other opportunities?
Occam’s razor can help here again. Bitcoin scams and coin miners are the most direct method fo cybercriminals to capitalized on their efforts. Given the high profile nature of the attack, the time before the discovery was always going to be sure. This may have been the “safest” bet for the criminal(s) to profit from this hack.
In the end, it’s a lesson for users of social networks and other services; even if you take all of the reasonable security precautions, you are relying on the service itself to help protect you. That might not always hold true.
It’s a harsh reminder that the very tooling you put in place to run your service may be its biggest risk for service providers and defenders…a risk that’s often overlooked and underestimated.
In the end, Marques Brownlee sums it up succinctly;
Don't send Bitcoin to strangers.
— Marques Brownlee (@MKBHD) July 15, 2020
What do you think of this entire episode? Let’s talk about it—un-ironically—on Twitter, where I’m @marknca.
The post Twitter Hacked in Bitcoin Scam appeared first on .
The cybercrime economy is one of the runaway success stories of the 21st century — at least, for those who participate in it. Estimates claim it could be worth over $1 trillion annually, more than the GDP of many countries. Part of that success is due to its ability to evolve and shift as the threat landscape changes. Trend Micro has been profiling the underground cybercrime community for many years. Over the past five years, we’ve seen a major shift to new platforms, communications channels, products and services, as trust on the dark web erodes and new market demands emerge.
We also expect the current pandemic to create yet another evolution, as cyber-criminals look to take advantage of new ways of working and systemic vulnerabilities.
Shifts in the underground
Our latest report, Shifts in the Cybercriminal Underground Markets, charts the fascinating progress of cybercrime over the past five years, through detailed analysis of forums, marketplaces and dark web sites around the world. It notes that in many product areas, the cost of items has dropped as they become commoditised: so where in 2015 you expected to pay $1000 per months for crypting services, today they may be as little as $20.
In other areas, such as IoT botnets, cyber-propaganda and stolen gaming account credentials, prices are high as new products spark surging demand. Fortnite logins can sell for around $1,000 on average, for example.
The good news is that law enforcement action appears to be working. Trend Micro has long partnered with Interpol, Europol, national crime agencies and local police to provide assistance in investigations. So it’s good to see that these efforts are having an impact. Many dark web forums and marketplaces have been infiltrated and taken down over the past five years, and our researchers note that current users complain of DDoS-ing and log-in issues.
Cybercriminals have been forced to take extreme measures as trust erodes among the community, for example, by using gaming communications service Discord to arrange trades, and e-commerce platform Shoppy.gg to sell items. A new site called DarkNet Trust was even created to tackle this specific challenge: it aims to verify cybercrime vendors’ reputations by analysing their usernames and PGP fingerprints.
What does the future hold?
However, things rarely stay still on the cybercrime underground. Going forward, we expect to see a range of new tools and techniques flood dark web stores and forums. AI will be at the centre of these efforts. Just as it’s being used by Trend Micro and other companies to root out fraud, sophisticated malware and phishing, it could be deployed in bots designed to predict roll patterns on gambling sites. It could also be used in deepfake services developed to help buyers bypass photo ID systems, or launch sextortion campaigns against individuals.
Some emerging trends are less hi-tech but no less damaging. Log-ins for wearable devices could be stolen and used to request replacements under warranty, defrauding the customer and costing the manufacturers dear. In fact, access to devices, systems and accounts is so common today that we’re already seeing it spun out in “as-a-service” cybercrime offerings. Prices for access to Fortune 500 companies can hit as much as $10,000.
Post-pandemic threats
Then there’s COVID-19. We’re already seeing fraudsters targeted government stimulus money with fake applications, sometimes using phished information from legitimate businesses. And healthcare organisations are being targeted with ransomware as they battle to save lives.
Even as the pandemic recedes, remote working practices are likely to stay in many organisations. What does this mean for cybercrime? It means more targeting of VPN vulnerabilities with malware and DDoS services. And it means more opportunities to compromise corporate networks via connected home devices. Think of it like a kind of Reverse BYOD scenario – instead of bringing devices into work to connect, the corporate network is now merged with home networks.
Tackling such challenges will demand a multi-layered strategy predicated around that familiar trio: people, process and technology. It will require more training, better security for home workers, improved patch management and password security, and much more besides. But most of all it will demand continued insight into global cybercriminals and the platforms they inhabit, to anticipate where the next threats are coming from.
Fortunately, this is where Trend Micro’s expert team of researchers come in. We won’t let them out of our sight.
The post How the Cybercriminal Underground Has Changed in 5 Years appeared first on .
If the past couple of months have taught us anything, it’s that partnerships matter in times of crisis. We’re better, stronger and more resilient when we work together. Specifically, public-private partnerships matter in cybersecurity, which is why Trend Micro is always happy to reach out across industry, academia and law enforcement to offer its expertise.
We are again delighted to be working with long-time partner INTERPOL over the coming weeks on a new awareness campaign to help businesses and remote workers stay safe from a deluge of COVID-19 threats.
The new normal
All over the world, organizations have been forced to rapidly adjust to the new normal: social distancing, government lockdowns and mass remote working. While most have responded superbly to the challenge, there’s no denying that IT security teams and remote access infrastructure are being stretched to the limit. There are understandable concerns that home workers may be more distracted, and therefore likely to click on phishing links, and that their PCs and devices may not be as well protected as corporate equivalents.
At the same time, the bad guys have also reacted quickly to take advantage of the pandemic. Phishing campaigns using COVID as a lure have surged, spoofing health authorities, government departments and corporate senders. BEC attacks try to leverage the fact that home workers may not have colleagues around to check wire transfer requests. And remote infrastructure like RDP endpoints and VPNs are being targeted by ransomware attackers — even healthcare organizations that are simultaneously trying to treat critical patients infected with the virus.
Getting the basics right
That’s why Trend Micro has been pushing out regular updates — not only on the latest scams and threats we’re picking up around the globe, but also with advice on how to secure the newly distributed workforce. Things like improved password security, 2FA for work accounts, automatic software updates, regular back-ups, remote user training, and restricted use of VPNs can all help. We’re also offering six months free use of our flagship Trend Micro Maximum Security product to home workers.
Yet there’s always more to do. Getting the message across as far and wide as possible is where organizations like INTERPOL come in. That’s why we’re delighted to be teaming up with the global policing organization to run a new public awareness campaign throughout May. It builds on highly successful previous recent campaigns we’ve collaborated on, to tackle BEC and crypto-jacking.
This time, we’ll be resharing some key resources on social media to alert users to the range of threats out there, and what businesses and home workers can do to stay safe. And we’ll help to develop infographics and other new messages on how to combat ransomware, online scams, phishing and other threats.
We’re all doing what we can during these difficult days. But if some good can come from a truly terrible event like this, then it’s that we show our strength in the face of adversity. And by following best practices, we can make life much tougher for the cybercriminals looking to profit from tragedy.
The post Teaming up with INTERPOL to combat COVID-19 threats appeared first on .
Cybercriminals are often seen as having the upper hand over the “white hat” community. After all, they’re anonymous, can launch attacks from virtually anywhere in the world, and usually have the element of surprise. But there’s one secret weapon the good guys have: Collaboration. That’s why Trend Micro has always prioritized its partnerships with law enforcement, academia, governments and other cybersecurity businesses.
We’re proud to have contributed to yet another successful collaborative operation with INTERPOL Global Complex for Innovation (IGCI) in Singapore that’s helped to reduce the number of users infected by cryptomining malware by 78%.
Cryptomining On The Rise
Also known as cryptojacking, these attacks have become an increasingly popular way for cybercriminals to make money.
Why?
Because victims don’t know they’ve been infected. The malware sits on their machine in the background mining for digital currency 24/7/365. Increasingly, hackers have taken to launching sophisticated attacks against enterprise IT systems and cloud servers to increase their mining and earning potential. But many still target home computer systems like routers, as these are often left relatively unprotected. Stitch enough of these devices together in a botnet and they have a ready-made cash cow.
That’s why cryptojacking remained the most detected threat in the first half of 2019 in terms of file-based threat components, according to our data.
Unlike serious data breaches, phishing attacks, ransomware and banking Trojans, cryptojacking doesn’t have major impact on the victim. They don’t lose sensitive personal data, there’s no risk of follow-on identity fraud and they’re not extorted for funds by being locked out of their PC.
However, it’s not without consequences: Cryptomining malware can slow your home network to a crawl while running up serious energy bills. It may even bring your home computers to a premature end. Also, there’s always the risk with any kind of malware infection that hackers may switch tactics and use their footprint on your home machines to launch other attacks in the future.
Enter Operation Goldfish Alpha
That’s why we were keen to offer our assistance to INTERPOL during this year’s Operation Goldfish Alpha. Thanks to our broad global visibility into attack trends and infection rates, we were able to articulate the scale of the cryptojacking threat and key mitigation steps, at a pre-operation meeting with ASEAN law enforcement officers in June.
A few months later, we developed and disseminated a key Cryptojacking Mitigation and Prevention guidance document. It details how a vulnerability in MikroTik routers had exposed countless users in the region to the risk of compromise by cryptomining malware. The document explains how to scan for this flaw using Trend Micro HouseCall for Home Networks, and how HouseCall can be used to detect and delete the Coinhive JavaScript that hackers were using to mine for digital currency on infected PCs.
Spectacular Success
Over the five months of Operation Goldfish Alpha, experts from national Computer Emergency Response Teams (CERTs) and police across 10 countries in the region worked to locate the infected routers, notify the victims and use our guidance document to patch the bugs and kick out the hackers.
Having helped to identify over 20,000 routers in the region that were hacked in this way, we’re delighted to say that by November, the number had reduced by at least 78%.
That’s the value of partnerships between law enforcement and private cybersecurity companies: They combine the power of investigative policing with the detailed subject matter expertise, visibility and resources of industry experts like us. We’ll continue to lend a hand wherever we can to make our connected, digital world a safer place.
The post INTERPOL Collaboration Reduces Cryptojacking by 78% appeared first on .
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