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April 2, 2023
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Enhancing Security Teams with AI-Powered Email Solutions

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02
Apr 2023
Discover email-based attack challenges & how AI security solutions can tackle these attacks with autonomous action, optimized workflows, and user visibility.

The modern security team faces challenges on all fronts – it is too often overstretched dealing with an increased attack surface, enabling workforces for secure remote work, and managing multiple security tools to protect that workforce. Added to that, the surge in more sophisticated phishing campaigns – now supported by AI tools – means that it’s harder than ever to pre-empt attacks. 

The needs of the security team should be a key consideration when deploying an email security solution, as it’s them who will be accountable for the success and maintenance of the product. Minimizing time spent inside the user interface – through trusted detection and response technology combined with intuitive reporting and optimized workflows – should be front of mind for vendors in order to assure teams of their value.

Taking security teams off the frontline 

No team should be spending all of their time maintaining email security policies, releasing emails that shouldn’t have been held, or holding back emails that should have been – all the things that traditional email security solutions have almost forced them to become accustomed to. A day in the life of an admin shouldn’t include tens – and certainly not hundreds – of minutes spent in their email security dashboard. 

At the moment, teams are logging in far too often, and when they do, they’re forced to make individual decisions about safe listing and blocking domains, or releasing emails. These can lead to the creation of blanket rules that open up future windows for attackers – unintended consequences that ultimately create more work in the future. This type of hand-to-hand combat puts security teams on the frontline, when their time could be much better spent doing the high-level strategic work humans are best at.  

Understanding You: A Different Approach to Email Security

In today’s discussions about email security, there is a consensus that relying on a gateway is no longer feasible. The new era is one of ICES (Integrated cloud email security) solutions and other tools leveraging artificial intelligence and APIs. But there's no point adopting new technology with an old philosophy – and most of these solutions use AI to automate the same old approach: looking at past attacks to try and stop the next. 

This is where Darktrace/Email takes a fundamentally different and unique approach. It’s not just about using AI; it’s about using it in the right capacity. Our AI understands you – learning where users log in from, who they email, their behavior throughout the day – to tailor the detection and response process according to their individual profile. There’s no point withholding an email if only a tiny element of it poses a risk – Darktrace/Email takes the least aggressive action required to neutralize a threat. Instead of a blanket allow-deny criteria, it can rewrite links or withhold attachments based on its knowledge of the user’s normal inbox activity. Stopping malicious emails while allowing legitimate emails through – with risky elements neutralized – lifts security teams out of the fire-fighting activities described earlier and frees up their time for more strategic and valuable decision-making.

This is going to get me to reduce my current email security stack… this is going to take it to that level that I need it to”

- Early Look Customer, Darktrace/Email 

Account Takeover 

Embedded account takeover protection is an essential component of modern email security. Security teams need visibility not just over email breaches but of what happens once an attacker has control of an inbox, particularly in the most damaging use cases like Business Email Compromise (BEC) and ransomware. This entails understanding a user’s behavior in their inbox, outbound emails and beyond into their wider account activity. Darktrace captures a user’s activity across email and their Microsoft or Google account in a single pane of glass – detecting and countering all of the markers that could signify a compromised account.  

Insights from other cloud applications and network devices gleaned from Darktrace's wider visibility of the business can bring a 360° understanding of the user, further enhancing detection of account takeover and other harmful activity.

Figure 1: A 360° understanding of a user reveals their digital touchpoints beyond Microsoft

What ‘user-friendly’ actually looks like 

The best user interface is one that you never have to log into. In an ideal world, teams are able to visit their tools less frequently because intelligent AI is automating work previously done by humans. This is made possible by Darktrace’s precision detection and response technology, which takes appropriate action on emails and accounts to neutralize threats without disrupting day-to-day business operations. 

The second-best user interface is one where you can quickly log in and get key insights fast, whether that’s regarding an action taken or the current activity of a user – and then get out. Darktrace/Email enables teams to get key information quickly, at both a high and granular level.  The dashboard offers immediate insights into users and emails, with a real-time snapshot of active user identities, targeted user and actioned emails, segmented by type of attack. 

At every touchpoint, Darktrace reduces friction with optimized workflows. From being able to quickly identify VIPs to safely previewing links and attachments, security teams can get the information they need without needing to switch between windows or navigate inaccessible interfaces. Explainable AI gives users natural-language summaries of individual emails or the overall health of an email environment, and simplified action flows allow security teams to personalize security for different employees – for example, sending VIPs a unique notification, or taking extra precautions around employees who work in accounting. Taken together, this meaning that admins can spend even less time managing policies. 

Figure 2: Darktrace/Email dashboard displaying key information about the email environment in a single pane of glass

The ideal interface is also the one that’s the most accessible to you. The mobile app guarantees convenience for security teams, making available all the main functions of the interface for on-the-go analysis at any time or place. Teams can travel or leave the office while retaining the peace of mind that if a critical incident was to occur, they would be able to get instant visibility on the data and take action without needing to get back to their desks.  

Figure 3: Security admins are able to preview, analyze, and act on emails directly from the Darktrace Mobile App

With every passing day, the security team can rest easier. Every activity is taken into account to help the AI tune and adapt over time to become even better at detecting and responding to threats.   

Having email on the app is going to be game changing” 

- Early Look Customer, Darktrace/Email 

Getting the full picture

Most often, email is the entry point from which a threat actor moves stealthily throughout an organization collecting information and assets. Most solutions look at email in isolation, without prioritizing or connecting disparate events into a wider pattern. 

In contrast, Darktrace/Email integrates seamlessly with Darktrace's Cyber AI Analyst, a technology that conducts autonomous enterprise-wide investigations around every alert produced by the wider Darktrace platform. Through this integration, malicious email activity is analyzed and displayed in the context of the full security incident to which it belongs. As a result, security teams can see why and how a wider problem might have originated in email and spread to other apps, endpoints, or the wider corporate network.

Empowering employees to take an active role in security

The role of the security team can be made more difficult if employees take a lax or disengaged approach to security – or if a user is given too much control, and has the ability to make potentially dangerous decisions. Training employees on security procedures is another to-do which can easily fall to the bottom of the agenda during busy periods, especially as point-in-time phishing simulations have proven to be not particularly effective. 

To this end, Darktrace/Email uses Explainable AI to say in natural language what it thought about an email, and delivers its findings not just to the security team, but optionally to the wider workforce as well. Delivered in the form of contextual banners in emails, periodic digests, or directly in Outlook, these insights transform security education from a quarterly or yearly exercise into real-time security awareness. Our next blog will dive deeper into how employee engagement can support the security team’s efforts and harden defenses throughout the organization. 

Because Darktrace is built on a fundamentally different approach, it not only stops novel and targeted sophisticated attacks but allows legitimate emails to flow through. This is what makes it a truly set-and-forget technology, with the AI taking on much of the heavy lifting previously undertaken by security teams. 

Inside the SOC
Darktrace cyber analysts are world-class experts in threat intelligence, threat hunting and incident response, and provide 24/7 SOC support to thousands of Darktrace customers around the globe. Inside the SOC is exclusively authored by these experts, providing analysis of cyber incidents and threat trends, based on real-world experience in the field.
Author
Dan Fein
VP, Product

Based in New York, Dan joined Darktrace’s technical team in 2015, helping customers quickly achieve a complete and granular understanding of Darktrace’s product suite. Dan has a particular focus on Darktrace/Email, ensuring that it is effectively deployed in complex digital environments, and works closely with the development, marketing, sales, and technical teams. Dan holds a Bachelor’s degree in Computer Science from New York University.

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November 19, 2024

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Darktrace Leading the Future of Network Detection and Response with Recognition from KuppingerCole

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KuppingerCole has recognized Darktrace as an overall Leader, Product Leader, Market Leader and Innovation Leader in the KuppingerCole Leadership Compass: Network Detection and Response (2024).

With the perimeter all but dissolved, Network Detection and Response (NDR) tools are quickly becoming a critical component of the security stack, as the main tool to span the modern network. NDRs connect on-premises infrastructure to cloud, remote workers, identities, SaaS applications, and IoT/OT – something not available to EDR that requires agents and isolates visibility to individual devices.

KuppingerCole Analysts AG designated Darktrace an ‘Overall Leader’ position because of our continual innovation around user-led security. Self-Learning AI together with automated triage through Cyber AI Analyst and real-time autonomous response actions have been instrumental to security teams in stopping potential threats before they become a breach. With this time saved, Darktrace is leading beyond reactive security to truly harden a network, allowing the team to spend more time in preventive security measures.

Network Detection and Response protects where others fail to reach

NDR solutions operate at the network level, deploying inside or parallel to your network to ingest raw traffic via virtual or physical sensors. This gives them unprecedented potential to identify anomalies and possible breaches in any network - far beyond simple on-prem, into dynamic virtual environments, cloud or hybrid networks, cloud applications, and even remote devices accessing the corporate network via ZTNA or VPN.

Rather than looking at processes level data, NDR can detect the lateral movement of an adversary across multiple assets by analyzing network traffic patterns which endpoint solutions may not be able to identify [1]. In the face of a growing, complex environment, organizations large and small, will benefit from using NDRs either in conjunction, or as the foundation for, their Extended Detection and Response (XDR) for a unified view that improves their overall threat detection, ease of investigation and faster response times.

Today's NDR solutions are expected to include advanced ML and artificial intelligence (AI) algorithms [1]

Traditional IDS & IPS systems are labor intensive, requiring continuous rule creation, outdated signature maintenance, and manual monitoring for false positives or incorrect actions. This is no longer viable against a higher volume and changing landscape, making NDR the natural network tool to level against these evolutions. The role of AI in NDRs is designed to meet this challenge, “to reduce both the labor need for analysis and false positives, as well as add value by improving anomaly detection and overall security posture” .

Celebrating success in leadership and innovation

Darktrace is proud to have been recognized as an NDR “Overall Leader” in KuppingerCole Analyst AG’s Leadership Compass. The report gave further recognition to Darktrace as a ‘Product Leader”, “Innovation Leader” and “Market Leader”.

Maximum scores were received for core product categories, in addition to market presence and financial strength. Particular attention was directed to our innovation. This year has seen several NDR updates via Darktrace’s ActiveAI Security Platform version 6.2 which has enhanced investigation workflows and provided new AI transparency within the toolset.

Positive scores were also received for Darktrace’s deployment ecosystem and surrounding support, minimizing the need for extraneous integrations through a unique platform architecture that connects with over 90 other vendors.

High Scores received in Darktrace’s KuppingerCole Spider Chart across Core NDR capability areas
Figure 1: High Scores received in Darktrace’s KuppingerCole Spider Chart across Core NDR capability areas

Darktrace’s pioneering AI approach sets it apart

Darktrace / NETWORK’s approach is fundamentally different to other NDRs. Continual anomaly-based detection (our Self-Learning AI), understands what is normal across each of your network entities, and then examines deviations from these behaviors rather than needing to apply static rules or ML to adversary techniques. As a result, Darktrace / NETWORK can focus on surfacing the novel threats that cannot be anticipated, whilst our proactive solutions expose gaps that can be exploited and reduce the risk of known threats.    

Across the millions of possible network events that may occur, Darktrace’s Cyber AI Analyst reduces that manual workload for SOC teams by presenting only what is most important in complete collated incidents. This accelerates SOC Level 2 analyses of incidents by 10x2, giving time back, first for any necessary response and then for preventive workflows.

Finally, when incidents begin to escalate, Darktrace can natively (or via third-party) autonomously respond and take precise actions based on a contextual understanding of both the affected assets and incident in question so that threats can be disarmed without impacting wider operations.

Within the KuppingerCole report, several standout strengths were listed:

  • Cyber AI Analyst was celebrated as a core differentiator, enhancing both visibility and investigation into critical network issues and allowing a faster response.
  • Darktrace / NETWORK was singled for its user benefits. Both a clear interface for analysts with advanced filtering and analytical tools, and efficient role-based access control (RBAC) and configuration options for administrators.
  • At the product level, Darktrace was recognized for complete network traffic analysis (NTA) capabilities allowing extensive analysis into components like application use/type, fingerprinting, source/destination communication, in addition to comprehensive protocol support across a range of network device types from IT, OT, IoT and mobiles and detailed MITRE ATT&CK mapping.
  • Finally, at the heart of it, Darktrace’s innovation was highlighted in relation to its intrinsic Self Learning AI, utilizing multiple layers of deep learning, neural networks, LLMs, NLP, Generative AI and more to understand network activity and filter it for what’s critical on an individual customer level.

Going beyond reactive security

Darktrace’s visibility and AI-enabled detection, investigation and response enable security teams to focus on hardening gaps in their network through contextual relevance & priority. Darktrace / NETWORK explicitly gives time back to security teams allowing them to focus on the bigger strategic and governance workflows that sometimes get overlooked. This is enabled through proactive solutions intrinsically connected to our NDR:

  • Darktrace / Proactive Exposure Management, which looks beyond just CVE risks to instead discover, prioritize and validate risks by business impact and how to mobilize against them early, to reduce the number of real threats security teams face.
  • Darktrace / Incident Readiness & Recovery, a solution rather than service-based approach to incident response (IR) that lets teams respond in the best way to each incident and proactively test their familiarity and effectiveness of IR workflows with sophisticated incident simulations involving their own analysts and assets.

Together, these solutions allow Darktrace / NETWORK to go beyond the traditional NDR and shift teams to a more hardened and proactive state.

Putting customers first

Customers continue to sit at the forefront of Darktrace R&D, with their emerging needs and pain points being the direct inspiration for our continued innovation.

This year Darktrace / NETWORK has protected thousands of customers against the latest attacks, from data exfil and destruction, to unapproved privilege escalation and ransomware including strains like Medusa, Qilin and AlphV BlackCat.

In each instance, Darktrace / NETWORK was able to provide a holistic lens of the anomalies present in their traffic, collated those that were important, and either responded or gave teams the ability to take targeted actions against their threats – even when adversaries pivoted. In one example of a Gootloader compromise, Darktrace ensured a SOC went from detection to recovery within 5 days, 92.8% faster than the average containment time of 69 days.

Results like these, focused on user-led security, have secured Darktrace’s position within the latest NDR Leadership Compass.

To find out more about what makes Darktrace / NETWORK special, read the full KuppingerCole report.

References

[1] Osman Celik, KuppingerCole Leadership Compass:Network Detection and Response (2024)

[2] Darktrace's AI Analyst customer fleet data

[3] https://www.ibm.com/reports/data-breach

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About the author
Gabriel Few-Wiegratz
Product Marketing Manager

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November 1, 2024

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Inside the SOC

Phishing and Persistence: Darktrace’s Role in Defending Against a Sophisticated Account Takeover

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The exploitation of SaaS platforms

As businesses continue to grow and evolve, the need for sharing ideas through productivity and cloud Software-as-a-Service (SaaS) platforms is becoming increasingly crucial. However, these platforms have also become prime targets for cyber attackers.

Threat actors often exploit these widely-used services to gain unauthorized access, steal sensitive information, and disrupt business operations. The growing reliance on SaaS platforms makes them attractive entry points for cybercriminals, who use sophisticated techniques such as phishing, social engineering, and malware to compromise these systems.

Services like Microsoft 365 are regularly targeted by threat actors looking for an entry point into an organization’s environment to carry out malicious activities. Securing these platforms is crucial to protect business data and ensure operational continuity.

Darktrace / EMAIL detection of the phishing attack

In a recent case, Darktrace observed a customer in the manufacturing sector receiving a phishing email that led to a threat actor logging in and creating an email rule. Threat actors often create email rules to move emails to their inbox, avoiding detection. Additionally, Darktrace detected a spoofed domain registered by the threat actor. Despite already having access to the customer’s SaaS account, the actor seemingly registered this domain to maintain persistence on the network, allowing them to communicate with the spoofed domain and conduct further malicious activity.

Darktrace / EMAIL can help prevent compromises like this one by blocking suspicious emails as soon as they are identified. Darktrace’s AI-driven email detection and response recognizes anomalies that might indicate phishing attempts and applies mitigative actions autonomously to prevent the escalation of an attack.

Unfortunately, in this case, Darktrace was not configured in Autonomous Response mode at the time of the attack, meaning actions had to be manually applied by the customer’s security team. Had it been fully enabled, it would have held the emails, preventing them from reaching the intended recipient and stopping the attack at its inception.

However, Darktrace’s Managed Threat Detection alerted the Security Operations Center (SOC) team to the compromise, enabling them to thoroughly investigate the incident and notify the customer before further damage could occur.

The Managed Threat Detection service continuously monitors customer networks for suspicious activities that may indicate an emerging threat. When such activities are detected, alerts are sent to Darktrace’s expert Cyber Analysts for triage, significantly speeding up the remediation process.

Attack Overview

On May 2, 2024, Darktrace detected a threat actor targeting a customer in the manufacturing sector then an unusual login to their SaaS environment was observed prior to the creation of a new email rule.

Darktrace immediately identified the login as suspicious due to the rarity of the source IP (31.222.254[.]27) and ASN, coupled with the absence of multi-factor authentication (MFA), which was typically required for this account.

The new email rule was intended to mark emails as read and moved to the ‘Conversation History’ folder for inbound emails from a specific domain. The rule was named “….,,,”, likely the attacker attempting to setup their new rule with an unnoteworthy name to ensure it would not be noticed by the account’s legitimate owner. Likewise, by moving emails from a specific domain to ‘Conversation History’, a folder that is rarely used by most users, any phishing emails sent by that domain would remain undetected by the user.

Darktrace’s detection of the unusual SaaS login and subsequent creation of the new email rule “….,,,”.
Figure 1: Darktrace’s detection of the unusual SaaS login and subsequent creation of the new email rule “….,,,”.

The domain in question was identified as being newly registered and an example of a typosquat domain. Typosquatting involves registering new domains with intentional misspelling designed to convince users to visit fake, and often malicious, websites. This technique is often used in phishing campaigns to create a sense of legitimacy and trust and deceive users into providing sensitive information. In this case, the suspicious domain closely resembled several of the customer’s internal domains, indicating an attempt to impersonate the organization’s legitimate internal sites to gain the target’s trust. Furthermore, the creation of this lookalike domain suggests that the attack was highly targeted at this specific customer.

Interestingly, the threat actor registered this spoofed domain despite already having account access. This was likely intended to ensure persistence on the network without having to launch additional phishing attacks. Such use of spoofed domain could allow an attacker to maintain a foothold in their target network and escalate their malicious activities without having to regain access to the account. This persistence can be used for various purposes, including data exfiltration, spreading malware, or launching further attacks.

Following this, Darktrace detected a highly anomalous email being sent to the customer’s account from the same location as the initial unsual SaaS login. Darktrace’s anomaly-based detection is able to identify threats that human security teams and traditional signature-based methods might miss. By analyzing the expected behavior of network users, Darktrace can recognize the subtle deviations from the norm that may indicate malicious activity. Unfortunately, in this instance, without Darktrace’s Autonomous Response capability enabled, the phishing email was able to successfully reach the recipient. While Darktrace / EMAIL did suggest that the email should be held from the recipients inbox, the customer was required to manually approve it.

Despite this, the Darktrace SOC team were still able to support the customer as they were subscribed to the Managed Threat Detection service. Following the detection of the highlight anomalous activity surrounding this compromise, namely the unusual SaaS login followed by a new email rule, an alert was sent to the Darktrace SOC for immediate triage, who then contacted the customer directly urging immediate action.

Conclusion

This case underscores the need to secure SaaS platforms like Microsoft 365 against sophisticated cyber threats. As businesses increasingly rely on these platforms, they become prime targets for attackers seeking unauthorized access and disruption.

Darktrace’s anomaly-based detection and response capabilities are crucial in identifying and mitigating such threats. In this instance, Darktrace detected a phishing email that led to a threat actor logging in and creating a suspicious email rule. The actor also registered a spoofed domain to maintain persistence on the network.

Darktrace / EMAIL, with its AI-driven detection and analysis, can block suspicious emails before they reach the intended recipient, preventing attacks at their inception. Meanwhile, Darktrace’s SOC team promptly investigated the activity and alerted the customer to the compromise, enabling them to take immediate action to remediate the issue and prevent any further damage.

Credit to Vivek Rajan (Cyber Security Analyst) and Ryan Traill (Threat Content Lead).

Appendices

Darktrace Model Detections

  • SaaS / Access / Unusual External Source for SaaS Credential Use
  • SaaS / Compromise / Login From Rare Endpoint While User Is Active
  • SaaS / Resource / Unusual Access to Delegated Resource by Non Owner
  • SaaS / Email Nexus / Unusual Login Location Following Sender Spoof
  • Compliance / Anomalous New Email Rule
  • SaaS / Compromise / Unusual Login and New Email Rule

Indicators of Compromise (IoCs)

IoC - Type - Description + Confidence

31.222.254[.]27 – IP -  Suspicious Login Endpoint

MITRE ATT&CK Mapping

Tactic – Technqiue – Sub-technique of (if applicable)

Cloud Accounts - DEFENSE EVASION, PERSISTENCE, PRIVILEGE ESCALATION, INITIAL ACCESS - T1078.004 - T1078

Cloud Service Dashboard – DISCOVERY - T1538

Compromise Accounts - RESOURCE DEVELOPMENT - T1586

Steal Web Session Cookie - CREDENTIAL ACCESS - T1539

Outlook Rules – PERSISTENCE - T1137.005 - T1137

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About the author
Vivek Rajan
Cyber Analyst
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