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TRU INTELLIGENCE CENTER
Our Threat Response Unit (TRU) publishes security advisories, blogs, reports, industry publications and webinars based on its original research and the insights driven through proactive threat hunts.
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SECURITY ADVISORIES
Nov 21, 2022
ProxyNotShell Exploit Released
THE THREAT eSentire is aware of public Proof-of-Concept (PoC) exploit code for the ProxyNotShell Exchange vulnerabilities (CVE-2022-41040 [CVSS:8.8], CVE-2022-41082 [CVSS:8.0]). The publication of…
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ABOUT ESENTIRE
About Us
eSentire is The Authority in Managed Detection and Response Services, protecting the critical data and applications of 1500+ organizations in 80+ countries from known and unknown cyber threats. Founded in 2001, the company’s mission is to hunt, investigate and stop cyber threats before they become business disrupting events.
Read about how we got here
Leadership Work at eSentire
LATEST PRESS RELEASE
Nov 07, 2022
Global Cybersecurity Leader eSentire Partners with InfoTrust to Deliver 24/7 Multi-Signal MDR and IR Services Across Australia
Waterloo, ON and Sydney, Australia – November 9, 2022 – eSentire, Inc., the Authority in Managed Detection and Response (MDR), today announced it has expanded its presence in Australia via a strategic partnership with InfoTrust. InfoTrust is a leading specialized cybersecurity provider that combines next-generation security controls, with the InfoTrust “Connective Tissue” of customer success,…
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We provide sophisticated cybersecurity solutions for Managed Security Service Providers (MSSPs), Managed Service Providers (MSPs), and Value-Added Resellers (VARs). Find out why you should partner with eSentire, the Authority in Managed Detection and Response, today.
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Use Cases
ZERO-DAY ATTACKS

Detect and Respond to Zero-Day Exploits

By definition, a novel zero-day attack cannot be prevented. Your organization’s ability to withstand a zero-day attack is completely dependent upon your capacity to detect and respond to an incident post-exploitation. eSentire Managed Detection and Response (MDR) prevents the most advanced cyberattacks from ever breaking through with the detection and response capabilities needed to stop zero-day exploits in their tracks, by providing complete visibility across your IT environment, including endpoints, networks and cloud environments.

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Proactively identify
zero-day vulnerabilities
before they are exploited

Prevent zero-day attacks
from breaking through

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Managed Detection and Response
(MDR)

ZERO-DAY ATTACKS BY THE NUMBERS

<3weeks

Time taken for vendors to release a patch following the first exploitation attempt of a zero-day vulnerability1

1week

Time that organizations have to patch a zero-day vulnerability before it’s actively exploited in the wild1

80%

of successful data breaches result from new or unknown zero-day exploits2

33%

of zero-day exploits are driven by financial motivation3

1 eSentire Report: The State of Zero-Day Attacks in 2021
2 HHS Cybersecurity Program: Zero-Day Attacks
3 https:/www.technologyre-view.com/2021/09/23/1036140/2021-record-zero-day-hacks-reasons/

Zero-day vulnerabilities are a land of opportunity for adversaries

A zero-day attack takes advantage of an unknown exploit in the wild that exposes a vulnerability in software or hardware that can be capitalized on by cybercriminals to gain access into your environment and deploy ransomware. These vulnerabilities, also known as zero-day vulnerabilities, are weaknesses in any software used by your organization that have been discovered by cybercriminals, but not yet known to the software vendor. As a result, there are no existing patches that users can apply to repair the vulnerability.

An exploit is a piece of software, data, or a sequence of commands used to take advantage of a vulnerability. This combination of information and ability is used by threat actors to launch attacks with devastating impact to their victims.

Zero-day vulnerabilities are challenging for organizations of all sizes to defend against. They can last for weeks or months before they are detected and investigated, which can finally alert the software vendor to develop a patch.

How eSentire Protects Against Zero-Day Attacks

As soon as a new zero-day vulnerability is discovered, we can help your team proactively identify if your organization is at risk through our eSentire Managed Vulnerability Service. In addition, we also provide ongoing 24/7 Threat Hunting, proactive Indicator of Compromise sweeps, and complete response with eSentire Managed Detection and Response (MDR) to put your business ahead of disruption.

eSentire Managed
Vulnerability Service
eSentire Managed
Detection and Response
KEY CHALLENGE

Identify the presence of zero-day vulnerabilities before they’re exploited.

Protect your business from cybercriminals using zero-day exploits to bypass traditional security controls.

HOW WE HELP

We identify vulnerabilities across traditional and dynamic IT assets so you have continuous visibility into your expanding business environment.

We focus on vulnerabilities that present the greatest potential risk to you. You benefit from expert guidance to ensure you’re prioritizing the remediation of these dangerous exploits.

eSentire MDR combines cutting-edge Extended Detection and Response (XDR) technology, multi-signal threat intelligence and the industry’s only 24/7 Elite Threat Hunters to detect and contain zero-day attacks on your behalf.

We minimize the attacker dwell time with a Mean Time to Contain of 15 minutes. Once a threat has been isolated and remediated, we work with you to return affected environments to service.

eSentire Managed
Vulnerability Service

KEY CHALLENGES

Identify the presence of zero-day vulnerabilities before they’re exploited.

HOW WE HELP

We identify vulnerabilities across traditional and dynamic IT assets so you have continuous visibility into your expanding business environment.

We focus on vulnerabilities that present the greatest potential risk to you. You benefit from expert guidance to ensure you’re prioritizing the remediation of these dangerous exploits.

eSentire Managed
Detection and Response

KEY CHALLENGES

Protect your business from cybercriminals using zero-day exploits to bypass traditional security controls.

HOW WE HELP

eSentire MDR combines cutting-edge Extended Detection and Response (XDR) technology, multi-signal threat intelligence and the industry’s only 24/7 Elite Threat Hunters to detect and contain zero-day attacks on your behalf.

We minimize the attacker dwell time with a Mean Time to Contain of 15 minutes. Once a threat has been isolated and remediated, we work with you to return affected environments to service.

The Threat Response Unit (TRU): eSentire’s Elite Threat Hunters

Unique to the industry, eSentire MDR includes 24/7 support from an elite team of threat hunters, eSentire’s Threat Response Unit (TRU). TRU proactively researches emerging threats, including zero-days, and operationalizes proactive global threat hunts across our entire customer base as part of our core MDR offering.

Our TRU team has discovered some of the most dangerous threats and nation state cyberattacks in our space.

TRU proactively hunts and builds new detection models leveraging the power of artificial intelligence pattern recognition to drive new intelligence, containment and response actions across our Atlas XDR platform.

SEE ESENTIRE TRU IN ACTION:

The Kaseya Zero-Day Attacks

Watch this video with one of eSentire’s Elite Threat Hunters, Spence Hutchinson, as he reviews the Kaseya VSA supply chain attacks. Spence outlines how eSentire’s Security Operations Center (SOC) & TRU were able to quickly respond on our customer’s behalf and notify Kaseya of the breaches.

In these 2018 and 2021 attacks, threat actors leveraged zero-day vulnerabilities to push Cryptomining malware and Ransomware to Kaseya VSA customers. Our BlueSteel Machine Learning Engine identified malicious Powershell commands being executed. eSentire’s actions to detect, respond and remediate these attacks demonstrate the importance of MDR services that go beyond alerting and host isolation to deliver complete & robust response.

LEARN MORE ABOUT eSENTIRE’S THREAT RESPONSE UNIT →

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Zero-day Attacks: From Discovering a Vulnerability to Exploitation

Whether or not a newly discovered vulnerability will lead to widespread exploitation is dependent on who discovered it. Zero-day vulnerabilities are most commonly discovered by:

  • Cybersecurity researchers, who strive to discover vulnerabilities so they can be patched before they can be exploited by adversaries. These researchers may be a part of the software vendors’ in-house team or cybersecurity practitioners who work in-house at organizations.

  • White hat researchers, who first notify the software vendors of vulnerabilities so they can be patched before publishing the research at a later date.

  • Nation-state researchers, whose goal is to discover vulnerabilities that pose a risk to national security, in which case they may notify the relevant software vendors. However, nation-state researchers may also choose not to notify the software vendor if the goal is to exploit the vulnerability for national interest.

  • Black hat researchers, whose primary aim is to develop exploits that can be used for malicious purposes.

Once the zero-day vulnerability is discovered, a threat actor must know how to exploit it. Some vulnerabilities are easily exploitable, requiring only slight modifications to existing attack tools, while others are much more complex. With this latter group, there is often a series of incremental steps:

Vulnerability is discovered

Proof-of-concept (PoC) demonstrates the viability of exploitation

Exploit is weaponized in a practical technique

Exploit weaponization and tooling is optimized

Depending on how difficult it can be to weaponize the exploit, this process can take a few days to months. Once weaponized, an exploit may be used exclusively by a particular threat actor or sold on Dark Web marketplaces.

REPORT

The State of Zero-Day Attacks in 2021

Read Now

Team eSentire In Action

ProxyShell

In August 2021, a cybersecurity researcher revealed three ProxyShell zero-day vulnerabilities and how they could be exploited on Microsoft Exchange servers at Black Hat 2021. Quickly after disclosure of the technical vulnerability details, cybercriminals began to determine how they could exploit the ProxyShell vulnerabilities.

eSentire’s Threat Response Unit (TRU) was able to coordinate with our 24/7 Security Operations Center (SOC) Cyber Analysts to proactively identify if any customers were impacted by the vulnerabilities, develop detections based on the Indicators of Compromise (IOCs), and perform global threat hunts for ProxyShell.

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Log4j

In December 2021, security researchers released details and Proof-of-Concept (PoC) exploit code for Remote Code Execution of a vulnerability impacting the Apache Log4j Java-based logging library.

Shortly after, eSentire’s Threat Response Unit (TRU) observed scanning for the vulnerability, Cobalt Strike activity and crypto mining payloads in addition to the targeting of web servers. There were also reports in the wild of the Log4j exploitation resulting in ransomware deployments.

In response, TRU coordinated with our 24/7 SOC Cyber Analysts to proactively identify if any customers were impacted by the vulnerabilities, developed detections based on the Indicators of Compromise (IOCs), and conducted proactive global threat hunts for Log4j.

Zero Day Carousel Example2 img1 v3
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We Own The R in MDR

Not all MDR is created equal. Learn more about the Response & Remediation you can expect from eSentire.

Learn About the R in MDR

Minimize the Threat of Zero-Day Attacks

Your attack surface is an ever-expanding ecosystem of dynamic IT assets being targeted by threat actors that continue weaponizing new zero-day vulnerabilities. Without leveraging a comprehensive vulnerability management program and MDR, it’s easy for threat actors to exploit the latest CVEs and zero-days to deploy ransomware and malware in your environment.

eSentire Multi-Signal MDR

eSentire is the Authority in Managed Detection and Response, protecting the critical data and applications of 1500+ organizations in 80+ countries from known and unknown cyber threats. Team eSentire’s mission is to hunt, investigate and stop cyber threats before they become business disrupting events.

With eSentire MDR, you get:

  • 24/7 Always-on Monitoring, Threat Hunting, and Threat Disruption & Containment
  • Mean Time to Contain: 15 Minutes
  • Machine Learning XDR Cloud Platform
  • Multi-signal Coverage and Visibility
  • Automated Blocking
  • Proactive Manual Threat Containment and Response
  • Threat Advisories & Thought Leadership
  • Cyber Risk Advisor
  • Operational Reporting with 24/7 Insight Portal access
Read the Data Sheet

eSentire Managed Vulnerability Service

Our Managed Vulnerability Service continuously identifies vulnerabilities across your on-premises and cloud environments with help from eSentire experts who act as an extension of your team providing analysis and remediation guidance. We schedule and execute vulnerability scans, manage the platform and refine your risk profile while supporting remediation plans.

The benefits of Managed Vulnerability Service include:

  • Identifies vulnerabilities across dynamic and expanding IT assets
  • Improves your vulnerability scanning consistency and timeliness
  • Tracks and measures your vulnerabilities lifecycle
  • Prioritizes remediation against greatest potential business risk
  • Verifies remediation and quality assurance
  • Minimizes your vulnerability discovery to remediation timeframe
  • Tracks and measures programmatic improvements
  • Reduces your operational, staffing and resource constraints
  • Satisfies your regulatory requirements
Read the Data Sheet

Security Leaders Count on eSentire

Privateequity quote Testimonial Thumbnail V2
eSentire’s Managed Vulnerability service is excellent! With eSentire’s guidance, we have been able to leverage the Tenable.io platform and uncover new features. They’ve provided expertise on a monthly basis to fully maximize the platform’s capabilities and help in prioritizing remediation actions to improve our overall security strategy."
Security Analyst
Private Equity Firm
Align greyscale logo
In one solution you are achieving three big main objectives of your cybersecurity program. You’re getting the visibility, you’re getting the detection and identification of potentially bad traffic and you’re getting response if anything is detected as malicious."
Alex Bazay
CISO | Align Communications
Riverside greyscale logo
The combination of tools, technology and eSentire's Security Operations Center (SOC) means that we have eyes and ears on our network at all times. We consider eSentire as an extension of our team."
Eric Feldman
Chief Information Officer | Riverside
Wetherby greyscale logo
It’s a pleasure working with a group of people that know what they’re doing. They are an extension of the Wetherby technical security team"
Trevor Hicks
Principal and CTO | Wetherby Asset Management
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We're here to help! Submit your information and an eSentire Representative will be in touch to discuss how we can put your business ahead of disruption from zero-day attacks.