Combine cutting-edge XDR technology, multi-signal threat intelligence and 24/7 Elite Threat Hunters to help you build a world-class security operation.
Our team delivers the fastest response time in the industry. Threat suppression within just 4 hours of being engaged.
Cyber risk and advisory programs that identify security gaps and build security strategies to address them.
24/7 SOC-as-a-Service with unlimited threat hunting and incident handling.
XDR with machine learning that eliminates noise, enables real-time detection and response, and automatically blocks threats.
Seamless integration and threat investigation across your existing tech stack.
Proactive threat intelligence, original threat research and a world-class team of seasoned industry veterans.
Extend your team capabilities and prevent business disruption with expertise from eSentire.
We balance automated blocks with rapid human-led investigations to manage threats.
Guard endpoints by isolating and remediating threats to prevent lateral spread.
Defend brute force attacks, active intrusions and unauthorized scans.
Investigation and threat detection across multi-cloud or hybrid environments.
Remediate misconfigurations, vulnerabilities and policy violations.
Investigate and respond to compromised identities and insider threats.
Stop ransomware before it spreads.
Meet regulatory compliance mandates.
Detect and respond to zero-day exploits.
End misconfigurations and policy violations.
Defend third-party and supply chain risk.
Prevent disruption by outsourcing MDR.
Adopt a risk-based security approach.
Meet insurability requirements with MDR.
Protect your most sensitive data.
Build a proven security program.
Operationalize timely, accurate, and actionable cyber threat intelligence.
THE THREAT On October 23rd, Fortinet disclosed an actively exploited critical zero-day vulnerability impacting multiple versions for FortiManager. The vulnerability, tracked…
Oct 09, 2024THE THREAT Beginning in early September 2024, eSentire observed an increase in the number of incidents involving Lumma Stealer malware; this activity has remained common leading into…
eSentire is The Authority in Managed Detection and Response Services, protecting the critical data and applications of 2000+ 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.
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.
Multi-Signal MDR with 300+ technology integrations to support your existing investments.
24/7 SOC-as-a-Service with unlimited threat hunting and incident handling.
Three MDR package tiers are available based on per-user pricing and level of risk tolerance.
The latest security advisories, blogs, reports, industry publications and webinars published by TRU.
Compare eSentire to other Managed Detection and Response vendors to see how we stack up against the competition.
See why 2000+ organizations globally have chosen eSentire for their MDR Solution.
Adversaries don’t work 9-5 and neither do we. At eSentire, our 24/7 SOCs are staffed with Elite Threat Hunters and Cyber Analysts who hunt, investigate, contain and respond to threats within minutes.
We have discovered some of the most dangerous threats and nation state attacks in our space – including the Kaseya MSP breach and the more_eggs malware.
Our Security Operations Centers are supported with Threat Intelligence, Tactical Threat Response and Advanced Threat Analytics driven by our Threat Response Unit – the TRU team.
In TRU Positives, eSentire’s Threat Response Unit (TRU) provides a summary of a recent threat investigation. We outline how we responded to the confirmed threat and what recommendations we have going forward.
Here’s the latest from our TRU Team…
In September 2024, the eSentire Threat Response Unit (TRU) responded to an incident where the user downloaded a malicious NFT marketplace project named "nft_marketplace-main" from a GitHub repository. Based on our investigation, it was determined that "nft_marketplace-main" was BeaverTail malware.
Upon installation of the malicious NPM packages through Visual Studio Code, the NPM packages attempted to download a Python executable and associated components from a remote location through a cURL command, attempting to retrieve the initial components of the InvisibleFerret backdoor malware.
The Endpoint agent successfully blocked the execution of the cURL download command, preventing further malicious activity. We did not observe InvisibleFerret deploy, however, we assess the chances as probable that InvisibleFerret components for fingerprinting the infected device were hidden inside the .npl script; as the execution was blocked it was not confirmed.
In response, our team of 24/7 SOC Cyber Analysts responded by isolating the impacted host and alerting the customer with the relevant details.
Upon further investigation by eSentire’s TRU team, it was determined that the observed Tactics, Techniques, and Procedures (TTPs) were consistent with those reported to be used by North Korea threat actors, also tracked as Contagious Interview.
The victimized user visited a GitHub repository and retrieved a Zip archive containing multiple files (Figure 1).
Due to data retention, it is not obvious what prompted the user to visit the project. Based on the detection, as well as other campaign reporting, it was likely from a phishing email or LinkedIn interview follow-up. The user in this incident was a developer, which aligns with previously reported on campaigns by the North Korean threat actors targeting software developers.
The investigation began when the eSentire SOC identified a suspicious command line. The agent blocked the activity outlined in figure 2, which prevented BeaverTail from downloading and executing a subsequent payload. In this case, it was a python executable and associated libraries for InvisibleFerret.
When pivoting on the activity observed, a technical report by Unit42 was discovered. The report included specific command lines and Command-and-Control (C2) connections observed in attacks conducted by North Korean threat actors. The observed incident involved a GitHub project related to NFT and cryptocurrency, another common trait with North Korean threat actors.
Unit42 released an updated technical report that demonstrated additional overlap between indicators observed in the incident that the eSentire SOC and TRU teams responded to, and incidents that had been reported by Unit42.
In the technical report by Unit42, a specific HTTP GET request shares the exact same pattern as the one observed in the incident that the eSentire SOC and TRU teams responded to. This includes the “p.zi” file and the :1224/pdown string which appears to be a unique identifier related to the North Korean threat actors Contagious Interview campaign.
The NPM package masquerading as BeaverTail was downloaded and then opened in visual studio code; the malicious NPM package was installed via the NPM command-line, resulting in the execution of a JavaScript file 'test.js' being launched from the '.vscode' folder (Figure 3).
BeaverTail subsequently launched a cURL command in an attempt to download an additional python executable, and associated library files. The Endpoint agent blocked the execution of the cURL command and script (Figure 4 & 5), thereby preventing further malicious activity (Figure 6).
It should be noted that Figures 4 & 5 were pulled from a public sandbox and were not directly captured in our incident due to data retention but are included to provide additional context to our analysis and assessment.
eSentire's TRU team assesses the chances as probable that BeaverTail would have download InvisibleFerret components through the .npl script; but as the execution was blocked it was not confirmed.
You can access the indicators of compromise here.
The eSentire Threat Response Unit (TRU) is an industry-leading threat research team committed to helping your organization become more resilient. TRU is an elite team of threat hunters and researchers that supports our 24/7 Security Operations Centers (SOCs), builds threat detection models across the eSentire XDR Cloud Platform, and works as an extension of your security team to continuously improve our Managed Detection and Response service. By providing complete visibility across your attack surface and performing global threat sweeps and proactive hypothesis-driven threat hunts augmented by original threat research, we are laser-focused on defending your organization against known and unknown threats.