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 June 2024, eSentire’s Threat Response Unit (TRU) observed several incidents involving users downloading the ScreenConnect remote access client. ScreenConnect is a remote access tool that can allow unauthorized access to a user's system if exploited by threat actors. We assess with medium confidence that the initial infection vector was a drive-by download.
This occurred when users visited a deceptive site that redirected them to download the ScreenConnect application automatically. With the established session via ScreenConnect, the threat actor dropped an executable file that eventually led to the infection of AsyncRAT, which is a remote access trojan (Figure 1).
Based on a review of available logs, we determined that the user in one case downloaded the ScreenConnect instance from a compromised WordPress site aviranpreschool[.]com, which was redirected from lomklauekabjikaiwoge[.]com. When launched, ScreenConnect connected to threat actor’s instance at fa-histsedueg.screenconnect[.]com.
As mentioned previously, using ScreenConnect, the threat actor dropped the executable file uy5a7ykit5s7xs7isi9i.exe (MD5: 6bdba391a77bb67cb5aaae203d061ea8).
The executable is an NSIS installer that contains an NSI script and embedded AutoIt components and batch scripts.
The NSI script is responsible for executing the batch file named “Industries.cmd” (MD5: 3f8ca557d51e210952bdd7180cb33d10) (Figure 2).
The Industries.cmd batch file performs the following actions:
The script also checks for processes such as avastui.exe (Avast antivirus software), avgui.exe (AVG AntiVirus), nswscsvc.exe (Norton Security), and sophoshealth.exe (Sophos endpoint). If any of these processes are found, it executes a malicious AutoIt script using the original AutoIt executable. It's possible this step is taken to evade detection for renamed binaries by these AV agents.
The malicious AutoIt script is responsible for decrypting the embedded AsyncRAT payload via RC4 and subsequently injecting it into either RegAsm.exe or AppLaunch.exe if bdagent.exe (Bitdefender Agent) is detected as a running process. You can access the configuration for the AsyncRat payload on our GitHub page.
In conclusion, the June 2024 incidents analyzed by eSentire's Threat Response Unit illustrate how threat actors utilized the ScreenConnect client to establish unauthorized remote sessions. By deceiving users into downloading ScreenConnect via misleading websites, the attackers gained remote access and subsequently deployed the AsyncRAT trojan.
We recommend implementing the following controls to help secure your organization:
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.