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.
XDR with machine learning that eliminates noise, enables real-time detection and response, and automatically blocks threats.
24/7 SOC-as-a-Service with unlimited threat hunting and incident handling.
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.
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.
Defend brute force attacks, active intrusions and unauthorized scans.
Guard endpoints by isolating and remediating threats to prevent lateral spread.
Investigation and threat detection across multi-cloud or hybrid environments.
Remediate misconfigurations, vulnerabilities and policy violations.
Defend brute force attacks, active intrusions and unauthorized scans.
THE THREAT On February 20th, ConnectWise confirmed that two recently disclosed ScreenConnect vulnerabilities are now under active exploitation. The vulnerabilities are currently tracked as…Feb 09, 2024
THE THREAT On February 7th, CISA, NSA, FBI, along with Five Eyes intelligence partners, published a joint advisory related to state-sponsored threat actors from the People’s Republic of…
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.
Waterloo, ON–February 7, 2024 – eSentire, Inc., the Authority in Managed Detection and Response (MDR), today announced that three of Australia’s top Value-Added Resellers (VARs): Advance Vision Technology, Exigo Tech, and Rubicon 8 have joined eSentire’s CRN 5-Star e3 partner…
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.
We believe a multi-signal approach is paramount to protecting your complete attack surface. See why eSentire MDR means multi-signal telemetry and complete response.
See how our 24/7 SOC Cyber Analysts and Elite Threat Hunters stop even the most advanced cyberattacks before they disrupt your business.
Choose the right mix of Managed Detection and Response, Exposure Management, and Incident Response services to strengthen your cyber resilience.
Try our interactive tools including the MITRE ATT&CK Tool, the SOC Pricing Calculator, the Cybersecurity Maturity Assessment, and our MDR ROI Calculator.
Read the latest security advisories, blogs, reports, industry publications and webinars published by eSentire's Threat Response Unit (TRU).
See why 2000+ organizations count on eSentire to build resilience and prevent business disruption.
eSentire is closely monitoring the Petya (AKA GoldenEye) ransomware outbreak currently impacting businesses and critical infrastructure across Europe and the United States. GoldenEye is a particularly nasty strain of Petya ransomware that leverages the bones of Petya, but course-corrects weak spots in the original Petya strain. Like its predecessor, the GoldenEye variant makes the chance of successful decryption without a key is very low. Attackers improved the effectiveness of the malware by leveraging exploits associated with a the tools leaked by the “shadow brokers” earlier this Spring. Early indicators suggest that companies with out-of-date system patches are most susceptible.
Businesses relying solely on antivirus will also face increased risk, as most AV systems will be incapable of detecting GoldenEye - new hashes are likely to emerge quickly, which means that traditional AV will have difficulty keeping up.
Similar to WannaCry, this attack spreads via Microsoft’s SMBv1 vulnerability. When Petya (a known ransomware), is introduced to a compromised machine it leverages a credential extraction mechanism like MimiKatz, a tool used to extract plaintext passwords. Once inside the network, the malware launches an account escalation attack; it steals credentials from the compromised system to facilitate user account hijacking while simultaneously encrypting the entire hard drive. Based on our lab analysis, we have confirmed that the ETERNALBLUE exploit is one of the propagation vectors. There are also indications of other propagation network mechanisms, among them WEbDAv on admin $ shares and possibly WMIC.
Unlike WannaCry, researchers have yet to discover a kill switch, however there is a possible “vaccine” functionality within the malware. Some claim that Petya checks for a read-only file, C:\\Windows\perfc.dat, and if it finds it, encryption will not run. The vaccine mechanism does not remediate the threat or stop the infection though, as the malware will likely use other functionalities in its attempt to spread across an infected organization.
This attack is evolving by the hour and while researchers have yet to definitively pinpoint malware delivery, most cases indicate that phishing, waterhole attacks and/or a weaponized USB may have served as the entry point to impacted organizations.
Since 2016, ransomware attacks have gradually ramped up. Attackers have refined malware delivery, spread mechanisms and even the customer-centric ransom payment process. What’s troubling is that the time between attacks is shortening, and that attacks themselves are becoming more sophisticated. WannaCry shocked the world with its complexity and rapid spread. Its fileless delivery was a successful test of a relatively new technique. The fact that a researcher discovered the WannaCry kill switch was a lucky break. Odds are we won’t be so lucky this time. Unlike WannaCry, Petya/GoldenEye doesn’t appear to have a kill switch. Within a 24-hour period, the attack has crawled westward, paralyzing businesses, utilities, transportation systems and law firms from eastern Europe to the United States. Clearly, this attack is in its infancy. Companies lacking patch rigor and advanced detection and response capabilities will find themselves at greatest risk in the coming days as preventing and blocking GoldenEye requires more than standard AV.
The eSentire threat intelligence team has confirmed one variant associated with this attack, however broadly there are more than 50 different flavors of ransomware variants in the wild. Of those flavors, behaviors prompt the rapid deletion of files and exfiltration of data. Recently we’ve tracked a new variant which works to lock down passwords before encryption, making backup restoration particularly tricky. This attack amplifies the rapid evolution of ransomware; attacks are becoming more widespread, are moving faster, and are harder to kill. While this attack is hitting Europe harder than other countries (at the moment), it is moving quickly and businesses worldwide should treat this as the warning siren. Take this as an opportunity to ensure that offline backups and system patches are up-to-date, and tested.
While you’re at it, consider implementing these preventative measures, too:
Eldon Sprickerhoff is the original pioneer and inventor of what is now referred to as Managed Detection and Response (MDR). In founding eSentire, he responded to the incipient yet rapidly growing demand for a more proactive approach to preventing and investigating information security breaches. Now with over 20 years of tactical experience, Eldon is acknowledged as a subject matter expert in information security analysis. Eldon holds a Bachelor of Mathematics, Computer Science degree from the University of Waterloo.