Mitigation of Strategic Ransomware Threats with Mandiant Managed Defense

447 min

Ransomware attacks have rapidly increased in frequency and severity since 2017. What was initially considered a nuisance has been adopted by sophisticated attackers in complex, multi-phased attacks that combine data encryption with the threat of data exposure. In this same timeframe, these actors expanded from widely seeding this malware threat to targeting specific organizations and industries—including whole cities. Today, the total costs of a ransomware attack can climb into the millions of dollars.

This evolved threat has driven many organizations to assess, develop and update potential anti-ransomware tactics to accelerate their response. An effective managed detection and response (MDR) capability, such as Mandiant Managed Defense, can mitigate the risk of threats like ransomware that are strategically deployed by APT groups, and assure your C-suite and board of directors that security capabilities are in place. Achieving these capabilities in house can take time and resources.

 

Managed Defense Helps Combat Ransomware

For organizations facing advanced ransomware tactics and threats, Managed Defense offers support from experts who respond to and protect against motivated adversaries every day.

See Threats That Matter Across All Threat Vectors

Attackers that want to use ransomware can enter a victim’s environment through a variety of threat vectors, including Remote Desktop Protocol, spear- phishing emails with malicious links or attachments or through a drive-by- download from a malicious website. Post-compromise, these attackers identify key systems and data to maximize their mission’s chance for success.

For most organizations, gaining visibility and control over the entire enterprise, from the myriad of endpoints to today’s rapidly extending network perimeter, is crucial in detecting a sophisticated attack post-compromise. Rather than stop at the endpoint, Managed Defense maintains end-to-end network visibility to identify anomalous behavior and prioritize critical alerts for investigation.

In addition, Mandiant experts can use email activity to identify new attacker trends and ransomware delivery mechanisms.

Recognize Ransomware Threat Patterns

An organization’s access to skilled analysts with knowledge of ransomware attacker tactics, techniques and procedures is more important than ever. To achieve their objectives, strategic ransomware attackers need to establish a foothold first, and then maintain connectivity to the victim’s environment. For example, Mandiant experts found that MAZE threat actors installed payloads on many servers

and workstations after moving laterally through victims’ networks. The group was then able to acquire and maintain access, escalate privileges and begin to move laterally.

 

In 2019 Mandiant found that for ransomware strategically deployed by APT threat groups among Incident Response customers, the average dwell time—before deploying

the ransomware—was 72 days. While Managed Defense customers were also targeted with ransomware by APT threat groups, in nearly all cases the ransomware component was detected and mitigated before being

deployed. This reduced customers’ average dwell time for strategically deployed ransomware from 72 days to less than 24 hours.

To detect such a strategic ransomware attack, organizations must first uncover these hidden attackers; many organizations do not employ skilled threat hunters who possess expert knowledge of current and historical attacker behavior. Managed Defense threat hunting teams rely

on frontline cyber threat intelligence and unique incident response experience when hunting for strategic ransomware threats.

Respond Before Impact

Because it can infect and encrypt so quickly, quick and effective response to strategic ransomware is

paramount. The wide range of recent ransomware attacks requires security teams to determine the full extent of attacker activity and thoroughly address it. Managed

 

Defense offers around-the-clock monitoring and alert prioritization, so a prioritized alert can be swiftly scoped and investigated by a Mandiant expert.

Managed Defense leverages more than 15 years of high- profile incident response experience to provide rapid assessments and contain threats. Managed Defense consultants work with Mandiant Incident Response specialists to uncover and stop attacker activity in your environment. These rapid response engagements prevent customers from incurring the cost of a full incident response 98% of the time. Managed Defense findings are developed collaboratively with insights from your team and delivered via comprehensive reports in the Managed Defense portal.

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