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2024-06-12 14:00:00 | Aperçu sur les cyber-menaces ciblant les utilisateurs et les entreprises au Brésil Insights on Cyber Threats Targeting Users and Enterprises in Brazil (lien direct) |
Written by: Kristen Dennesen, Luke McNamara, Dmitrij Lenz, Adam Weidemann, Aline Bueno
Individuals and organizations in Brazil face a unique cyber threat landscape because it is a complex interplay of global and local threats, posing significant risks to individuals, organizations, and critical sectors of Brazilian society. Many of the cyber espionage threat actors that are prolific in campaigns across the globe are also active in carrying out attempted intrusions into critical sectors of Brazilian society. Brazil also faces threats posed by the worldwide increase in multifaceted extortion, as ransomware and data theft continue to rise. At the same time, the threat landscape in Brazil is shaped by a domestic cybercriminal market, where threat actors coordinate to carry out account takeovers, conduct carding and fraud, deploy banking malware and facilitate other cyber threats targeting Brazilians. The rise of the Global South, with Brazil at the forefront, marks a significant shift in the geopolitical landscape; one that extends into the cyber realm. As Brazil\'s influence grows, so does its digital footprint, making it an increasingly attractive target for cyber threats originating from both global and domestic actors. This blog post brings together Google\'s collective understanding of the Brazilian threat landscape, combining insights from Google\'s Threat Analysis Group (TAG) and Mandiant\'s frontline intelligence. As Brazil\'s economic and geopolitical role in global affairs continues to rise, threat actors from an array of motivations will further seek opportunities to exploit the digital infrastructure that Brazilians rely upon across all aspects of society. By sharing our global perspective, we hope to enable greater resiliency in mitigating these threats. Google uses the results of our research to improve the safety and security of our products, making them secure by default. Chrome OS has built-in and proactive security to protect from ransomware, and there have been no reported ransomware attacks ever on any business, education, or consumer Chrome OS device. Google security teams continuously monitor for new threat activity, and all identified websites and domains are added to Safe Browsing to protect users from further exploitation. We deploy and constantly update Android detections to protect users\' devices and prevent malicious actors from publishing malware to the Google Play Store. We send targeted Gmail and Workspace users government-backed attacker alerts, notifying them of the activity and encouraging potential targets to enable Enhanced Safe Browsing for Chrome and ensure that all devices are updated. Cyber Espionage Operations Targeting Brazil Brazil\'s status as a globally influential power and the largest economy in South America have drawn attention from c |
Ransomware Spam Malware Tool Vulnerability Threat Mobile Medical Cloud Technical | APT 28 | ★★ |
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2024-06-03 14:00:00 | Ransomwares rebonds: la menace d'extorsion augmente en 2023, les attaquants s'appuient sur les outils accessibles au public et légitimes Ransomware Rebounds: Extortion Threat Surges in 2023, Attackers Rely on Publicly Available and Legitimate Tools (lien direct) |
Written by: Bavi Sadayappan, Zach Riddle, Jordan Nuce, Joshua Shilko, Jeremy Kennelly
A version of this blog post was published to the Mandiant Advantage portal on April 18, 2024. Executive Summary In 2023, Mandiant observed an increase in ransomware activity as compared to 2022, based on a significant rise in posts on data leak sites and a moderate increase in Mandiant-led ransomware investigations. Mandiant observed an increase in the proportion of new ransomware variants compared to new families, with around one third of new families observed in 2023 being variants of previously identified ransomware families. Actors engaged in the post-compromise deployment of ransomware continue to predominately rely on commercially available and legitimate tools to facilitate their intrusion operations. Notably, we continue to observe a decline in the use of Cobalt Strike BEACON, and a corresponding increase in the use of legitimate remote access tools. In almost one third of incidents, ransomware was deployed within 48 hours of initial attacker access. Seventy-six percent (76%) of ransomware deployments took place outside of work hours, with the majority occurring in the early morning. Mandiant\'s recommendations to assist in addressing the threat posed by ransomware are captured in our Ransomware Protection and Containment Strategies: Practical Guidance for Hardening and Protecting Infrastructure, Identities and Endpoints white paper. Introduction Threat actors have remained driven to conduct ransomware operations due to their profitability, particularly in comparison to other types of cyber crime. Mandiant observed an increase in ransomware activity in 2023 compared to 2022, including a 75% increase in posts on data leak sites (DLS), and an over 20% increase in Mandiant-led investigations involving ransomware from 2022 to 2023 (Figure 1). These observations are consistent with other reporting, which shows a record-breaking more than $1 billion USD paid to ransomware attackers in 2023. This illustrates that the slight dip in extortion activity observed in 2022 was an anomaly, potentially due to factors such as the invasion of Ukraine and the leaked CONTI chats. The current resurgence in extortion activity is likely driven by various factors, including the resettling of the cyber criminal ecosystem following a tumultuous year in 2022, new entrants, and new partnerships and ransomware service offerings by actors previously associated with prolific groups that had been disrupted. This blog post provides an overview of the ransomware landscape and common tactics, techniques, and procedures (TTPs) directly observed by Mandiant in 2023 ransomware incidents. Our analysis of TTPs relies primarily on data from Mandiant incident response engagements and therefore represe |
Ransomware Data Breach Spam Malware Tool Vulnerability Threat Legislation Prediction Medical Cloud Commercial | ★★★ | |
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2024-04-23 12:00:00 | M-Trends 2024: Notre vue depuis les fronts M-Trends 2024: Our View from the Frontlines (lien direct) |
Attackers are taking greater strides to evade detection. This is one of the running themes in our latest release: M-Trends 2024. This edition of our annual report continues our tradition of providing relevant attacker and defender metrics, and insights into the latest attacker tactics, techniques and procedures, along with guidance and best practices on how organizations and defenders should be responding to threats.
This year\'s M-Trends report covers Mandiant Consulting investigations of targeted attack activity conducted between January 1, 2023 and December 31, 2023. During that time, many of our observations demonstrate a more concerted effort by attackers to evade detection, and remain undetected on systems for longer periods of time:
Increased targeting of edge devices, and platforms that traditionally lack endpoint detection and response solutions.
A more than 50% growth in zero-day usage over the same reporting period in 2022, both by espionage groups as well as financially-motivated attackers.
More “living off the land,” or use of legitimate, pre-installed tools and software within an environment.
Despite the increased focus on evasion by attackers, we are pleased to report that defenders are generally continuing to improve at detecting threats. Dwell time represents the period an attacker is on a system from compromise to detection, and in 2023 the global median dwell time is now 10 days, down from 16 days in 2022. While various factors (such as ransomware) help drive down dwell time, it\'s still a big win for defenders. We can\'t let up, however. Mandiant red teams need only five to seven days on average to achieve their objectives, so organizations must remain vigilant. Other M-Trends 2024 metrics include:
54% of organizations first learned of a compromise from an external source (down from 63% in 2022), while 46% first identified evidence of a compromise internally.
Our engagements most frequently occurred at financial services organizations (17.3%), business and professional services (13.3%), high tech (12.4%), retail and hospitality (8.6%), healthcare (8.1%), and government (8.1%).
The most common initial infection vectors were exploits (38%), phishing (17%), prior compromise (15%), and stolen credentials (10%).
Additional topics covered in detail in M-Trends 2024 include Chinese espionage operations targeting the visibility gap, the evolution of phishing amid shifting security controls, the use of adversary-in-the-middle to overcome multi-factor authentication, cloud intrusion trends, an |
Tool Vulnerability Threat Medical Cloud | ★★★★ |
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