Security Advisory: Enhancing Cybersecurity Vigilance During Natural Disasters
Following a recent advisory from the Cybersecurity and Infrastructure Security Agency (CISA) regarding the increased cyber threats during Hurricane Helene, it’s crucial for organizations to reassess their disaster preparedness from a cybersecurity perspective. Effective disaster preparedness is about anticipating potential challenges and equipping your organization with the tools and plans to manage them effectively. Natural disasters not only disrupt physical infrastructures but also create ripe conditions for cybercriminals to exploit heightened vulnerabilities.
Threat Hunt of the Month: Quad7 Botnet and Password Spraying Tactics Threaten Microsoft 365 Accounts
In November 2024, GoSecure Threat Hunters have identified an alarming rise in the activity of the Quad7 botnet, a sophisticated network of compromised nodes employed by cybercriminals to perform password spraying attacks on Microsoft 365 accounts. This method strategically avoids common detection methods such as account lockouts by using widely used passwords against a long list of valid users over an extended period.
Large-Scale Spear-Phishing Campaign with Malicious RDP Attachments
In response to a recent report from the Cybersecurity and Infrastructure Security Agency (CISA) on a large-scale spear-phishing campaign, GoSecure is alerting organizations to emerging threats involving malicious Remote Desktop Protocol (RDP) files. The campaign, reportedly orchestrated by a foreign threat actor targeting critical sectors like government and IT, seeks to exploit unsuspecting users through RDP attachments in emails that mimic trusted entities.
Threat Hunt of the Month: Sophisticated Phishing Campaigns Leveraging Web Session Cookie Theft
In October 2024, GoSecure Threat Hunters have uncovered a sophisticated phishing campaign that utilizes tactics like Attacker-in-the-Middle (AitM) and phishing to compromise user accounts through web session cookie theft. This specific method targets cloud-based file hosting applications such as Dropbox and OneDrive, compromising users by manipulating shared files and redirecting them to malicious sites where both credentials and multi-factor authentication details are stolen.
Threat Hunt of the Month: CVE-2024-37085 Vulnerability in VMware ESXi Hypervisors – Privilege Escalation and Ransomware Risks
In September 2024, GoSecure Threat Hunters selected a critical vulnerability, CVE-2024-37085, affecting VMware ESXi hypervisors. This vulnerability, which allows for privilege escalation, could give attackers administrative access to ESXi hosts. Such access could lead to ransomware deployment, data theft, and control over key assets within virtual environments.
