Ransomware Gangs Exploit Microsoft Teams to Breach Corporate Systems
Cybercriminals are leveraging advanced tactics to infiltrate corporate systems, with prominent ransomware groups like Black Basta and FIN7-linked actors exploiting Microsoft Teams' default configurations. The assaults commence with extensive email campaigns, fostering urgency and confusion.
Impersonating IT support via Microsoft Teams calls, attackers capitalize on the default setting that permits communication with external domains. They persuade victims to grant remote access and deploy malicious payloads, such as Java archives and Python scripts, to compromise the system. Credential harvesting, keystroke logging, and lateral network movement are common strategies employed to secure further access and control. Attackers blend legitimate software with malicious code, including side-loading malware and penetration testing tools.
To mitigate these risks, organizations should limit external communication in Microsoft Teams, disable Quick Assist on critical systems, enhance employee training, implement advanced security protocols, and monitor unusual activity. Businesses are urged to stay vigilant as ransomware gangs continually refine their methods and exploit software vulnerabilities.
Prominent ransomware groups are exploiting Microsoft Teams' default configurations and employing sophisticated tactics to breach corporate systems. Businesses must fortify their cybersecurity measures, including restricting external communication in Microsoft Teams and enhancing employee training, to safeguard against these evolving threats.
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