Operation Exchange Marauder: Active Exploitation of Multiple Zero-Day Microsoft Exchange Vulnerabilities
Por um escritor misterioso
Last updated 20 outubro 2024
[UPDATE] March 8, 2021 – Since original publication of this blog, Volexity has now observed that cyber espionage operations using the SSRF vulnerability CVE-2021-26855 started occurring on January 3, 2021, three days earlier than initially posted. Volexity is seeing active in-the-wild exploitation of multiple Microsoft Exchange vulnerabilities used to steal e-mail and compromise networks. These attacks appear to have started as early as January 6, 2021. In January 2021, through its Network Security Monitoring service, Volexity detected anomalous activity from two of its customers' Microsoft Exchange servers. Volexity identified a large amount of data being sent to IP addresses it believed were not tied to legitimate users. A closer inspection of the IIS logs from the Exchange servers revealed rather alarming results. The logs showed inbound POST requests to valid files associated with images, JavaScript, cascading style sheets, and fonts used by Outlook Web Access (OWA). It was initially suspected the […]
Busted by XDR: Detecting Microsoft Exchange Post-Exploit Activity in February - Palo Alto Networks Blog
Defending Exchange servers under attack
Attackers Exploit New Zero-Day ProxyNotShell Vulnerabilities on Exchange Server
Microsoft Exchange Server Attack Timeline: Discoveries and Mitigations
ProxyNotShell: A Zero-Day Microsoft Exchange Exploit
Operation Exchange Marauder - SOC Prime
Microsoft Exchange exploitation: how to detect, mitigate, and stay calm
Josh Grunzweig (@jgrunzweig) / X
Threat Assessment: Active Exploitation of Four Zero-Day Vulnerabilities in Microsoft Exchange Server
Operation Exchange Marauder: Active Exploitation of Multiple Zero-Day Microsoft Exchange Vulnerabilities
Microsoft Exchange exploitation: how to detect, mitigate, and stay calm
Tactics, Techniques, and Procedures (TTPs) Used by HAFNIUM to Target Microsoft Exchange Servers
Hunting down Microsoft Exchange 0-day
Exchange servers under siege from at least 10 APT groups
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