Operation Exchange Marauder: Active Exploitation of Multiple Zero-Day Microsoft Exchange Vulnerabilities
Por um escritor misterioso
Last updated 07 julho 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 […]
Operation Exchange Marauder: Active Exploitation of Multiple Zero-Day Microsoft Exchange Vulnerabilities
Tactics, Techniques, and Procedures (TTPs) Used by HAFNIUM to Target Microsoft Exchange Servers
Tracking Microsoft Exchange Zero-Day ProxyLogon and HAFNIUM - Truesec
Microsoft Exchange exploitation: how to detect, mitigate, and stay calm
Flash Notice: Zero-Day Vulnerability in Libwebp - Exploited in the Wild
List of All CVEs and IOCs Used by HAFNIUM to Target Microsoft Exchange Servers, Cyware
Zero-day vulnerabilities in Microsoft Exchange Server
Detecting Microsoft Exchange Vulnerabilities - 0 + 8 Days Later…
Threat Advisory: HAFNIUM and Microsoft Exchange zero-day
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