![]() ![]() (I am not affiliated, associated, authorized, endorsed by, or in any way officially connected with this solution)Īn excellent compilation of events since the discovery of this vulnerability. A very interesting analysis of attacking behavior based on log entries and W3WP memory dumps.Downloads and installs the IIS URL rewrite tool. On March 2, Microsoft reported that a Chinese APT group known as Hafnium exploited the four zero-day vulnerabilities to attack on-premises versions of its Exchange email servers. Checks if your server is vulnerable based on the presence of the SU patch or Exchange version. (In German)įrank Carius always produces great content, this time is sharing a very complete review of the vulnerability, also with a recommended workflow to follow. 'Please patch and run Microsofts MSERT tool to clean up any webshells,' Kryptos Logic wrote on Twitter. This tool was updated to detect web shells that could have been left by attackers, not enough, but a must-run tool. Not only contains a script that you must execute to understand if your Exchange logs show suspicious entries (Suspicious activity found in % log!), EVEN IF YOU APPLIED THE PATCHES, but also a mitigation script to apply if for some reason you are unable to install the Security Patches. Download Microsoft Safety Scanner (32-bit) Download Microsoft Safety Scanner (64-bit) Note Safety Scanner is exclusively SHA-2 signed. Simply download it and run a scan to find malware and try to reverse changes made by identified threats. Script to check if your Exchange has been compromised Microsoft Safety Scanner is a scan tool designed to find and remove malware from Windows computers.Probably the official entry point to understand the exploit and should be the initial procedure to take against this vulnerability. ![]() Some days had passed since the public Microsoft announcement about this HAFNIUM exploit and as I have been asked to step to help several customers I would like to list all the resources I used to work on this matter, I will try to update this list with new content as it is being generated. Type the following command to execute a full scan quietly and press Enter: msert /f /q. ![]()
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