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"Wanna" ransomware outbreak. Please see this Sophos article sophos.com/kb/126733 for advice on how to protect your organization. Immediate action recommended.
When running the Setup.exe file you see the error:
Failed to copy CRT directory to local machine. If you do not click 'OK', this message box will close automatically after 60 seconds.
In the Sophos ES Setup.log file you see:
[DATE] [TIME] PM,ERROR,Failed to copy CRT directory to local machine,
First seen in Sophos Anti-Virus for Windows 2000+
Check the endpoint computer's environmental variable for both temp and tmp. Confirm they are correct and/or compare with the settings of a working computer. For further information see Microsoft documentation.
Also check the security permissions on the crt folder (right-click on the crt folder | Properties | Security | Advanced | Change Permissions). By default the 'Include inheritable permissions from this object's parent' should be checked.
Note: To locate the crt folder see article 117835.
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