"Cannot open the file because the file format or extension is invalid" opening Office files

UPDATE: Upon further analysis of the files that have been submitted to us for investigation, the analysts have determined that the files are encrypted with a private and public key. Unless the private key is available, the files will not be able to be recovered. The private key is more than likely held by the attacker.The…

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Office 2013 VBA component stops functioning

We are seeing a few cases where the VBA component of the Office 2013 apps stop functioning.  The applications are working properly when installed.  Then a few days later VBA buttons no longer work.  Here are the scenarios that wehave seen: Word The Macro button is not greyed out but when trying to run or…

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