UPX Packed Headaches

Researching malware has many challenges. One of those challenges is obfuscated code and intentionally corrupted binaries. To address challenges like this, we've written a small tool in C that could fix intentionally corrupted binaries automatically. We also plan to open-source the project so othe...

Azure Security Lab: a new space for Azure research and collaboration

Azure is exceptionally secure. To help keep it that way, we are doubling the top bounty reward for Azure vulnerabilities to $40,000. But we aren’t stopping there. To make it easier for security researchers to confidently and aggressively test Azure, we are inviting a select group of talented...

Inside the MSRC– The Monthly Security Update Releases

For the second in this series of blog entries we want to look into which vulnerability reports make it into the monthly release cadence. It may help to start with some history. In September 2003 we made a change from a release anytime approach to a mostly predictable, monthly release cadence...

Revoke-Obfuscation: PowerShell Obfuscation Detection Using Science

Many attackers continue to leverage PowerShell as a part of their malware ecosystem, mostly delivered and executed by malicious binaries and documents. Of malware that uses PowerShell, the most prevalent use is the garden-variety stager: an executable or document macro that launches PowerShell to...

Yahoo India R&D to Host 'HACK U' for IIT Kharagpur Students !

Yahoo! India R&D will be hosting 'HACK U'– the University Hack Day event for IIT Kharagpur students on campus between 17 and 20 March. Close to 250 students are expected to participate in this four day event of learning, hacking and fun, which is part of Yahoo!'s on-going commitment to nurture...