Rapid7 Blog

Windows  

Petya-like Ransomware Explained

TL;DR summary (7:40 PM EDT June 28): A major ransomware attack started in Ukraine yesterday and has spread around the world. The ransomware, which was initially thought to be a modified Petya variant, encrypts files on infected machines and uses multiple mechanisms to…

Wanna Decryptor (WNCRY) Ransomware Explained

Mark the date: May 12, 2017. This is the day the “ransomworm” dubbed “WannaCry” / “Wannacrypt” burst — literally — onto the scene with one of the initial targets being the British National Health Service. According to The Guardian: the “unprecedented attack… affected 12 countries and at least…

Attacking Microsoft Office - OpenOffice with Metasploit Macro Exploits

It is fair to say that Microsoft Office and OpenOffice are some of the most popular applications in the world. We use them for writing papers, making slides for presentations, analyzing sales or financial data, and more. This software is so important to businesses that,…

CVE-2017-3823: Remote Code Execution Vulnerability in Cisco WebEx Browser Plugin

On January 21st 2017, Google's Project Zero disclosed a vulnerability in Cisco's WebEx browser plugin extension that could allow attackers to perform a remote code execution (RCE) exploit on any Windows host running the plugin. An initial fix was pushed out by Cisco that warned…

The Twelve Pains of Infosec

One of my favorite Christmas carols is the 12 Days of Christmas. Back in the 90's, a satire of the song came out in the form of the 12 Pains of Christmas, which had me rolling on the floor in laughter, and still does. Now…

Pentesting in the Real World: Local File Inclusion with Windows Server Files

This is the 5th in a series of blog topics by penetration testers, for penetration testers, highlighting some of the advanced pentesting techniques they'll be teaching in our new Network Assault and Application Assault certifications, opening for registration this week. For more information, check out…

Revoking and Pinning Certificate Authorities in Windows

Situations come up relatively frequently where a specific certificate authority, trusted by browsers and operating systems, acts in a way that the users of those products would consider untrustworthy.In the enterprise, with services exposed to the Internet and employees traveling, working from Wi-Fi and…

Nexpose Remote Registry Activation for Windows

The Windows Registry is a database which stores all settings for a Windows system, e.g. hardware, software installed, Windows updates installed and preferences for users and their applications.  During normal day to day use a standard user will inadvertently push changes into this database…

Metasploit Framework Open Source Installers

Rapid7 has long supplied universal Metasploit installers for Linux and Windows. These installers contain both the open source Metasploit Framework as well as commercial extensions, which include a graphical user interface, metamodules, wizards, social engineering tools and integration with other Rapid7 tools. While these features…

Flipping bits in the Windows Kernel

Recently, the MS15-061 bulletin has received some attention. This security bulletin includes patches for several Windows Kernel vulnerabilities, mainly related to win32k.sys. Details of one of them, discovered by Udi Yavo, have been very well covered. First, the same Udi Yavo published details about…

From Windows to Office 365: Detecting Intruder Behavior in Microsoft Infrastructures

Microsoft infrastructures have traditionally been on-premise. This is about to change as Microsoft is getting incredible traction with Office 365 deployments. As the corporate infrastructure is changing, many security professionals are concerned about security and transparency of their new strategic cloud services and need to…

Microsoft Attack Surface Analyzer (ASA): It's for defenders too!

Attack Surface Analyzer, a tool made by Microsoft and recommended in their Security Development Lifecycle Design Phase, is meant primarily for software developers to understand the additional attack surface their products add to Windows systems. As defenders, this tool can be very useful. The tool…

A debugging session in the kernel

Last week, an awesome paper about the MS15-078 vulnerability and it's exploitation was published by Cedric Halbronn. This vulnerability, originally found and exploited by Eugene Ching, already has a work-in-progress module in Metasploit, which you can follow on github. I recommend checking all the materials…

Revisiting an Info Leak

Today an interesting tweet from Greg Linares (who has been posting awesome analysis on twitter lately!) came to our attention, concerning the MS15-080 patch: This patch (included in MS15-080) may have been intended stop one of the Window kernel bugs exploited by Hacking Team. But,…

Update Tuesday, August 2015

This month's update includes 14 Microsoft security bulletins (52 CVEs), with three being rated as critical. One of these vulnerabilities has already affected MS office (MS15-081) and has been detected as being exploited in the wild. As per the norm, Adobe has also released a…

Featured Research

National Exposure Index 2017

The National Exposure Index is an exploration of data derived from Project Sonar, Rapid7's security research project that gains insights into global exposure to common vulnerabilities through internet-wide surveys.

Learn More

Toolkit

Make Your SIEM Project a Success with Rapid7

In this toolkit, get access to Gartner's report “Overcoming Common Causes for SIEM Solution Deployment Failures,” which details why organizations are struggling to unify their data and find answers from it. Also get the Rapid7 companion guide with helpful recommendations on approaching your SIEM needs.

Download Now

Podcast

Security Nation

Security Nation is a podcast dedicated to covering all things infosec – from what's making headlines to practical tips for organizations looking to improve their own security programs. Host Kyle Flaherty has been knee–deep in the security sector for nearly two decades. At Rapid7 he leads a solutions-focused team with the mission of helping security professionals do their jobs.

Listen Now