The December 2013 issue of OUCH! is out, and I am pleased to be this month’s guest editor. The SANS Securing the Human team is impressive and it is always a pleasure to work with professionals with such diverse security backgrounds. If you aren’t familiar with OUCH!, it is a free Creative Commons resource intended to supplement user awareness training. OUCH! is translated into over 20 languages by a team of incredible volunteers. Pass it along to any loved ones getting a tablet computer this holiday season!
Tom from the c-APT-ure blog recently pointed me to the Malware Analysis Quant Research Project spearheaded by Securosis. The goal of the project is to develop a malware analysis model, complete with specific processes and metrics. The published white paper is 53 pages. Every organization has a malware problem and rapid identification and scoping is a big step towards successfully allocating precious security resources towards important events like attacks from determined adversaries as opposed to commodity worms and malware. The open nature of the model allows existing infrastructure within your organization to be readily integrated, shifting the focus towards identification and measurement of any process gaps. Those of you routinely hammered by ROI questions will applaud the focus on actionable metrics aimed at cost quantification.
SANS recently posted a webcast I recorded on memory forensics. While the presentation is from early 2012, the concepts are solid and this deck was eventually expanded to the full day of memory forensics training present in the updated Forensics 508 course.
Despite being written in 2006, Chris Ries’ paper Inside Windows Rootkits is still surprisingly relevant. About the only thing missing is a discussion of new(er) x64 mitigation techniques like Kernel Mode Code Signing and Kernel Patch Protection (aka PatchGuard). Few resources have explained rootkit internals so simply. As an example, Figure 2 from the paper neatly ties together the rootkit hooking universe:
The original PDF is a little hard to find these days, but here are a couple of links:
Memoryze 3.0 is out. It supports Windows 8 x86/x64 and Windows Server 2012. Output compatible with Redline. https://t.co/4y39MKD10v
— Jamie Butler (@jamierbutler) July 24, 2013
With Memoryze 3.0, the folks at Mandiant hit their mid-summer goal to roll out memory analysis support for Windows 8 (x86 and x64) and Server 2012 (x64). While support has not yet been rolled into Redline collector scripts, data collected by Memoryze can be loaded and analyzed in the Redline interface. This is no real surprise since Memoryze is the back-end collection and analysis tool that Redline relies upon.
You can dump Windows memory and process your memory image with the following commands (run MemoryDD.bat from a removable device and Process.bat on your forensic box): Continue Reading…
Microsoft Trustworthy Computing recently released several installments in their Targeted Attacks Video Series. While the short videos are largely low-tech, the accompanying documents provide detailed mitigation strategies. Mike Pilkington wrote an excellent review of the 282 page Best Practices for Securing Active Directory document on the SANS Forensics blog. The Mitigating Pass-the-Hash (PtH) Attacks and Other Credential Theft Techniques deck is also worth a read. Interestingly, Microsoft lists common mitigation techniques like “smart cards and multi-factor authentication” and “jump servers” as having only minimal effectiveness.
Like many of you, I have been watching the development of memory forensics over the last two years with a sense of awe. It is amazing how far the field has come since the day Chris Betz, George Garner and Robert-Jan Moral won the 2005 DFRWS forensics challenge. Of course, similar to other forensic niches, the majority of progress has been made on Windows memory forensics. There is good reason for this. Memory can be extremely fickle, with layouts and structures changing on a whim. As an example, the symbols file for Windows 7 SP1x86 is 330MB, largely due to it needing to support major changes that can occur in every service pack and patch. The fact that we have free tools such as Volatile Systems Volatility and Mandiant Redline supporting memory images of arbitrary size from (nearly) every modern version of Windows is nothing short of miraculous.
Nowhere is it more obvious how far the memory analysis field has come than looking at the recent innovations in Mac and Linux memory forensics. Examiners of these less popular platforms have had to sit patiently for years as Windows memory forensics moved from being feasible for OS internals experts to being approachable for the masses. Against all odds, Linux memory analysis has recently seen rapid innovations. If support for the various Windows versions came slowly, imagine the complexity posed by the myriad flavors of Linux and the long list of possible kernel versions. It turns out that the Volatility framework is particularly well suited to tackle this Hydra with its abstraction layers facilitating everything from different image formats to swappable OS profiles to rapid plugin development.