Showing posts from January, 2009

Registry Code Updates

I've found a couple bugs in the registry code I released recently, and at least one is significant enough that a new release is warranted. Teach me to release code I wrote in a couple hours on a plane ;) The list of fixes is: Fix a bug that prevented any volatile subkeys from appearing when using the subkeys() function. Add a check for None when using lsadump (reported by Paul Bobby, thanks!) Add appropriate license statements at the top of each file (thanks AAron!). For the record, the license is the GNU General Public License (GPL). You can download the new version as a zip or tarball , and install it exactly as the previous version, by extracting it into your Volatility directory. If you have a previous version installed, this should just overwrite it (though you may have to tell your unzip program that's okay). As before, PyCrypto is required for the credential extraction modules. One final note: I have seen some crashes when people attempt to use the hash extraction code

Memory Registry Tools!

Hi everyone! I know it's a bit late, but I made you all a Christmas present: tools for accessing registry data in Windows memory dumps. This the work that I presented at DFRWS 2008 ; it took a while to release because I had to find time to port it to Volatility 1.3. To use them, grab either the zip or the tarball and extract it to your Volatility directory. You'll get the following new plugins (along with some supporting files): hivescan : finds the physical address of CMHIVE structures, which represent a registry hives in memory hivelist : takes a physical address of one CMHIVE, returns the virtual address of all hives, and their names printkey : takes a virtual address of a hive and a key name (e.g., 'ControlSet001\Control'), and display the key's timestamp, values and subkeys hashdump : dump the LanMan and NT hashes from the registry (deobfuscated). See this post for more details on how this is accomplished. lsadump : dump the LSA secrets (decrypted) from the

Plugin Post: Moddump

By now, you all probably know that you can dump running programs from memory using the procdump module in Volatility. But not all malware runs as a user-mode process. What about malicious kernel modules? As it turns out, dumping these is also quite straightforward, and it's easy to write a plugin to do it. In fact, it's downright trivial -- kernel modules are just PE files mapped into kernel memory (in exactly the same way as normal programs are PE files mapped into user memory). So to dump a particular kernel module, we can use Volatility's built-in PE dumper (the source is in forensics/win32/ , and point it at the memory address of a kernel module. Naturally, I've made a plugin that implements this: grab and put it in your memory_plugins directory, and you'll be good to go. Here's what it looks like in action: $ python volatility moddump --help Usage: moddump [options] (see --help) Options: -h, --help show this help mes