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Revue de presse francophone :
- Appaloosa AppDome nouent un partenariat pour accompagner les entreprises dans le déploiement et la protection des applications mobiles
- D-Link offre une avec un routeur VPN sans fil AC
- 19 mai Paris Petit-Déjeuner Coreye Développer son business à l'abri des cyberattaques
- POYNTING PRESENTE LA NOUVELLE ANTENNE OMNI-291, SPECIALE MILIEU MARITIME, CÔTIER ET MILIEU HUMIDE
- Flexera Software Les utilisateurs français de PC progressent dans l'application de correctifs logiciels, mais des défis de tailles subsistent
- Riverbed lance SD-WAN basé sur le cloud
- Fujitsu multi-récompensé VMware lui décerne plusieurs Partner Innovation Awards à l'occasion du Partner Leadership Summit
- Zscaler Private Access sécuriser l'accès à distance en supprimant les risques inhérents aux réseaux privés virtuels
- QNAP annonce la sortie de QTS 4.2.1
- Une enquête réalisée par la société de cyber sécurité F-Secure a décelé des milliers de vulnérabilités graves, potentiellement utilisables par des cyber criminels pour infiltrer l'infrastru
- Trouver le juste équilibre entre une infrastructure dédiée et cloud le dilemme de la distribution numérique
- 3 juin - Fleurance - Cybersécurité Territoires
- Cyber-assurances Seules 40 pourcents des entreprises françaises sont couvertes contre les violations de sécurité et les pertes de données
- Des étudiants de l'ESIEA inventent CheckMyHTTPS un logiciel qui vérifie que vos connexions WEB sécurisées ne sont pas interceptées
- Les produits OmniSwitch d'Alcatel-Lucent Enterprise ALE gagnent en sécurité pour lutter contre les cyber-attaques modernes

Dernier articles de SecuObs :
- DIP, solution de partage d'informations automatisée
- Sqreen, protection applicative intelligente de nouvelle génération
- Renaud Bidou (Deny All): "L'innovation dans le domaine des WAFs s'oriente vers plus de bon sens et d'intelligence, plus de flexibilité et plus d'ergonomie"
- Mises à jour en perspective pour le système Vigik
- Les russes ont-ils pwn le système AEGIS ?
- Le ministère de l'intérieur censure une conférence au Canada
- Saut d'air gap, audit de firmware et (in)sécurité mobile au programme de Cansecwest 2014
- GCHQ: Le JTRIG torpille Anonymous qui torpille le JTRIG (ou pas)
- #FIC2014: Entrée en territoire inconnu
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Revue de presse internationale :
- VEHICLE CYBERSECURITY DOT and Industry Have Efforts Under Way, but DOT Needs to Define Its Role in Responding to a Real-world Attack
- Demand letter served on poll body over disastrous Comeleak breach
- The Minimin Aims To Be The Simplest Theremin
- Hacking group PLATINUM used Windows own patching system against it
- Hacker With Victims in 100 Nations Gets 7 Years in Prison
- HPR2018 How to make Komboucha Tea
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- FBI Director Suggests iPhone Hacking Method May Remain Secret
- 2016 Hack Miami Conference May 13-15, 2016
- 8-bit Video Wall Made From 160 Gaming Keyboards
- In An Era Of Decline, News Sites Can t Afford Poor Web Performance
- BeautifulPeople.com experiences data breach 1m affected
- Swedish Air Space Infringed, Aircraft Not Required
- Why cybercriminals attack healthcare more than any other industry
- Setting the Benchmark in the Network Security Forensics Industry

Annuaire des videos
- FUZZING ON LINE PART THREE
- Official Maltego tutorial 5 Writing your own transforms
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- install zeus botnet
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- RT @fpalumbo: Cisco consistently leading the way ? buys vCider to boost its distributed cloud vision #CiscoONE
- @mckeay Looks odd... not much to go on (prob some slideshow/vid app under Linux)
- [SuggestedReading] Using the HTML5 Fullscreen API for Phishing Attacks
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- [Blog Spam] Metasploit and PowerShell payloads
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- @mikko @fslabs y'all wldn't happen to have lat/long data sets for other botnets, wld you? Doing some research (free/open info rls when done)
- RT @nickhacks: Want to crash a remote host running Snow Leopard? Just use: nmap -P0 -6 --script=targets-ipv6-multicast-mld #wishiwaskidding
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Top bi-hebdo de la revue Twitter
- RT @secureideas: I believe that all the XSS flaws announced are fixed in CVS. Will test again tomorrow if so, release 1.4.3. #BASESnort
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Working with Shadow Volumes

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Working with Shadow Volumes

Par Windows Incident Response
Le [2015-12-16] à 15:25:35



Présentation : I had an opportunity recently to do some interesting work with Volume Shadow Copies within an image acquired from a Windows 7 system. In this instance, I got some great information from a specific VSC, and I wanted to go back and do some testing. Through exchanges with David Cowen, I got access to some tools and decided to share my findings. Goal The goal of this analysis, after completing the analysis I originally intended to do with the image, was to see if the hibernation file hiberfil.sys existed as a previous version in a VSC. My original analysis involved creating a timeline in order to develop a detailed understanding of a malware infection associated with a targeted threat group. The system had been infected over a year ago, and at one point late this past summer, the AV had quarantined the malware and cleaned the persistence mechanisms. VSCs in FTK Imager During that initial analysis, I opened the image in FTK Imager, and at one point, I checked the System Volume Information folder and found that there were a number of difference files visible. At that point, I knew that the image contained VSCs, and by examining the modification dates for the files in FTK Imager, I had a good idea of when each had been created. I saw that there were one or two VSCs that had been created prior to the malware being quarantined, and I figured that I could extract specific data sources from that VSC in order to augment my timeline. I accessed the VSC of interest using the VHD method outlined here note this blog post contains the commands used . I still have a copy of vhdtool.exe seems to no longer be available, possible replacement linked here , so I used the convert option to change the .001 file to a VHD format this operation essentially adds a footer to the image file. In order to attach the VHD via the Disk Management utility on my Win10 analysis system, I had to change the file extension from .001 to .vhd the file still opens just fine in FTK Imager. Everything went fine using the vssadmin and mklink commands to access the VSC of interest, and I then added the resulting folder as an evidence item to FTK Imager choosing 'contents of a folder' . I was able to extract the files I wanted at the time, but I did not that this method did not provide me with the necessary access to extract files such as the MFT, etc. At the time, for the analysis I was doing, that was not an issue. The issue came up later when I mentioned to Jamie Levy that I had Windows 7 system with VSCs available, and that the hibernation file within the image itself was not a useful source of information about the malware, because the malware had been quarantined about a month prior the hibernation file being created. Jamie said she was curious to see through testing if the hibernation file was covered by VSCs that is, could I go back to the VSC of interest and retrieve extract a previous version of hiberfil.sys VSS Jimmy Weg has a good number of blog posts that address VSS Jimmy's done a lot of great work and shared it. In fact, I initially used information from his 13 Jul 2012 blog post entitled Mounting Shadow Volumes to mount the VSC of interest as a RAM disk on my analysis system. At the time that I did this, I was simply interested in collecting a copy of the MFT, which is why I was pursing it...at the time, I wasn't interested in comparing hibernation files. After attaching the VHD and running the vssadmin command to enumerate VSCs from the newly-attached volume, I used the following command D Toolsvss x GLOBALROOT Device HarddiskVolumeShadowCopy16 This resulted in a RAM disk being added to my analysis system. I didn't see it in Explorer, nor in the Disk Management utility, but I could add it as a logical volume to FTK Imager. Removing the drive was easy D Toolsvss x Drive X removed If you're interested in mounting multiple VSCs sequentially, take a look at Jimmy's blog posts and consider using Dan Mare's vss.exe. Libvshadow While chatting with David, he mentioned that the method used to access VSCs may have an effect on what I was seeing, or what I could access, and he suggested that I take a look at using libvshadow to access the VSCs. Step 1 Get the tools..look for ...windows compiled version of libvshadow... Step 2 Install Dokan I went with v.0.7.4, as David mentioned via chat that 0.7.something was the latest stable release Step 3 Run mmls to get the sector offset to the partition of interest mmls -i raw -t dos z image.vhd This gave me a sector offset of 0000002048 to the partition. Step 4 Run vshadowinfo not really necessary I'm including this step for completeness...vshadowinfo and vshadowmount require byte offsets, and 2048 x 512 1048576, so we will use 1048576 to designate the byte offset to the partition we're interested in vshadowinfo -o 1048576 z image.vhd Step 5 Run vshadowmount vshadowmount -o 1048576 -X allow_other z image.vhd x X volume contents The result of running this command is that I now had an X volume on my system i.e., X is the mount point added via the vshadowmount command line , with the contents of the volume illustrated in the figure to the right. Note After hitting enter following the above command line, the command prompt did not return this is normal. Don't do anything...don't hit ctrl-C and do not close the command prompt. You can minimize it, but do not forget that it's there. Step 6 Access VSS1 using FTK Imager I opened FTK Imager and added VSS1 as an image file. It parsed and opened a little slower than a normal image would the image itself is on a USB drive, and the VSC had to be parsed... . However, I now have access to the VSC as a raw dd image. This VSC was created on 13 July 2015, and I can not only extract files that were quarantined on 13 Aug 2015, but I can also extract a previous version of the MFT and other system files. I can even mount the contents of the VSC by choosing File-Image Mounting... via FTK Imager. If you left the command prompt up in the background, you'll see stuff scrolling by...when you're done doing what you want to do with the VSC and have closed FTK Imager, or just removed the evidence item, bring the command prompt into focus and hit Ctrl-C the prompt will return, and you'll no longer have an X volume on your system. Testing I opted to use libvshadow to access the VSC and extract hiberfil.sys. I did that, and use Volatility to convert the file to a raw memory dump, and then ran the imageinfo command even though the VSC that I'd extracted the file from had been created on 13 July 2015, the output of the imageinfo command said that the file had been created on 13 Sept 2015. I then hashed both hiberfil.sys files and got the exact same hash. As such, using this method it appears that the hibernation file is not tracked or affected by the Volume Shadow Service that is, you don't get previous versions of the file. If you perform your own testing and find something different, I'd greatly appreciate knowing the process and tools you used. Other Take-Aways The research, testing, and most importantly, interaction with other analysts really demonstrates that there a number of methods available for accessing historical information on Windows systems that do not require dongles, and do not require the purchase of commercial applications. Also, you don't need to know Linux, or how to install and compile libraries. Using native Windows tools, you can access the contents of a VSC as you would any other folder, but with a couple of freely available tools, you can get even deeper access, to the point of accessing the MFT within the shadow volume. During my initial analysis prior to the testing outlined here , I extracted a couple of specific files from the VSC and created a mini-timeline in order to add context to my original timeline, and develop a clearer picture. And it all took just a couple of minutes. And it doesn't end there. David Cowen's been producing a series of blog posts on automating DFIR work, and he has a blog post that walks you through accessing VSCs within an acquired image programmatically, via Python. The final Python script that David makes available essentially accesses each VSC, searches across it for specific files, and collects information about those files. Resources VhdxTool - possible replacement to vhdtool Note I have not tried this tool




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