@night 1803 access accessdata active directory admissibility ads aduc aim aix ajax alissa torres amcache analysis anjp anssi answer key antiforensics apfs appcompat appcompatflags applocker april fools argparse arman gungor arsenal artifact extractor attachments attacker tools austin automating automation awards aws azure azuread back to basics backstage base16 best finds beta bias bitcoin bitlocker blackbag blackberry enterprise server blackhat blacklight blade blanche lagny book book review brute force bsides bulk extractor c2 carved carving case ccdc cd burning ceic cfp challenge champlain chat logs Christmas Christmas eve chrome cit client info cloud forensics command line computer forensics computername conference schedule consulting contest cool tools. tips copy and paste coreanalytics cortana court approved credentials cryptocurrency ctf cti summit cut and paste cyberbox Daily Blog dbir deep freeze defcon defender ata deviceclasses dfa dfir dfir automation dfir exposed dfir in 120 seconds dfir indepth dfir review dfir summit dfir wizard dfrws dfvfs dingo stole my baby directories directory dirty file system disablelastaccess discount download dropbox dvd burning e01 elastic search elcomsoft elevated email recovery email searching emdmgmt Encyclopedia Forensica enfuse eric huber es eshandler esxi evalexperience event log event logs evidence execution exfat ext3 ext4 extended mapi external drives f-response factory access mode false positive fat fde firefox for408 for498 for500 for526 for668 forenisc toolkit forensic 4cast forensic lunch forensic soundness forensic tips fraud free fsutil ftk ftk 2 full disk encryption future gcfe gcp github go bag golden ticket google gsuite guardduty gui hackthebox hal pomeranz hashlib hfs honeypot honeypots how does it work how i use it how to howto IE10 imaging incident response indepth information theft infosec pro guide intern internetusername Interview ios ip theft iphone ir itunes encrypted backups jailbreak jeddah jessica hyde joe sylve journals json jump lists kali kape kevin stokes kibana knowledgec korman labs lance mueller last access last logon leanpub libtsk libvshadow linux linux-3g live systems lnk files log analysis log2timeline login logs london love notes lznt1 mac mac_apt macmini magnet magnet user summit mathias fuchs md viewer memorial day memory forensics metaspike mft mftecmd mhn microsoft milestones mimikatz missing features mlocate mobile devices mojave mount mtp multiboot usb mus mus 2019 mus2019 nccdc netanalysis netbios netflow new book new years eve new years resolutions nominations nosql notifications ntfs ntfsdisablelastaccessupdate nuc nw3c objectid offensive forensics office office 2016 office 365 oleg skilkin osx outlook outlook web access owa packetsled paladin path specification pdf perl persistence pfic plists posix powerforensics powerpoint powershell prefetch psexec py2exe pyewf pyinstaller python pytsk rallysecurity raw images rdp re-c re-creation testing reader project recipes recon recursive hashing recycle bin redteam regipy registry registry explorer registry recon regripper remote research reverse engineering rhel rootless runas sample images san diego SANS sans dfir summit saturday Saturday reading sbe sccm scrap files search server 2008 server 2008 r2 server 2012 server 2019 setmace setupapi sha1 shadowkit shadows shell items shellbags shimcache silv3rhorn skull canyon skype slow down smb solution solution saturday sop speed sponsors sqlite srum ssd stage 1 stories storport sunday funday swgde syscache system t2 takeout telemetry temporary files test kitchen thanksgiving threat intel timeline times timestamps timestomp timezone tool tool testing training transaction logs triage triforce truecrypt tsk tun naung tutorial typed paths typedpaths uac unc understanding unicorn unified logs unread updates usb usb detective usbstor user assist userassist usnjrnl validation vhd video video blog videopost vlive vmug vmware volatility vote vss web2.0 webcast webinar webmail weekend reading what are you missing what did they take what don't we know What I wish I knew whitfield windows windows 10 windows 2008 windows 7 windows forensics windows server winfe winfe lite wmi write head xboot xfs xways yarp yogesh zimmerman zone.identifier

Daily Blog #114: Solving Sunday Funday 10/13/13 - Timeline intersection

Hello Reader,
           It was an interesting contest this Sunday in that we had so few responses. To those of you who watched our forensic lunch on Friday we did talk about strategies for tracking lateral movement, we just didn't get into Linux specifically. Today we are going to talk about how I would approach stitching together lateral movement based on the netflow data we have. For those not familiar with Netflow and how it works/what it can do you might want to start here.

The key to this challenge is the availability of netflow and the fact that the systems here are on the DMZ. Since we started the scenario with the knowledge of the attackers source country, this is your first pivot point and what I would do at this point is the following:

1. Load the netflow data into a datbase
2. Pull out the distinct times in days/hours where your attacker was active based on his initially detected ip
3. Determine which hosts that ip has accessed
4. Go to each of those hosts and create a timeline from the logs stored within them, this is one advantage of Linux of Windows as Linux tends by default to log more events by default.
5. Look then at the netflow data from all traffic originating from the dmz hosts identified in step 3 and find all the traffic within the network that they originated on the times identified in step 2
6. Access those hosts identified in step 5 and pull a timeline of those logs

Your next step will be to limit your timeline to those days and times identified in step 2. You want to review those systems and determine if there a reason to believe that they have been used for lateral movement as well, in which case repeat step 5 for each host where you believe this is possible.

This intersection of host based and netflow diagrams for time periods will allow you to slice and dice your timeline data from the hosts to focus on those periods of activity you most need to focus on in order to determine what the attacker was up to and their capabilities.

Tomorrow let's talk about host artifacts to inspect.

Post a Comment

[blogger][disqus][facebook][spotim]

Author Name

Contact Form

Name

Email *

Message *

Powered by Blogger.