Linux Digital Forensics Web Resources

Below is a list of digital forensics resources for linux. I especially enjoyed reading LUIS ROCHA‘s intro guide to Linux Forensics (#19).

  1. VirusTotal – Free Online Virus, Malware and URL Scanner
  2. TSK Tool Overview – SleuthKitWiki
  3. The Sleuth Kit
  4. Taking advantage of Ext3 journaling file system in a forensic investigation
  5. SANS Digital Forensics and Incident Response Blog – Understanding EXT4 (Part 1)- Extents – SANS Institute
  6. SANS Digital Forensics and Incident Response Blog – Understanding EXT4 (Part 2)- Timestamps – SANS Institute
  7. SANS Digital Forensics and Incident Response Blog – Understanding EXT4 (Part 3)- Extent Trees – SANS Institute
  8. SANS Digital Forensics and Incident Response Blog – Understanding EXT4 (Part 4)- Demolition Derby – SANS Institute
  9. SANS Digital Forensics and Incident Response Blog – Understanding EXT4 (Part 5)- Large Extents – SANS Institute
  10. SANS Digital Forensics and Incident Response Blog – How To – Digital Forensics Copying A VMware VMDK – SANS Institute
  11. SANS Digital Forensics and Incident Response Blog – Blog – SANS Institute
  12. qemu-img(1)- QEMU disk image utility – Linux man page
  13. qemu-img for WIndows – Cloudbase Solutions
  14. National Software Reference Library (NSRL) – NIST
  15. ltrace – Wikipedia
  16. Logical Volume Manager (204.3)
  17. Linux-Unix and Computer Security Resources – Hal Pomeranz – Deer Run Associates
  18. The Law Enforcement and Forensic Examiner’s Introduction to Linux
  19. Intro to Linux Forensics – Count Upon Security
  20. https—www.kernel.org-doc-Documentation-filesystems-ext4.txt
  21. GitHub – log2timeline-plaso- Super timeline all the things
  22. Filesystem Hierarchy Standard
  23. Digital Forensics – SuperTimeline & Event Logs – Part I – Count Upon Security
  24. Digital Forensics – NTFS Metadata Timeline Creation – Count Upon Security
  25. Digital Forensics – Evidence Acquisition and EWF Mounting – Count Upon Security
  26. chkrootkit — locally checks for signs of a rootkit

Hits: 428

Cannot connect to Server 2008 R2 with RDP broken – Interactive Logon Initialization Process has Failed

ESXi 5.5 – recently I tried to RDP into my Server 2008 R2 machine without success. Looking at the console, I get the message: ” Interactive logon process initialization has failed. Please consult the event log for more details. ” My first reboot of the machine did an automatic check disk. I can no longer log into the machine either via RDP or on the console. I’d like to not have to rebuild this system as it is my only stand-alone DC in my home lab. I’m going to bring up a separate DC, then do a DCPROMO, however, below are the steps I took to resolve the issue, albeit unsuccessfully – some of these steps may work for you. I was hoping I could mark this process as “Solved” but I haven’t gotten there yet…

Event log says:

  • Event 4005 Winlogon – The windows logon process has unexpectedly quit
  • Event 33 SideBySide – Activation context generation failed for “C:\Windows\system32\LogonUI.exe”. Dependent Assembly Microsoft.Windows.Common-controls.Resources,language=”*”,processorArchitecture=”amd64″,publicKeyToken=”6595b64144ccf1df”,type=”win32,version=”6.0.0.0″ could not be found. Please use sxstrace.exe for detailed diagnosis.

These errors all seem to have started on 8/8/16 when the following events occurred:

Error: 36888 – Schannel – The following fatal alert was generated: 10. The internal error state is 1203

Event 56 – The terminal Server security layer detected an error in the protocol stream and has disconnected the client. Client IP: 223.x.x.x which is a Hong Kong IP. Prior to that are many Event 1012 – Remote session from client name a exceeded the maximum allowed failed logon attempts. The session was forcibly terminated.

I pulled the machine off the internet and the network in case it’s been compromised. On second thought I should probably kill this machine with fire!

Things I have tried that did not resolve the problem:

  • Boot into safe mode
  • Edited RDP settings on my workstation to use less resolution and video bit depth
  • Increased Virtual Machine’s system memory size as suggested, went from 3GB to 7GB
  • Booted to SystemRescueCD and replaced c:\windows\system32\LogonUI.exe – did this by booting the VM to a SystemRescueCD.iso (startx) and then mount the NTFS file system with the instructions here. Next I changed the root password with passwd and then connected to the VM with Filezilla on port 22 and renamed/moved the files.
  • Hotfix 437977 – Windows6.1-KB2615701-v2-x64.msu – because I cannot get into the system to run this, I started Task Scheduler on the remote server from my workstation, and attempted to have the .msu run but get error: the application has failed to start because its side-by-side config is incorrect.
  • Booted the VM to a Server2008R2.iso, Repair your Computer > command prompt,
    sfc /scannow /offbootdir=c:\ /offwindir=c:\windows

    didn’t work. Then tried command prompt > “cd sources” > StartRep.exe didn’t help.

Any suggestions? Has anyone gotten past this error? I can still connect to the machine via any means (mmc terminals such as event viewer, and task scheduler) other than a GUI console.

Edit: I gave up on trying to fix the issue – this is the reason we backup our VM’s and in this case I’m glad I had a good working backup. If you find a way to resolve, please drop a note – otherwise, make sure you have good backups of your DC’s: The VM as a bare metal backup and the System State (Separately.)

Hits: 387

ESXi 5.1 – Setting up an Ubuntu Server as a SAMBA Domain Controller

If you want to run a domain controller on your network but don’t have access to a Windows Server license, you can use SAMBA, the free open-source software, and VirtualBox, the free virtualization software. We’ll describe the procedure for setting up a virtual server using VirtualBox and netboot.xyz iPXE and move on to setting up your domain controller with SAMBA.

Read more here:

https://4sysops.com/archives/set-up-ubuntu-as-a-domain-controller-with-samba-on-virtualbox/

Hits: 980