Digital Forensics

Challenge Name Challenge link Type Lazaretto ✔ Download Forensics Hotel ✔ Download Forensics Subscription Download Forensics Geology docker pull cyctf/geology Forensics imPOSTer ✔ Download Forensics Mach ✔ Download Mobile Lazaretto Challege Description Writeup we were provided with an ad1 file using FTKimager we were able to open it and it had only windows event logs So i just dumped the files and using the famous ericzimmerman tool EvtxECmd i was able to pares the full events into a csv file using this command...

Description This Ubuntu Linux honeypot was put online in Azure in early October to watch what happens with those exploiting CVE-2021-41773. Initially, there was a large number of crypto miners that hit the system. You will see one cron script meant to remove files named kinsing in /tmp. This was a way of preventing these miners so more interesting things could occur. Challenge Files: sdb.vhd.gz VHD of the main drive obtained through an Azure disk snapshot ubuntu....

Description A Linux server was possibly compromised and a forensic analysis is required in order to understand what really happened. Hard disk dumps and memory snapshots of the machine are provided in order to solve the challenge. Challenge Files: victoria-v8.kcore.img: memory dump done by dd’ing /proc/kcore. victoria-v8.memdump.img: memory dump done with memdump. Debian5_26.zip: volatility custom Linux profile. Challenge Link : https://cyberdefenders.org/labs/41 Supportive Tools: Volatilty 2.6 FTK imger HxD Writeup Q1 The attacker was performing a Brute Force attack....

Ryuk is a ransomware which encrypts its victim’s files and asks for a ransom via bitcoin to release the original files. It is has been observed being used to attack companies or professional environments. Cybersecurity experts figured out that Ryuk and Hermes ransomware shares pieces of codes. Hermes is commodity ransomware that has been observed for sale on dark-net forums and used by multiple threat actors. And I am going to do some analysis form a forensics perspective...

Description Company X has contacted you to perform forensics work on a recent incident that occurred. One of their employees had received an e-mail from a co-worker that pointed to a PDF file. Upon opening, the employee did not notice anything; however, they recently had unusual activity in their bank account. The initial theory is that a user received an e-mail, containing an URL leading to a forged PDF document....