Cyberdefenders – Reveal Blue Team Lab writeup

Instructions:

  • Uncompress the lab (pass: cyberdefenders.org)

Scenario:

As a cybersecurity analyst for a leading financial institution, an alert from your SIEM solution has flagged unusual activity on an internal workstation. Given the sensitive financial data at risk, immediate action is required to prevent potential breaches.

Your task is to delve into the provided memory dump from the compromised system. You need to identify basic Indicators of Compromise (IOCs) and determine the extent of the intrusion. Investigate the malicious commands or files executed in the environment, and report your findings in detail to aid in remediation and enhance future defenses.

Tools:

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Cyberdefenders – DetectLog4j writeup

Scenario

For the last week, log4shell vulnerability has been gaining much attention not for its ability to execute arbitrary commands on the vulnerable system but for the wide range of products that depend on the log4j library. Many of them are not known till now. We created a challenge to test your ability to detect, analyze, mitigate and patch products vulnerable to log4shell.

Tools:

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Cyberdefenders – MalDoc101 writeup

It is common for threat actors to utilize living off the land (LOTL) techniques, such as the execution of PowerShell to further their attacks and transition from macro code. This challenge is intended to show how you can often times perform quick analysis to extract important IOCs. The focus of this exercise is on static techniques for analysis.

Suggested Tools:

  • REMnux Virtual Machine (remnux.org)
  • Terminal/Command prompt w/ Python installed
  • Oledump
  • Text editor

En primer lugar vamos a instalar el software necesario para realizar el reto

Descargamos OLEDUMP

mkdir /opt/oledump
cd /opt/oledump
wget http://didierstevens.com/files/software/oledump_V0_0_60.zip
unzip oledump_V0_0_60.zip

Instalamos oletools

pip install -U oletools
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Cyberdefenders – DeepDive writeup

En esta entrada nuevamente vamos a resolver un reto de Cyberdefenders. Vamos concretamente DeepDive en la cual vamos a tener que realizar mediante Volatility un análisis forense.

Dado que mis conocimientos de Volatility y análisis forense es bajo me a parecido un reto muy difícil la cual me a ayudado a saber mas sobre el funcionamiento de la memoria.

Scenario

You have given a memory image for a compromised machine. Analyze the image and figure out attack details.

Tools

Resources

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