PowerShell Script Challenge

I completed a PowerShell script challenge on LetsDefend !

Here are some key takeaways from this insightful experience:

? Analyzed a malicious PowerShell script and learned about code obfuscation techniques.

? Used the CyberChef tool to decode a Base64-encoded script.

? Discovered how PowerShell can run in hidden mode with the -W Hidden parameter to avoid detection.

? Learned about the -NonI parameter to prevent user interaction.

? Identified how the script communicates with external websites and disguises itself by spoofing the User-Agent string.

? Observed the use of proxy credentials to authenticate and bypass network restrictions.

? Identified the malicious URL the script connects to.

#informationsecurity #riskmanagement #cybersecurity #technology

https://medium.com/@bikashjhatech/powershell-script-challenge-letsdefend-walkthrough-3b06ece84d2d


Question 1


Question 1 Parameter


Question 2


Question 2 Parameter


Question 3


Question 3 Parameter


CyberChef Decoded Script


CyberChef Decoded Script - Null Bytes Removed


Question 4


Website Interaction - CyberChef


Question 5



User-Agent : CyberChef


Question 6



Proxy - CyberChef



Question 7


URL - CyberChef




Peter E.

Helping SMEs automate and scale their operations with seamless tools, while sharing my journey in system automation and entrepreneurship

3 个月

The level of detail in this challenge is impressive. PowerShell’s versatility and ability to bypass detection make it a serious concern for cybersecurity. ??

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