huntress2023

Writeups for Huntress CTF 2023

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✅ MALWARE - RAT

Writeup by: @goproslowyo

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Author: @JohnHammond

I was arguing with a co-worker on whether or not it is “Remote Access Tool” or “Remote Access Trojan”, and he didn’t agree with me, so I sent him this shady file ;) NOTE: Archive password: infected NOTE, this challenge is based off of a real malware sample. We have done our best to “defang” the code, but out of abudance of caution it is strongly encouraged you only analyze this inside of a virtual environment separate from any production devices. Download the file(s) below.

Writeup

Upload to VirusTotal. Get flag string from Memory Pattern URLs or the Decoded text sections.

https://www.virustotal.com/gui/file/7a83115ab46ba6a3c237d78f32bd3386ff4d4d7cd7b06ad731fe8071b2246278/behavior

{"Server": "flag{8b988b859588f2725f0c859104919019}", "Ports": "S1hNZ2tQdFJlRkVIWXhKczRMZEIwRmRQVmg3WGxDNEQ=", "Version": "REMOVED FOR SAFETY", "BDOS": "false"}

flag{8b988b859588f2725f0c859104919019}