Advent Of Cyber 3 - Day 20

Posted on Dec 20, 2021
tl;dr: File analysis

Today a couple of tools like file , strings and md5sum were used to analyze files and their behaviour, combined with virustotal

output after running strings on testfile : X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*

running file on testfile : EICAR virus test files

Calculate file hash with md5 and search for it on virustotal, when did it first appear in the wild ? : 2005-10-17 22:03:48

What is the assigned classification from Microsoft ? : Virus:DOS/EICAR_Test_File

what are the two first names of the EICAR file ? : ducklin.htm or ducklin-html.htm

what is the maximum number of characters that can be in the file ? : 128