Analyse the first task (Exercise A). To do this, evaluate the communication with the server. How is the download started? What are the differences in the tracks compared to normal downloads?
The file of the second task (Exercise B) uses a special signature. What is it about?
Then go through the next trainings. Which method is used to obfuscate the downloads?
Instead of a TXT file an EXE file with the EICAR test signature is now offered for download.
The EICAR test file is a test pattern developed by the European Institute for Computer Antivirus Research and the Computer AntiVirus Research Organization to test the function of antivirus programs.