Mohamed Noureldeen
3 min readDec 22, 2023

Email analysis challenge in LetsDefend

Link of challenge :
https://app.letsdefend.io/challenge/email-analysis

In this article, we’ll be looking at the Email Analysis challenge from LETSDEFEND to determine whether it was a phishing attempt or not. Click Phishing Email Challenge-LetsDefend Lab .

https://app.letsdefend.io/challenge/email-analysis

Email Link: [Download](https://letsdefend-images.s3.us-east-2.amazonaws.com/Challenge/Email-Analysis/BusinessEmail.zip)
Password: infected

Attachment: [Download](https://letsdefend-images.s3.us-east-2.amazonaws.com/Challenge/Email-Analysis/united+scientific+equipent.zip)
Password: infected

NB: It is highly recommended to open the files in a virtual machine because they are malicious.

Lets go :

ok we got email file and attachment file here
which called : BusinessEmail.eml & united scientific equipent.exe

lets go to solve questions :
we open email file open with “Mousepad”

Q1: What is the sending email address?
Answer : yanting@united.com.sg

Q2: What is the email address of the recipient?
Answer : admin@malware-traffic-analysis.net

Q3: What is the subject line of the email?
Answer : united scientific equipment

Q4: What date was the Email sent? Date format: MM/DD/YYYY?
Answer : 02/08/2021

Q5: What is the originating IP?

Answer : 71.19.248.52

Q6: What country is the ip address from?
I used online tools to get it : Iplookup or AbuseIPDB

Answer : Canada

Q7: What is the name of the attachment when you unzip it? (with extension)

Answer : united scientific equipent.exe

Q8 : What is the sha256 hash of the File?

Answer : 9909753bfb0ac8ab165bab3555233d03b01a9274a92e57c022f87ccbe51ca415

Q9 : Is the email attachment malicious? Yes/No
we can get md5 sum hash or sha256 of attachment file and search by it in VirusTotal or Hybrid-analysis

Answer : Yes

All the best!

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