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Breach Investigation

wifi-security-forensics-basics | Level: Intermediate  | Total Lab Runs: 0 | Premium Lab

Lab Scoreboard

Lab Walkthrough Video:


You are the star investigator at ABC99 Inc. Your firm just received a crisis call from a small but famous construction firm. You rush to their office. The IT administrator, Sam alleges that someone broke into their WiFi network and did some malicious activity. As there are many important machines on the network like file servers, accounts, employee laptops and central billing/CMS, Sam don’t want to take any chances and wants you to investigate a possible breach. Sam tells you that their UTM (Unified Threat Management) or NIDS/NIPS was down for maintenance but their SOHO WiFi monitor (Intrusion Prevention/Detection was turned off) was on and has logged the wireless traffic. This traffic is available as a PCAP file. 


The following employees were present in the office when the supposed incident happened.

S.No.

Name of employee

Designation

Device

1

Mr. John Ruther

CEO

c0:ee:fb:3b:a4:69

2

Miss Bertha

Secretary

00:eb:bc:4e:b8:12

3

Mr. Sam

IT admin

5c:51:88:31:a0:3b

4

Ms. Betty

Manager

02:8e:e4:d0:55:aa



Relevant information

The company uses a WiFi network which uses the credentials below:

  • WiFi network name: Ruther_SSID
  • BSSID: e8:de:27:16:70:c9
  • Security: WPA2-PSK
  • Secret Pass Phrase: RutherPWD
Questions


  1. What is the MAC address of the suspect/attacker?
  2. What did the attacker do on the network?
  3. What are the MAC and IP address of the victim machine?
  4. Whose machine is it in (3)?

Packets don't lie. All the answers are in the PCAP.  

Hints


  1. Look for foreign (unauthorized) client MAC address
  2. Focus on commonly used protocols. Remember all the juicy stuff is within the WiFi encrypted packets!


Verify:
1. What is the MAC address of the suspect?
 
2. What is the IP address of the affected machine?
 


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