2024-09-04 - TRAFFIC ANALYSIS EXERCISE: BIG FISH IN A LITTLE POND

ASSOCIATED FILES:

• Zip archive of the pcap:  2024-09-04-traffic-analysis-exercise.pcap.zip   1.7 MB (1,697,386 bytes)
• Zip archive of the alerts:  2024-09-04-traffic-analysis-exercise-alerts.zip   453.9 kB (452,950 bytes)

NOTES:

• Zip files are password-protected.  Of note, this site has a new password scheme.  For the password, see the "about" page of this website.

 

BACKGROUND

Reviewing the alerts in your network environment, you find indicators that a host within your environment has been infected with malware..

 

SCENARIO

LAN segment details:

• LAN segment range:  172.17.0[.]0/24 (172.17.0[.]0 through 172.17.0[.]255)
• Domain:  bepositive[.]com
• Active Directory (AD) domain controller:  172.17.0[.]17 - WIN-CTL9XBQ9Y19
• AD environment name:  BEPOSITIVE
• LAN segment gateway:  172.17.0[.]1
• LAN segment broadcast address:  172.17.0[.]255

 

TASK

• Write an incident report based on malicious network activity from the pcap and from the alerts.

• The incident report should contains 3 sections:

• Executive Summary: State in simple, direct terms what happened (when, who, what).
• Victim Details: Details of the victim (hostname, IP address, MAC address, Windows user account name).
• Indicators of Compromise (IOCs): IP addresses, domains and URLs associated with the activity.  SHA256 hashes if any malware binaries can be extracted from the pcap.

 

ANSWERS

• Click here for the answers.

 

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