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Go Back to Reverse Engineering Malware 101

Section 1: Fundamentals

Enviroment Setup

In this section you will be setting up a safe virtual malware analysis environment. The virtual machine (VM) that you will be running the malware on should not have internet access nor network share access to the host system. This VM will be designated as the Victim VM. On the other hand, the Sniffer VM will have a passive role in serving and monitoring the internet traffic of the Victim VM. This connection remains on a closed network within virtualbox.

Installing VirtualBox

For windows and osx, follow the instructions in the install binary.

Windows	Mac OSX	Linux

Download Victim and Sniffer VMs

Unzip the files below and open the .ovf file with VirtualBox

Victim VM

• OS: Windows 7 Service Pack 1
• Architecture: Intel 32bit
• Username: victim
• Password: re1012017
• IP Address: 192.168.0.2
• Gateway: 192.168.0.1

Sniffer VM

• OS: Ubuntu 16.04.2 LTS Desktop
• Architecture: Intel 64bit
• Username: sniffer
• password re1012017
• IP Address: 192.168.0.1
• Gateway: 192.168.0.1

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Post Install Instructions

1. Install VirtualBox CD on both VMs: Devices->Insert Guest Additions CD Image

• If it doesn't auto appear, navigate to the CD Drive to install
• Follow install directions from the Guest Additions Dialog
• Note: it will require install privileges so insert passwords for each VM

2. Victim VM: Devices->Drag and Drop->Bidrectional
3. Victim VM: Devices->Shared Clipboard->Bidirectional
4. Both VMs: Devices->Network->Network Settings

• Select Attached to Internal Network
• Name should mirror both VMs. Default is intnet

5. Run/Play both VMs to verify network connectivity
6. Sniffer VM: Ensure inetsim is running

• Open terminal and run: ps -ef | grep inetsim
• If no output, run: /etc/init.d/inetsim start
• Run the ps command again to confirm it's running.
• Expected output:

7. Victim VM: test connection to Sniffer VM

• In the search bar, type cmd.exe to open terminal
• Run command: ping 192.168.0.1
• Expected output:

6. Sniffer VM: Devices->Shared Folders->Shared Folders Settings

• On your Host, create a folder called sniffershare
• In virtual box select Add New Shared Folder icon and navigate to the folder you just created (sniffershare)
• In Sniffer VM, open the terminal and run command:mkdir ~/host; sudo mount -t vboxsf -o uid=$UID,gid=$(id -g) sniffershare ~/host

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