atomic-red-team/atomics/T1046/T1046.md

T1046 - Network Service Scanning

Description from ATT&CK

Adversaries may attempt to get a listing of services running on remote hosts, including those that may be vulnerable to remote software exploitation. Methods to acquire this information include port scans and vulnerability scans using tools that are brought onto a system.

Within cloud environments, adversaries may attempt to discover services running on other cloud hosts or cloud services enabled within the environment. Additionally, if the cloud environment is connected to a on-premises environment, adversaries may be able to identify services running on non-cloud systems.

Atomic Tests

• Atomic Test #1 - Port Scan

• Atomic Test #2 - Port Scan Nmap

Atomic Test #1 - Port Scan

Scan ports to check for listening ports

Supported Platforms: Linux, macOS

Run it with sh!

for port in {1..65535};
do
  echo >/dev/tcp/192.168.1.1/$port && echo "port $port is open" || echo "port $port is closed" : ;
done

Atomic Test #2 - Port Scan Nmap

Scan ports to check for listening ports with Nmap.

Supported Platforms: Linux, macOS

Inputs

Name	Description	Type	Default Value
network_range	Network Range to Scan.	string	192.168.1.0/24
port	Ports to scan.	string	80
host	Host to scan.	string	192.168.1.1

Run it with sh!

nmap -sS #{network_range} -p #{port}
telnet #{host} #{port}
nc -nv #{host} #{port}