How to detect network communication

volatility -f /path/to/memory/dump.001 --profile=<profile> netscan > netscan-results.txt

volatility -f /path/to/memory/dump.001 --profile=<profile> connections > connections-results.txt

volatility -f /path/to/memory/dump.001 --profile=<profile> connscan > connscan-results.txt

volatility -f /path/to/memory/dump.001 --profile=<profile> sockets > sockets-results.txt

volatility -f /path/to/memory/dump.001 --profile=<profile> sockscan > sockscan-results.txt

These will work depending on what OS the image is from. Try them all and review all the output.