Honeypot attack session (period 2021_2022), commands issued:
enable
system
shell
sh
cat /proc/mounts; /bin/busybox PCPCU
cd /dev/shm; cat .s || cp /bin/echo .s; /bin/busybox PCPCU
tftp; wget; /bin/busybox PCPCU
dd bs=52 count=1 if=.s || cat .s || while read i; do echo $i; done < .s
/bin/busybox PCPCU
rm .s; exit

MITRE ATT&CK techniques observed:
T1059 Command and Scripting Interpreter
T1082 System Information Discovery
T1059 Command and Scripting Interpreter
T1083 File and Directory Discovery
T1036 Masquerading
T1059 Command and Scripting Interpreter
T1105 Ingress Tool Transfer
T1059 Command and Scripting Interpreter
T1005 Data from Local System
T1059 Command and Scripting Interpreter
T1070 Indicator Removal