└─$ ./volatility_2.6_lin64_standalone -f /home/djo/ch2.dmp imageinfo                         
Volatility Foundation Volatility Framework 2.6
INFO    : volatility.debug    : Determining profile based on KDBG search...
          Suggested Profile(s) : Win7SP1x86_23418, Win7SP0x86, Win7SP1x86
                     AS Layer1 : IA32PagedMemoryPae (Kernel AS)
                     AS Layer2 : FileAddressSpace (/home/djo/ch2.dmp)
                      PAE type : PAE
                           DTB : 0x185000L
                          KDBG : 0x82929be8L
          Number of Processors : 1
     Image Type (Service Pack) : 0
                KPCR for CPU 0 : 0x8292ac00L
             KUSER_SHARED_DATA : 0xffdf0000L
           Image date and time : 2013-01-12 16:59:18 UTC+0000
     Image local date and time : 2013-01-12 17:59:18 +0100

https://www.aldeid.com/wiki/Volatility/Retrieve-hostname

└─$ ./volatility_2.6_lin64_standalone -f /home/djo/ch2.dmp --profile=Win7SP1x86_23418 printkey -o 0x8b21c008 -K 'ControlSet001\Control\ComputerName\ComputerName'
Volatility Foundation Volatility Framework 2.6
Legend: (S) = Stable   (V) = Volatile

----------------------------
Registry: \REGISTRY\MACHINE\SYSTEM
Key name: ComputerName (S)
Last updated: 2013-01-12 00:58:30 UTC+0000

Subkeys:

Values:
REG_SZ                        : (S) mnmsrvc
REG_SZ        ComputerName    : (S) WIN-ET*******FP