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DFhier

Notes on DFIR tools.

Startup

docker run --rm -it -u remnux remnux/remnux-distro:focal bash
docker run --rm -it -u remnux -v $PWD:/home/remnux/files remnux/remnux-distro bash

EnCase

ewfmount FILE.EO1 /mount # mount image
mmls /mount #find offset OR fdisk -l ewf/ewf1 
sudo mount -o ro,loop,show_sys_files,stream_interface=windows,offset=$OFFSET_FROM_MMLS*sector_size /mount /mnt

Shadow Copies

vshadowinfo /mnt/ewf_mount/ewf1
vshadowmount /mnt/ewf_mount/ewf1 /vss
for i in vss*; do mount -o ro,loop,show_sys_files,streams_interfaces=windows $i /mnt/shadow_mount/$i;done

Timeline creation:

fls -r -m C: FILE.E01 > FILE-vss.body
for i in vss*; do fls -r -m C: $i >> FILE-vss.body;done
sort FILE-vss.body | uniq > dedup-FILE-vss.body
mactime -z UTC -y -d -b dedup-FILE-vss.body yyyy-mm-dd..yyyy-mm-dd > file.csv
# filter out the noise
grep -v -i -f noise_filter.txt file.csv > final.csv

Memory

Vol2

Detect the version:

vol.py imageinfo -f memdump.mem

Basic plugins (vaguely in the order of an investigation):

  • pstree (and -v to see the full filepath)
  • pslist
  • filescan
  • hivelist
  • netscan
  • dumpregistry
  • hashdump
  • evtlogs
  • malprocfind
  • malfind + maldump + clamscan
  • processbl
  • dlllist
  • getsids
  • handles
  • mutantscan
  • hollowfind
  • ldrmodules
  • threadmap

You can provide a baseline image with -B and use it to compare (it will combine processbl, servicebl and driverbl).

Ouput plugin data in a greppable format:

vol.py -f FILE.mem --profile=XYZ netscan --output-file=grep_netscan.txt --output=greptext

Get the memory dump from the hibernating file:

vol.py -f hibernating.sys --profile=PROFILE imagecopy -O hibertnating2raw.raw

Vol3

vol3 -f FILE PLUGIN

Get the process tree:

vol3 -f target.mem windows.pstree.PsTree

Get the netscan:

vol3 -f target.mem windows.netscan.NetScan | tee netscan.out
cat netscan.out | grep "ESTABLISHED"

Find malware:

vol3 -f target.mem windows.malfind.MalFind
vol3 -f target.mem windows.malfind.MalFind --dump

Print content of a key:

vol3 -f target.mem windows.registry.printkey.PrintKey --key "KEY" | tee key.out

Plaso

List parsers:

log2timeline.py --parsers list

WINEVTX parse:

log2timeline.py --parsers="winevtx" --status_view output.dump image.E01
psort.py --output_time_zone 'UTC' -o l2tcsv -w output.csv output.dump

Time filtering:

psort.py -z "UTC" -o l2tcsv file.dump "date > 'YYYY-MM-DD HH:MM:SS' AND date < 'YYYY-MM-DD HH:MM:SS'" -w file-plaso.csv

Psteal quick through EVTX:

psteal.py --source source.evtx -o l2tcsv -w out.csv

Tools

Cheatsheets

Misc

Use python-evtx to transform .evtx to .xml:

for i in *.evtx;do python ../python-evtx/scripts/evtx_dump.py $i > $i.xml; done